Air Conditioner User Manual

ManualsBrandsSanyo ManualsCar SpeakersKH3642 / CH3642

85464849182000 REFERENCE NO. SM830082

FILE NO.

TECHNICAL DATA

SERVICE MANUAL

Section

XH2442 / CH2442

XH3642 / CH3642

XH4242 / CH4242

TH2442 / CH2442

TH3642 / CH3642

TH4242 / CH4242

KH2442 / CH2442

KH3642 / CH3642

UH2442 / CH2442

UH3642 / CH3642

SPLIT SYSTEM AIR CONDITIONER

OUTDOOR MODEL No. PRODUCT CODE No.

CH2442 854 017 21

CH3642 854 017 22

CH4242 854 017 23

INDOOR MODEL No. PRODUCT CODE No.

XH2442 854 017 11

XH3642 854 017 12

XH4242 854 017 13

TH2442 854 017 14

TH3642 854 017 15

TH4242 854 017 16

KH2442 854 017 07

KH3642 854 017 08

UH2442 854 017 19

UH3642 854 017 20

XH2442 XH3642

XH4242

CH3642

CH4242

CH2442

UH2442

TH2442

TH3642

TH4242

KH2442

KH3642

Indoor Unit Outdoor Unit

UH3642

Summary of content (202 pages)

PAGE 1
TECHNICAL DATA & SERVICE MANUAL FILE NO. XH2442 / CH2442 XH3642 / CH3642 XH4242 / CH4242 KH2442 / CH2442 KH3642 / CH3642 TH2442 / CH2442 TH3642 / CH3642 TH4242 / CH4242 UH2442 / CH2442 UH3642 / CH3642 SPLIT SYSTEM AIR CONDITIONER Section INDOOR MODEL No. PRODUCT CODE No. OUTDOOR MODEL No. PRODUCT CODE No.
PAGE 2
Important Please Read Before Starting When Installing …………………………………………………………………… This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. …In a Room Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.
PAGE 3
WHO SHOULD USE THIS MANUAL This service manual is made to assist the service technician apply his knowledge and training to this model air conditioner. This manual is written both for experienced service persons and those who are new to air conditioning service. To help those with less experience or who are new to this kind of unit we have included more explanations of basic procedures in simple language than is usual in some service manuals.
PAGE 4
2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 Overload Protection (Heating) .................................................................. II - 9 Discharge Temperature Control (Cooling and Heating) ........................... II - 10 Auto. Mode for Automatic Heating/Cooling Switching .............................. II - 11 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) .................... II - 13 4-Way Valve, Solenoid Control ............................................................
PAGE 5
1. Specifications 1. SPECIFICATIONS 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 1-13 Unit Specifications ................................................................................. I - 2 4-Way Air Discharge Semi-concealed Type ........................................... I - 2 Ceiling Mounted Type .............................................................................. I - 5 Concealed Duct Type ..............................................................................
PAGE 6
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit XH2442 Outdoor Unit CH2442 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 24,000 23,400 Pints / h 8.6 8.4 25,000 16,400 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 24,300 15,800 — 710 / 530 / 450 BTU / Wh 10.0 10.2 Voltage rating VAC 230 208 Available voltage range VAC (7.0) (7.
PAGE 7
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit XH3642 Outdoor Unit CH3642 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 34,500 33,500 Pints / h 10.5 10.6 37,500 25,000 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 36,500 23,500 — 1,050 / 840 / 720 BTU / Wh 10.7 11.0 Voltage rating VAC 230 208 Available voltage range VAC (7.0) (7.
PAGE 8
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit XH4242 Outdoor Unit CH4242 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 42,000 40,000 Pints / h 14.4 14.0 44,000 28,000 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 42,000 26,000 — 1,050 / 840 / 720 BTU / Wh 10.4 10.4 Voltage rating VAC 230 208 Available voltage range VAC (7.0) (7.
PAGE 9
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit TH2442 Outdoor Unit CH2442 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 22,400 21,600 Pints / h 8.0 7.9 25,400 15,700 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 25,000 15,000 — 550 / 490 / 460 BTU / Wh 10.0 10.0 Voltage rating VAC 230 208 Available voltage range VAC (7.0) (7.
PAGE 10
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit TH3642 Outdoor Unit CH3642 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 34,000 33,000 Pints / h 10.7 10.8 40,000 25,000 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 39,000 24,000 — 1,100 / 930 / 750 BTU / Wh 10.4 10.7 Voltage rating VAC 230 208 Available voltage range VAC (7.3) (7.
PAGE 11
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit TH4242 Outdoor Unit CH4242 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 42,000 40,000 Pints / h 14.8 14.3 44,000 28,000 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 42,000 26,000 — 1,100 / 930 / 750 BTU / Wh 10.0 10.4 Voltage rating VAC 230 208 Available voltage range VAC (7.0) (7.
PAGE 12
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit UH2442 Outdoor Unit CH2442 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 24,000 23,400 Pints / h 8.4 7.7 27,000 16,200 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V External Static Pressure cu.ft. / min. — 670 / 530 / 460 in.Aq (Pa) S.E.E.R. (H.S.P.F.) 26,500 15,500 0.2 (49) : at shipment / 0.4 (100) : using jumper cable BTU / Wh 10.0 10.
PAGE 13
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit UH3642 Outdoor Unit CH3642 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 34,500 33,000 Pints / h 10.0 9.9 37,500 25,000 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V External Static Pressure cu.ft. / min. — 1,060 / 920 / 750 in.Aq (Pa) S.E.E.R. (H.S.P.F.) 36,500 24,000 0.24 (59) : at shipment / 0.38 (94) : using jumper cable BTU / Wh 10.3 10.
PAGE 14
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit KH2442 Outdoor Unit CH2442 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 22,000 21,000 Pints / h 7.1 6.8 25,000 16,000 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 24,300 15,300 — 540 / 460 / 380 BTU / Wh 10.0 10.0 Voltage rating VAC 230 208 Available voltage range VAC (7.0) (7.
PAGE 15
1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit KH3642 Outdoor Unit CH3642 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity* Heating BTU / h 33,000 32,000 Pints / h 10.6 10.6 40,000 25,000 (17°F)** Moisture removal (High) Air circulation (H / M / L) 230 V S.E.E.R. (H.S.P.F.) cu.ft. / min. 39,000 24,000 — 830 / 710 / 590 BTU / Wh 10.3 10.5 Voltage rating VAC 230 208 Available voltage range VAC (7.6) (7.
PAGE 16
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. XH2442 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller (Option) RCS - SH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 VAC, 3 A in. (mm) Turbo (1…17-7/16 (443)) Fan motor Model SFG6X - 41D6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m.
PAGE 17
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. XH3642 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller (Option) RCS - SH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 VAC, 3 A in. (mm) Turbo (1…17-7/16 (443)) Fan motor Model SFG6X - 81A6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m.
PAGE 18
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. XH4242 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller (Option) RCS - SH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 VAC, 3 A in. (mm) Turbo (1…17-7/16 (443)) Fan motor Model SFG6X - 81A6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m.
PAGE 19
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. TH2442 Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) RCS - SH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 V, 3 A in. (mm) Centrifugal (4 ... 5-1/8(130)) Fan motor Model SR4X - 51A6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m.
PAGE 20
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. TH3642 Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) RCS - SH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 V, 3 A in. (mm) Centrifugal (4 ... 5-29/32(150)) Fan motor Model KFG4X - 101C6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m. (230 V, High) rpm Nominal output W Coil resistance Ω (Ambient temperature 68 °F) 1 4 ...
PAGE 21
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. TH4242 Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) RCS - SH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 V, 3 A in. (mm) Centrifugal (4 ... 5-29/32(150)) Fan motor Model KFG4X - 101C6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m. (230 V, High) rpm Nominal output W Coil resistance Ω (Ambient temperature 68 °F) 4 ...
PAGE 22
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. UH2442 Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) RCS - BH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 V, 3 A in. (mm) Centrifugal (4 ... 5-29/32(150)) Fan motor Model KFG4X - 71B6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m. (230 V, High) rpm Nominal output W Coil resistance Ω (Ambient temperature 68 °F) 1 4 ...
PAGE 23
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. UH3642 Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) RCS - BH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse Fan (Number … diameter) 250 V, 3 A in. (mm) Centrifugal (4 ... 5-29/32(150)) Fan motor Model KFG4X - 141A6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m. (230 V, High) rpm Nominal output W Coil resistance Ω (Ambient temperature 68 °F) 4 ...
PAGE 24
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. KH2442 Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) RCS - BH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse 250 V, 3 A Fan Cross-flow Number ... Dia. and length in. (mm) 1 ... O.D. 4-1/3 (110), L39 (990) Fan motor Model UF4Q - 31A6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m.
PAGE 25
1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. KH3642 Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) RCS - BH80UA, WL Controller P. C. B Ass'y CR - TH2442 Control circuit fuse 250 V, 3 A Switch Ass'y SW - KHS2432 Fan Cross-flow Number ... Dia. and length in. (mm) 1 ... O.D. 4-13/18 (120), L46 (1,170) Fan motor Model SFG4Q - 41B6P Source 230 - 208 V / 1 phase / 60 Hz No. of pole … r.p.m.
PAGE 26
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. CH2442 Source 230 - 208 VAC / 1 phase / 60 Hz Controller P.C.B. Ass'y CR - CH2442 (Microprocessor) Control circuit fuse 250 VAC, 3 A Compressor Rotary (Hermetic) Model C - 2R160H6T Source 230 - 208 VAC / 1 phase / 60 Hz Nominal output W 1,700 Compressor oil cc 800 Coil resistance (Ambient temperature 77 °F) Ω C – R : 0.885 , C – S : 1.
PAGE 27
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. CH3642 Source 230 - 208 VAC / 1 phase / 60 Hz Controller P.C.B. Ass'y CR - CH2442 (Microprocessor) Control circuit fuse 250 V, 3 A Compressor Rotary (Hermetic) Model C - R221H6R Source 230 - 208 VAC / 1 phase / 60 Hz Nominal output W 2,200 Compressor oil cc 1,500 Coil resistance (Ambient temperature 77 °F) Ω C – R : 0.549 , C – S : 1.
PAGE 28
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. CH4242 Source 230 - 208 V / 1 phase / 60 Hz Compressor Scroll (Hermetic) Model ZR47KC - PFV Source 230 - 208 V / 1 phase / 60 Hz Nominal output W 4,270 Compressor oil cc 1,240 Coil resistance (Ambient temperature 77 °F) Ω R - W : 0.475 , S - W : 1.850 Safety device Internal type Overload relay models Operating temperature — Open °F 320 ± Close °F 189 ± 20 A — VAC, µF 400 V, 50 µF (kg) R22 : 9.
PAGE 29
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. XH2442 Power Transformer Rated ATR – II224A Primary 220 VAC, 60 Hz Secondary BRN - BRN : 14 V, 0.45 A, RED - RED : 14 V, 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN RED - RED ORG - ORG : : 1.37 3.16 PBC - 41E - S14 kΩ 14 °F : 23.7 23 °F : 18.8 32 °F : 15.0 Thermistor (Room sensor) : TH1 Coil resistance 61.0 , 0.
PAGE 30
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. XH3642 Power Transformer Rated ATR – IIK224A Primary 220 VAC, 60 Hz Secondary BRN - BRN : 14 V, 0.45 A, RED - RED : 14 V, 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN 1 14 °F : 23.7 23 °F : 18.8 32 °F : 15.0 : : 1.37 3.16 , , , 41 °F : 12.1 50 °F : 9.7 59 °F : 8.0 KTEC - 35 - S6 kΩ 32 °F 41 °F 50 °F 68 °F 86 °F : : : : : 16.5 12.8 10.
PAGE 31
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. XH4242 Power Transformer Rated ATR – IIK224A Primary 220 VAC, 60 Hz Secondary BRN - BRN : 14 V, 0.45 A, RED - RED : 14 V, 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN RED - RED ORG - ORG : : 1.37 3.16 PBC - 41E - S14 kΩ 14 °F : 23.7 23 °F : 18.8 32 °F : 15.0 Thermistor (Room sensor) : TH1 Coil resistance 61.0 , 0.
PAGE 32
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. TH2442 Power Transformer Rated ATR – IIK244B Primary AC 220 V, 60 Hz Secondary BRN - BRN : 14 V / 0.55 A, RED - RED : 14 V / 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN Coil resistance RED - RED ORG - ORG : : 0.89 2.05 PBC - 41E - S14 kΩ 14 °F 23 °F 32 °F 41 °F 50 °F : : : : : 23.7 18.8 15.0 12.1 9.
PAGE 33
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. TH3642 Power Transformer Rated ATR – IIK244B Primary AC 220 V, 60 Hz Secondary BRN - BRN : 14 V / 0.55 A, RED - RED : 14 V / 0.55 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN RED - RED ORG - ORG : : 0.89 2.05 PBC - 41E - S14 kΩ 14 °F 23 °F 32 °F 41 °F 50 °F : : : : : 23.7 18.8 15.0 12.1 9.
PAGE 34
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. TH4242 Power Transformer Rated ATR – IIK244B Primary AC 220 V, 60 Hz Secondary BRN - BRN : 14 V / 0.55 A, RED - RED : 14 V / 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN Coil resistance RED - RED ORG - ORG : : 0.89 2.05 PBC - 41E - S14 kΩ 14 °F 23 °F 32 °F 41 °F 50 °F : : : : : 23.7 18.8 15.0 12.1 9.
PAGE 35
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. UH2442 Power Transformer Rated ATR – IIK244B Primary AC 220 V, 60 Hz Secondary BRN - BRN : 14 V / 0.55 A, RED - RED : 14 V / 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN RED - RED ORG - ORG : : 0.89 2.05 PBC - 41E - S36 kΩ 14 °F 23 °F 32 °F 41 °F 50 °F : : : : : 23.7 18.8 15.0 12.1 9.7 Thermistor (Room or coil sensor) Coil resistance 48.
PAGE 36
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. UH3642 Power Transformer Rated ATR – IIK244B Primary AC 220 V, 60 Hz Secondary BRN - BRN : 14 V / 0.55 A, RED - RED : 14 V / 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN Coil resistance RED - RED ORG - ORG : : 0.89 2.05 PBC - 41E - S36 kΩ 14 °F 23 °F 32 °F 41 °F 50 °F : : : : : 23.7 18.8 15.0 12.1 9.
PAGE 37
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. KH2442 Power Transformer Rated ATR – IIK244B Primary AC 220 V, 60 Hz Secondary BRN - BRN : 14 V / 0.55 A, RED - RED : 14 V / 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN RED - RED ORG - ORG : : 0.89 2.05 PBC - 41E - S4 kΩ 14 °F 23 °F 32 °F 41 °F 50 °F : : : : : 23.7 18.8 15.0 12.1 9.7 Thermistor (Room or coil sensor) Coil resistance 48.
PAGE 38
1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No. KH3642 Power Transformer Rated ATR – II244B Primary AC 220 V, 60 Hz Secondary BRN - BRN : 14 V / 0.55 A, RED - RED : 14 V / 0.3 A Capacity — Coil resistance (Ambient temprature 77 °F) Ω Thermistor cut off temperature °F WHT - WHT BRN - BRN Coil resistance RED - RED ORG - ORG : : 0.89 2.05 PBC - 41E - S4 kΩ 14 °F 23 °F 32 °F 41 °F 50 °F : : : : : 23.7 18.8 15.0 12.1 9.
PAGE 39
1. Specifications 1-3 Other Component Specifications (B) Outdoor Unit MODEL No. CH2442 Compressor Motor Magnetic Contactor FC - 1UL Coil rated Coil resistance (at 77 °F) 240 VAC, 60 Hz Ω 580 ± 15 % Contact rated (Main) 230 VAC, 20 A Contact rated (Auxiliary) 230 VAC, 3 A Power Relay HH62S Coil rated Coil resistance (at 77 °F) 240 VAC, 60 Hz kΩ 17.2 Contact rated 220 VAC, 5 A Power Transformer ATR - I65C Rated Primary 220 VAC, 60 Hz Secondary 14 V, 0.
PAGE 40
1. Specifications 1-3 Other Component Specifications (B) Outdoor Unit MODEL No. CH3642 Compressor Motor Magnetic Contactor FC - 1SUL Coil rated Coil resistance (at 68 °F) 240 VAC, 60 Hz Ω 588 ± 10 % Contact rated (Main) 240 VAC, 26 A Contact rated (Auxiliary) 240 VAC, 3 A Power Relay HH62S Coil rated Coil resistance (at 77 °F) 240 VAC, 60 Hz kΩ 17.2 Contact rated 220 VAC, 5 A Power Transformer ATR - I65C Rated Primary 220 VAC, 60 Hz Secondary 1 14 V, 0.4 A Capacity 5.
PAGE 41
1. Specifications 1-3 Other Component Specifications (B) Outdoor Unit MODEL No. CH4242 Compressor Motor Magnetic Contactor FC - 2SUL Coil rated Coil resistance (at 68 °F) 240 VAC, 60 Hz Ω 350 ± 10 % Contact rated (Main) 240 VAC, 35 A Contact rated (Auxiliary) 240 VAC, 3 A Power Relay HH62S Coil rated Coil resistance (at 77 °F) 240 VAC, 60 Hz kΩ 17.2 Contact rated 220 VAC, 5 A Power Transformer ATR - I65C Rated Primary 220 VAC, 60 Hz Secondary 14 V, 0.
PAGE 42
1. Specifications 1-4 Dimensional data Indoor unit : 4-Way Air Discharge Semi-concealed Type 24 Type 10-9/32 8-11/16 4-7/8 Min. 2-15/32 3 11-1/2 9-1/8 X-view 13-11/32 3-15/16 Min.
PAGE 43
1. Specifications 1-4 Dimensional data Indoor unit : 4-Way Air Discharge Semi-concealed Type 36, 42 Type 11-15/32 9-19/32 13-11/32 3-15/16 4-7/8 Min. 2-15/32 X-view Min.
PAGE 44
1.
PAGE 45
1.
PAGE 46
1.
PAGE 47
1.
PAGE 48
1. Specifications 1-4 Dimensional data Indoor unit : Concealed Duct Type 13/32 Thickness more than T1/16 inch 8-9/32 31/32 2-ø1/8 (Hole) ■ Flange for the air intake duct (Field supply) : For Concealed Duct Type 31/32 12-1/32 31/32 10-1/4 (O.D.) 29/32 23/32 F 1-7/32 1/4 (Hole) 13/32 G C-ø1/8 (Hole) D 1 E A H B (O.D.
PAGE 49
1.
PAGE 50
1.
PAGE 51
1. Specifications 1-4 Dimensional Data (B) Outdoor Unit: CH2442 4-21/64 15-3/4 13-3/8 14-31/32 1-31/32 13/32 26 1-31/32 1-3/16 6-11/16 37 12-1/16 11 28-15/16 1 2 Dimension : inch Hole for anchor bolt (4-ø1/2) Refrigerant tube joint (narrow tube) Flare connection 1/4 in (6.35 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.
PAGE 52
1. Specifications 1-4 Dimensional Data (B) Outdoor Unit: CH3642, CH4242 4-21/64 15-3/4 13-3/8 14-31/32 1-31/32 13/32 26 1-31/32 1-3/16 6-11/16 37 23-29/32 2 22-27/32 48-5/8 1 Dimension : inch 3 Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.
PAGE 53
1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Unit: CH2442 Indoor Unit: 24 Type Compressor Accumulator Accumulator Gas line service valve O.D. 3/4" (19.05mm) Gas line nipple HP High pressure switch 4-way valve EC Heat exchanger EC P Heat exchanger Distributor P Strainer Electronic ref.control valve Distributor Liquid line service valve M O.D. 1/4" (6.
PAGE 54
1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Unit: CH4242 Indoor Unit: 42 Type Compressor Accumulator Gas line service valve O.D. 3/4" (19.05mm) Gas line nipple HP High pressure switch Muffler 4-way valve EC Heat exchanger EC P Heat exchanger Distributor P Strainer Electronic ref.control valve Distributor Liquid line service valve 1 M O.D. 3/8" (9.
PAGE 55
1. Specifications 1-7 Cooling Capacity Indoor Unit: XH2442 Outdoor Unit: CH2442 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 56
1. Specifications Indoor Unit: XH2442 Outdoor Unit: CH2442 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 71 (21.7) 3 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 23,400 BTU/h TC CI SHC SHC SHC SHC SHC 75 (23.9) 23,700 1.
PAGE 57
1. Specifications Indoor Unit: XH3642 Outdoor Unit: CH3642 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 58
1. Specifications Indoor Unit: XH3642 Outdoor Unit: CH3642 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 71 (21.7) 3 4 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 59
1. Specifications Indoor Unit: XH4242 Outdoor Unit: CH4242 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 60
1. Specifications Indoor Unit: XH4242 Outdoor Unit: CH4242 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 3 4 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 61
1. Specifications Indoor Unit: TH2442 Outdoor Unit: CH2442 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 62
1. Specifications Indoor Unit: TH2442 Outdoor Unit: CH2442 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 3 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 63
1. Specifications Indoor Unit: TH3642 Outdoor Unit: CH3642 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 64
1. Specifications Indoor Unit: TH3642 Outdoor Unit: CH3642 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 3 4 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 65
1. Specifications Indoor Unit: TH4242 Outdoor Unit: CH4242 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 66
1. Specifications Indoor Unit: TH4242 Outdoor Unit: CH4242 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 3 4 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 67
1. Specifications Indoor Unit: UH2442 Outdoor Unit: CH2442 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 68
1. Specifications Indoor Unit: UH2442 Outdoor Unit: CH2442 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 71 (21.7) 3 4 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 69
1. Specifications Indoor Unit: UH3642 Outdoor Unit: CH3642 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 70
1. Specifications Indoor Unit: UH3642 Outdoor Unit: CH3642 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 3 4 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 71
1. Specifications Indoor Unit: KH2442 Outdoor Unit: CH2442 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 72
1. Specifications Indoor Unit: KH2442 Outdoor Unit: CH2442 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 3 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 73
1. Specifications Indoor Unit: KH3642 Outdoor Unit: CH3642 • 230V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 74
1. Specifications Indoor Unit: KH3642 Outdoor Unit: CH3642 • 208V / 1 phase / 60Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F(°C) WB DB 59 (15.0) 63 (17.2) 1 67 (19.4) 2 71 (21.7) 3 4 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(31.1) 76(24.4) 80(26.7) 84(28.9) 88(31.
PAGE 75
1. Specifications 1-8 Heating Capacity Indoor entering air temperature: 70°F Heating capacity (%) 120 100 80 1 60 10 20 30 40 50 60 Outdoor ambient temp.
PAGE 76
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (1) Operating Current 1 Indoor Unit: XH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V 208V Outdoor fan speed High Low Outdoor fan speed High Low 15 Indoor temp. °F (°C) 13 85 (30) 80 (27) 75 (24) 70 (21) 12 11 10 9 15 8 59 (15) Indoor temp.
PAGE 77
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (1) Operating Current 1 Indoor Unit: XH4242 Outdoor Unit: CH4242 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V 208V 24 24 23 85 (30) 80 (27) 75 (24) 70 (21) 22 21 20 19 18 17 Operating current (A) Operating current (A) 23 59 (15) Indoor temp. °F (°C) Outdoor fan speed High Low Indoor temp.
PAGE 78
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (1) Operating Current 1 Indoor Unit: TH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V 208V Outdoor fan speed High Low Outdoor fan speed High Low 15 13 85 (30) 80 (27) 75 (24) 70 (21) 12 11 10 9 85 (30) 80 (27) 75 (24) 70 (21) 13 12 11 10 9 8 8 59 (15) Indoor temp.
PAGE 79
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (1) Operating Current 1 Indoor Unit: TH4242 Outdoor Unit: CH4242 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V 208V 24 24 23 85 (30) 80 (27) 75 (24) 70 (21) 22 21 20 19 18 17 Operating current (A) Operating current (A) 23 59 (15) Indoor temp. °F (°C) Outdoor fan speed High Low Indoor temp.
PAGE 80
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (1) Operating Current 1 Indoor Unit: UH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V 208V Outdoor fan speed High Low Outdoor fan speed High Low Indoor temp. °F (°C) 85 (30) 80 (27) 75 (24) 70 (21) 1 Operating current (A) 14 13 12 11 10 9 14 8 59 (15) Indoor temp.
PAGE 81
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (1) Operating Current 1 Indoor Unit: KH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V 208V Outdoor fan speed High Low Outdoor fan speed High Low 15 13 85 (30) 80 (27) 75 (24) 70 (21) 12 11 10 9 13 85 (30) 80 (27) 75 (24) 70 (21) 12 11 10 1 9 8 8 59 (15) Indoor temp.
PAGE 82
1. Specifications 1-9 Performance Charts ● Heating Characteristics (1) Operating Current 1 Indoor Unit: XH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 15 Operating current (A) 14 1 13 12 11 10 9 14 13 12 11 10 9 8 8 14 (–10) Indoor temp.
PAGE 83
1. Specifications 1-9 Performance Charts ● Heating Characteristics (1) Operating Current 1 Indoor Unit: XH4242 Outdoor Unit: CH4242 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 25 Operating current (A) 24 23 22 21 20 19 24 23 22 21 20 19 1 18 18 14 (–10) Indoor temp.
PAGE 84
1. Specifications 1-9 Performance Charts ● Heating Characteristics (1) Operating Current 1 Indoor Unit: TH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 15 Operating current (A) 14 1 13 12 11 10 9 14 13 12 11 10 9 8 8 14 (–10) Indoor temp.
PAGE 85
1. Specifications 1-9 Performance Charts ● Heating Characteristics (1) Operating Current 1 Indoor Unit: TH4242 Outdoor Unit: CH4242 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 25 Operating current (A) 24 23 22 21 20 19 18 14 (–10) Indoor temp.
PAGE 86
1. Specifications 1-9 Performance Charts ● Heating Characteristics (1) Operating Current 1 Indoor Unit: UH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 15 Operating current (A) 14 1 13 12 11 10 9 14 8 14 (–10) Indoor temp.
PAGE 87
1. Specifications 1-9 Performance Charts ● Heating Characteristics (1) Operating Current 1 Indoor Unit: KH2442 Outdoor Unit: CH2442 Operating current characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 15 Operating current (A) 14 13 12 11 10 9 14 8 14 (–10) Indoor temp.
PAGE 88
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (2) Operating Pressure 1 Indoor Unit: 24 Type Outdoor Unit: CH2442 • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V / 208V Outdoor fan speed High Low 340 Indoor temp.
PAGE 89
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (2) Operating Pressure 1 Indoor Unit: 36 Type Outdoor Unit: CH3642 • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V / 208V Outdoor fan speed High Low Indoor temp.
PAGE 90
1. Specifications 1-9 Performance Charts ● Cooling Characteristics (2) Operating Pressure 1 Indoor Unit: 42 Type Outdoor Unit: CH4242 • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V / 208V Outdoor fan speed High Low 340 Indoor temp.
PAGE 91
1. Specifications 1-9 Performance Charts ● Heating Characteristics (2) Operating Pressure 1 Indoor Unit: 24 Type Outdoor Unit: CH2442 • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V / 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 340 Discharge pressure (psig) 320 300 280 1 260 240 220 200 180 14 (–10) 23 (–5) 32 (0) 41 (5) 50 (10) 59 (15) 2 68 (20) Outdoor ambient temp.
PAGE 92
1. Specifications 1-9 Performance Charts ● Heating Characteristics (2) Operating Pressure 1 Indoor Unit: 36 Type Outdoor Unit: CH3642 • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V / 208V Indoor temp. °F (°C) 75 (24) 70 (21) 65 (18) 340 1 Discharge pressure (psig) 320 300 280 260 240 220 200 180 2 14 (–10) 23 (–5) 32 (0) 41 (5) 50 (10) 59 (15) 68 (20) Outdoor ambient temp.
PAGE 93
1. Specifications 1-9 Performance Charts ● Heating Characteristics (2) Operating Pressure 1 Indoor Unit: 42 Type Outdoor Unit: CH4242 • High Pressure High pressure characteristics versus outdoor ambient temperature and indoor temperature. (Indoor relative humidity: 50%, Indoor fan speed: High) 230V / 208V Indoor temp.
PAGE 94
1. Specifications 1-10 Noise Criterion Curves ● 4-Way Air Discharge Semi-concealed Type MODEL : XH2442 SOUND LEVEL : HIGH 38 dB(A), NC 31 LOW 31 dB(A), NC 23 CONDITION : Center, Under the unit 4.9 ft. SOURCE : 208 - 230 V, 1 Phase, 60 Hz 1 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
PAGE 95
1. Specifications 1-10 Noise Criterion Curves ● Ceiling Mounted Type MODEL : TH2442 MODEL : TH3642 SOUND LEVEL : HIGH 40 dB(A), NC 34 SOUND LEVEL : HIGH 46 dB(A), NC 39 LOW 36 dB(A), NC 26 LOW 37 dB(A), NC 31 CONDITION : Distance 3.3 ft., Under the unit 3.3 ft. CONDITION : Distance 3.3 ft., Under the unit 3.3 ft.
PAGE 96
1. Specifications 1-10 Noise Criterion Curves ● Concealed Duct Type MODEL : UH3642 SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21 CONDITION : Under the unit 4.9 ft. CONDITION : Under the unit 4.9 ft. SOURCE : 208 - 230 V, 1 Phase, 60 Hz SOURCE : 208 - 230 V, 1 Phase, 60 Hz OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar) SOUND LEVEL : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
PAGE 97
1. Specifications 1-10 Noise Criterion Curves ● Wall Mounted Type MODEL : KH2442 MODEL : KH3642 SOUND LEVEL : HIGH 45 dB(A), NC 38 SOUND LEVEL : HIGH 48 dB(A), NC 41 LOW 40 dB(A), NC 33 LOW 40 dB(A), NC 33 CONDITION : Distance 3.3 ft., Under the unit 3.3 ft. CONDITION : Distance 3.3 ft., Under the unit 3.3 ft.
PAGE 98
1. Specifications 1-10 Noise Criterion Curves ● Outdoor Units MODEL : CH2442 MODEL SOUND LEVEL : 53 dB(A), : CH3642 SOUND LEVEL : 56 dB(A), NC 45 CONDITION : Distance 1m, Height 1m CONDITION : Distance 1m, Height 1m SOURCE : 230 - 208 V, 1 Phase, 60 Hz SOURCE : 230 - 208 V, 1 Phase, 60 Hz 90 90 80 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 APPROXIMATE 20 THRESHOLD OF HEARING FOR CONTINUOUS NOISE 10 63 125 250 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0dB=0.
PAGE 99
1. Specifications 1-11 Increasing the Fan Speed Electrical component box If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure: Jumper cable Fan motor Jumper cable Fan motor socket (At shipment) (Jumper cable installed) 2159_M_I (5) 50 HT HH Place the cable neatly in the box and reinstall the cover plate.
PAGE 100
1. Specifications 1-12 Air throw distance chart ● 4-Way Air Discharge Semi-concealed Type Model: 24 Type HORIZONTAL DISTANCE (ft.) 0 3 7 10 13 17 20 AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.) 0 AXIS AIR VELOCITY 3 7 10 13 2111_X_I 1 Model: 36, 42 Type HORIZONTAL DISTANCE (ft.) 0 3 7 10 13 17 20 0 AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.
PAGE 101
1. Specifications 1-12 Air throw distance chart ● Ceiling Mounted Type Model: 24 Type AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.) 0 HORIZONTAL DISTANCE (ft.) 3 7 17 20 23 26 29 33 AXIS AIR VELOCITY 7 10 13 17 2115_T_I 0 AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.) 13 3 Model: 36 Type HORIZONTAL DISTANCE (ft.) 3 7 10 13 17 20 23 26 29 33 0 3 AXIS AIR VELOCITY 1 7 10 13 17 2116_T_I Model: 42 Type 0 AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.
PAGE 102
1. Specifications 1-12 Air throw distance chart ● Wall Mounted Type MODEL: KHS2442 Horizontal distance (ft.) 5 0 10 15 20 25 30 city Axis air velocity (ft./sec.) Vertical distance (ft.) Axis air velo 45° 5 0° 67.5° 22.5° 10 45° 15 2121_K_S 1 COOLING - - - - - HEATING FAN SPEED HIGH HIGH ROOM AIR TEMP. 80°F 70°F FLAP ANGLE 0°, 22.5°, 45° 54°, 67.5° 2 MODEL: KHS3642 Horizontal distance (ft.) 5 3 4 Axis air velocity (ft./sec.) Vertical distance (ft.
PAGE 103
1. Specifications 1-13 Installation Instructions ● Tubing Length ● Refrigerant tubing between the indoor and outdoor units should be kept as short as possible. Tubing length (L) INDOOR UNIT ● Select and decide the installation location so that the length of the refrigerant tubing will be within the limits given in Table 1-10. Elevation difference (H) OUTDOOR UNIT 0711_M_I Fig. 1-1 Table 1-10 Models Tubing Data CH2442 CH3642, CH4242 Narrow tube in. (mm) 1/4 (6.35) 3/8 (9.52) Wide tube in.
PAGE 104
1. Specifications ■ SELECTING THE INSTALLATION SITE Indoor Unit Ceiling-Mounted Type AVOID: ● areas where leakage of flammable gas may be expected. Ceiling ● places where large amounts of oil mist exist. Wall ● direct sunlight. ● locations near inverter lamps which may affect performance of the unit. Min.10 inch NOTE ● locations near heat sources which may affect performance of the unit. The rear of the indoor unit can be installed flush against the wall.
PAGE 105
1. Specifications Exhaust fan Outdoor Unit Hot air AVOID: Heat source Outdoor unit ● heat sources, exhaust fans, etc. (Fig. 2-1) ● damp, humid or uneven locations. 0591_C_I DO: Fig. 2-1 ● choose a place as cool as possible. ● choose a place that is well ventilated and outside air temperature does not exceed maximum 115°F constantly. Min. 1 inch ● allow enough room around the unit for air intake/ exhaust and possible maintenance. (Fig. 2-2) Min. 1 inch Obstacle above Min. 7 ft. 4 in.
PAGE 106
1. Specifications ■ Air Discharge Chamber for Top Discharge Air discharge Install the air-discharge chamber in the field when: ● it is difficult to keep a space of minimum 2 ft. between the air-discharge outlet and the obstacle. ● the air-discharge outlet is facing the sidewalk and discharge hot air can annoy the passers-by. Refer to Fig. 2-4.
PAGE 107
1. Specifications ■ Precautions When Installing in Heavy Snow Areas (1) (2) (3) (4) ■ The platform should be higher than the maximum. snow depth. (Fig. 2-5) The two anchoring feet of the outdoor unit should be attached to the platform, and the platform should be installed beneath the air-intake side of the outdoor unit. The platform foundation must be solid and the unit must be secured with anchor bolts.
PAGE 108
1. Specifications ■ ELECTRICAL WIRING ● General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. (2) Provide a power outlet to be used exclusively for each unit, and a power supply disconnect and circuit breaker for overcurrent protection should be provided in the exclusive line. (3) To prevent possible hazards from insulation failure, the unit must be grounded.
PAGE 109
1. Specifications ● Wiring System Diagrams (1) Basic wiring diagram for standard control Indoor Unit Outdoor Unit B Inter-unit power wiring Single phase 230/208V Inter-unit control wiring (Low voltage) 1 1 1 1 2 2 G G Ground U1 U1 U2 U2 1 R.C. Address on the PCB: 0 (S2, BLK) (0: Factory shipped state) 0 C L1 L1 L2 L2 G 2 2 2 D Remote controller (Option) *Remote controller wirings are wire joint connection.
PAGE 110
1. Specifications (2) Basic wiring diagram for group control This diagram shows when several units (max. 8) are controlled by a remote controller. In this case, a remote controller can be connected at any indoor unit. Indoor Unit Outdoor Unit B Inter-unit power wiring single phase 230/208V 1 1 2 2 G *1 R.C.
PAGE 111
1. Specifications Electrical characteristics ■ Electrical Data Indoor model: XH2442 / Outdoor model: CH2442 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 0.6 - 0.6 0.9 - 0.9 9.7 - 10.1 11.2 - 11.6 0.12 - 0.11 0.18 - 0.17 2.15 - 2.07 2.45 - 2.35 0.6 - 0.6 0.9 - 0.9 11.1 - 12.0 12.6 - 13.5 0.12 - 0.11 0.18 - 0.17 2.50 - 2.47 2.80 - 2.
PAGE 112
1. Specifications Indoor model: XH3642 / Outdoor model: CH3642 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 0.9 - 0.8 1.8 - 1.8 12.7 - 13.2 15.4 - 15.8 0.20 - 0.16 0.36 - 0.34 2.79 - 2.70 3.35 - 3.20 0.9 - 0.8 1.8 - 1.8 15.4 - 16.7 18.1 - 19.3 0.20 - 0.16 0.36 - 0.34 3.43 - 3.41 3.99 - 3.
PAGE 113
1. Specifications Electrical characteristics ■ Electrical Data Indoor model: XH4242 / Outdoor model: CH4242 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 V 208 V 230 V 208 V 230 V 208 V 230 V 208 V A 1.0 0.9 1.8 1.8 17.8 18.3 20.6 21.0 kW 0.2 0.17 0.36 0.34 3.64 3.58 4.2 4.09 A 1.0 0.9 1.8 1.8 21.0 21.9 23.8 24.6 kW 0.2 0.17 0.36 0.34 4.41 4.33 4.97 4.84 2 2 2 2 131 131 134 133.
PAGE 114
1. Specifications Indoor model: TH2442 / Outdoor model: CH2442 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 0.4 - 0.4 0.9 - 0.9 9.4 - 10.0 10.7 - 11.3 0.08 - 0.07 0.18 - 0.17 2.09 - 2.04 2.35 - 2.28 0.4 - 0.4 0.9 - 0.9 11.0 - 11.7 12.3 - 13.0 0.08 - 0.07 0.18 - 0.17 2.45 - 2.42 2.71 - 2.
PAGE 115
1. Specifications Indoor model: TH3642 / Outdoor model: CH3642 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 0.7 - 0.7 1.8 - 1.8 12.6 - 13.2 15.1 - 15.7 0.16 - 0.14 0.36 - 0.34 2.83 - 2.69 3.35 - 3.17 0.7 - 0.7 1.8 - 1.8 15.4 - 16.8 17.9 - 19.3 0.16 - 0.14 0.36 - 0.34 3.45 - 3.38 3.97 - 3.86 1-1 2-2 95 - 86 97.7 - 88.
PAGE 116
1. Specifications Indoor model: TH4242 / Outdoor model: CH4242 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 V 208 V 230 V 208 V 230 V 208 V 230 V 208 V A 0.8 0.7 1.8 1.8 18.0 18.8 20.6 21.3 kW 0.18 0.15 0.36 0.34 3.76 3.71 4.3 4.2 A 0.8 0.7 1.8 1.8 21.0 22.6 23.6 25.1 kW 0.18 0.15 0.36 0.34 4.49 4.49 5.03 4.98 1 1 2 2 131 131 133.8 133.
PAGE 117
1. Specifications Indoor model: UH2442 / Outdoor model: CH2442 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 0.9 - 0.8 0.9 - 0.9 9.7 - 10.4 11.5 - 12.1 0.18 - 0.16 0.18 - 0.17 2.19 - 2.15 2.55 - 2.48 0.9 - 0.8 0.9 - 0.9 11.1 - 12 12.9 - 13.7 0.18 - 0.16 0.18 - 0.17 2.53 - 2.48 2.89 - 2.81 2-2 1-1 66 - 60 67.9 - 61.
PAGE 118
1. Specifications Indoor model: UH3642 / Outdoor model: CH3642 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 1-1 1.8 - 1.8 12.3 - 13.7 15.1 - 15.7 0.22 - 0.2 0.36 - 0.34 2.77 - 2.63 3.35 - 3.17 1-1 1.8 - 1.8 15.4 - 16.8 18.2 - 19.6 0.22 - 0.2 0.36 - 0.34 3.45 - 3.38 4.03 - 3.
PAGE 119
1. Specifications Indoor model: KH2442 / Outdoor model: CH2442 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 0.4 - 0.4 0.9 - 0.9 9.0 - 9.6 10.3 - 10.9 0.08 - 0.07 0.18 - 0.17 2.04 - 1.98 2.30 - 2.22 0.4 - 0.4 0.9 - 0.9 11.0 - 11.7 12.3 - 13.0 0.08 - 0.07 0.18 - 0.17 2.46 - 2.44 2.72 - 2.
PAGE 120
1. Specifications Indoor model: KH3642 / Outdoor model: CH3642 ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 230 - 208 V / 1 phase / 60 Hz A 230 - 208 V / 1 phase / 60 Hz 0.5 - 0.5 1.8 - 1.8 12.6 - 13.2 14.9 - 15.5 0.10 - 0.09 0.36 - 0.34 2.83 - 2.69 3.29 - 3.12 0.5 - 0.5 1.8 - 1.8 15.4 - 16.8 17.7 - 19.1 0.10 - 0.09 0.36 - 0.34 3.45 - 3.38 3.91 - 3.81 1-1 2-2 95 - 86 97.5 - 88.
PAGE 121
2. Processes and functions 2. PROCESSES AND FUNCTIONS 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 Room Temperature Control ...................................................................... II - 2 (A)Cooling ................................................................................................ II - 2 (B)Heating ................................................................................................ II - 3 Cold Draft Prevention (Heating Cycle) ....
PAGE 122
2. Processes and functions 2-1 Room Temperature Control The Unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF. This process is controlled by the thermostat located in the remote control unit. The figures on this and the next pages show how each part of the system performs when the room temperature changes and the thermostat activates the compressor to start (thermo ON) or stop (thermo OFF). Fig. 1 shows about the cooling cycle, and Fig. 2 shows about the heating cycle.
PAGE 123
2. Processes and functions (B) Heating THERMO. ON REMOTE CONTROL SENSOR (Only for wireless remote controller) SET. +2°F SETTING TEMP. SET. –2°F THERMO. ON THERMO. OFF THERMO. OFF THERMO. ON THERMO. OFF BODY SENSOR THERMO. ON THERMO. OFF THERMO. ON THERMO. ON +2°F SET TEMP.+7°F SHIFT –2°F SET TEMP.
PAGE 124
2. Processes and functions 2-2 Cold Draft Prevention (Heating Cycle) The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up. ❑ STANDBY shows on the remote controller when the indoor fan speed is LL (very low) or OFF. This condition occurs in the following 3 cases: • During Thermo OFF (refer to 2-1 B).
PAGE 125
2. Processes and functions 2-3 Automatic Fan Speed (Indoor Unit) By pressing the FAN SPEED button on the remote controller, the fan speed can be set at one of four steps: AUTO., HI., MED., or LO. When set at AUTO. the indoor unit fan speed will be automatically adjusted to the room temperature as the two charts shown below. (A) Cooling ROOM TEMP. (deg) +3 +2 +1 SET TEMP. Section INDOOR FAN SPEED H M L M 1 H H : High L : Low M : Middle 1923_M_S Fig.
PAGE 126
2. Processes and functions 2-4 Outdoor Fan Speed Control To optimize the performance of air conditioner, the outdoor fan speed is selected automatically according to the outdoor temperature. ❑ Note that in both Cooling and Heating modes, the fan comes on at first at high speed (H mode) for 5 seconds. Since outdoor conditions sometimes make it difficult for the fan to start, this sudden surge of power may be necessary.
PAGE 127
2. Processes and functions 2-5 Freeze Prevention (Cooling) Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost build up on the coil blocks cool air circulation from the indoor unit's fan. MIN. VALUE OF EITHER E1 OR E2 INDOOR UNIT TEMP. 34 33 32 Section 31 CONTINUOUS DETECTION FOR 2 MINUTES (°F) ELECTRONIC REF. CONTROL VALVE SIGNAL COMPRESSOR OPEN 1 OPEN ON MINIMUM 3 MINUTES ON 1925_THS_I 2 Fig.
PAGE 128
2. Processes and functions 2-6 Condensing Temperature Control (Cooling) Condensing temperature is controlled by the outdoor heat exchanger coil temperature as sensed by sensor C2. 140 OUTDOOR UNIT COIL TEMP. C2 (°F) 131 OUTDOOR FAN SPEED Section 1 ELECTRONIC REF. CONTROL VALVE H, M or L FORCED H H, M or L OPEN 1926_THS_I Fig.
PAGE 129
2. Processes and functions 2-7 Overload Protection (Heating) This function prevents the air conditioner from overloading. (°F) 147 144 140 INDOOR UNIT COIL TEMP. (E2) 138 131 127 OVERLOAD PROTECTION OVERLOAD PROTECTION FUZZY CONTROL Section FUZZY CONTROL 1 ELECTRONIC REF. CONTROL VALVE OUTDOOR FM OPEN OPEN START UP COMPENSATION OFF H OR M H L H OR M 1927_THS_I 2 Fig.
PAGE 130
2. Processes and functions 2-8 Discharge Temperature Control (Cooling and Heating) This function prevents the compressor motor from burnout by overheating. (42 Type) (24, 36 Type) 275 239 257 221 239 203 235 DISCHARGE GAS TEMP. (°F) 230 200 221 185 194 Section 1 OUTDOOR FAN SPEED H OR M COMPRESSOR ELECTRONIC REF. CONTROL VALVE (DISCHARGE TEMP.) H OR M L ON OPEN 2 OPEN TRIP IS OPERATED. 1928_THS_I Fig.
PAGE 131
2. Processes and functions 2-9 Auto. Mode for Automatic Heating/Cooling Switching ❑ When the AUTO mode is selected, the microprocessor calculates the difference between the set temperature and the room temperature, and automatically switches to the COOLING or HEATING mode to maintain the desired temperature. Room temp. ] Set temp. ➔ COOLING Room temp. < Set temp. ➔ HEATING This means that if the room temperature is higher or equal to the set temperature, COOLING operation starts.
PAGE 132
2. Processes and functions Chart summary and Explanations ❑ This chart shows how the Operation Mode (COOLING or HEATING) is determined by the microprocessor taking the room temperature into consideration. It also shows the temperature points at which the cooling or heating mode is switched, when the AUTO mode is selected. ❑ After operation starts, the set temperature shifts automatically by +4 deg. at cooling and by -4 deg. at heating.
PAGE 133
2. Processes and functions 2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) When the outdoor temperature is low, frost may form on the outdoor heat exchanger coil. When this occurred, the defrosting system operates. The microprocessor in the outdoor unit monitors the relationship between the temperature of the outdoor heat exchanger coil and the outdoor temperature so it can defrost when necessary. Flow of Defrosting OUTDOOR COIL TEMP.
PAGE 134
2. Processes and functions 2-11 4-Way Valve, Solenoid Control The basic function of the 4-way valve is to direct the refrigerant in the correct direction according to the Operation Mode (COOLING or HEATING) selected. The following two charts show conditions of the controls and functions listed in the left hand column when the solenoid is ON or OFF.
PAGE 135
2. Processes and functions (B) AUTO Control Mode ON POWER SOURCE OFF OPERATION BUTTON ON MORE THAN 10 MINUTES (THERMO. OFF) AUTO COOL MODE CONTROL HEAT MORE THAN 10 MINUTES (THERMO. OFF) COOL HEAT HEAT THERMO. OFF THERMO. ON 3 MINUTES COMPRESSOR OFF MORE THAN 3 MINUTES ON OFF ON OFF ON ON OFF Section MORE THAN 30 – 50 SECONDS SOLENOID COIL (4-WAY VALVE) OFF MORE THAN 30 – 50 SECONDS ON OFF 1 ON 0445_M_S Fig.
PAGE 136
2. Processes and functions 2-13 Electronic Refrigerant Control Valve ❑ This valve allows very precise and smooth control of the amount of refrigerant flow in the system. Since the valve is operated by a step motor, the control circuits can open or close it in very exact amounts, so the degree of heating or cooling can be changed by just a little, or changed very quickly or slowly. (Completely close …… 0 step) (Full open................
PAGE 137
2. Processes and functions 2-15 Compressor Current Detection Circuit ❑ The Compressor Current Detection Circuit detects the compressor current and, depending on the current range, can stop the compressor motor so it will not be damaged by overcurrent. ❑ Overcurrent can be caused by several factors, particularly mechanical seizing of the compressor or liquid backflow. Either of these conditions can hold the compressor to run, and thus drawing so much current that the motor can burn out. Comp. Amps.
PAGE 138
2. Processes and functions 2-16 Electronic Refrigerant Control Valve Control The circulation volume of the refrigerant is controlled by a pulse type electronic control valve. When the power is switched ON, the opening degree of the electronic control valve is controlled between 90 and 480 steps after setting the initial step at the time when the thermostat is ON.
PAGE 139
2. Processes and functions 2-17 Voltage Detection Control When the power voltage falls below 160 V or rises above 260 V, operation lamp and stand-by lamp flash alternately to protect the compressor and electrical components.
PAGE 140
3. Electrical data 3. ELECTRICAL DATA 3-1 3-2 Indoor Units (Electric Wiring Diagram, Schematic Diagram) .................. 4-Way Air Discharge Semi-concealed Type .......................................... Ceiling Mounted Type ............................................................................. Concealed Duct Type ............................................................................. Concealed Duct High Static Pressure Type ...........................................
PAGE 141
Earth Terminal S 1 2 2P (BLU) GRN/YEL BRN RED 1 3 T20 (GRY) 1 3 5 7 9 FM (WHT) TH2 TH3 TH4 1 3 1 2 1 2 1 2 1 2 3 4 (BRN) E3 Coil Earth Terminal 1 2 3 4 5 1 3 MOV S 1 2 P 1 2 1 3 1 2 3 4 5 6 Earth Terminal (BLU) DP LS (WHT) 1 3 LM DP E LM (GRN) 1 3 W 854-2-5268-930-00-1 (X) Earth Terminal Earth Terminal S 1 2 3 2P P 1 2 3 3P (GRN) (WHT) LS (YEL) T10 FS (RED) (WHT) T6 1 3 PNL (GRN) FS 1 2 3 (RED) 26H Controller (CR-TH2442) RC1 (BLU) WL TH1 49FI GRN/YEL S 1
PAGE 142
3.
PAGE 143
BRN RED PNK BLU RS1 (BLK) 1 3 5 7 9 LL L H HH S FM (WHT) TH2 TH3 TH4 E Earth Terminal W 854-2-5268-923-00-1 (T) S 1 2 1 3 1 3 1 2 1 2 1 2 1 2 3 4 1 2 3 (BLU) DP T6 (WHT) LS (WHT) (BRN) E3 Coil 1 2 3 4 5 1 3 LM (GRN) 1 3 TH1 MOV 1 3 (YEL) Temp Room (BLK) E2 Coil T10 (YEL) (RED) E1 Coil 1 2 3 4 5 6 1 3 T20 (GRY) Controller (CR-TH2442) FS (RED) 1 3 (YEL) T10 VCC (WHT) LSW (GRN) PNL 1 2 3 4 5 6 1 3 RS2 (WHT) RC1 S 1 2 3 4 5 6 7 8 9 Connecter P 1 2 3 4 5 6 7 8 9 9P
PAGE 144
3.
PAGE 145
III - 6 1 3 RS1 (BLK) 1 3 RC (BLU) RS2 (WHT) 1 3 1 2 OC (BLU) PNK BLU WHT BLK WHT RED S 1 2 TR1 RC1 VCC (WHT) 1 2 3 4 5 6 BRN BRN RED RED ORG ORG GRN/YEL S 1 2 3 4 5 6 7 8 9 P 1 2 3 4 5 6 7 8 9 FM (WHT) PNL (GRN) 1 3 T20 (GRN) TH1 1 2 Room Temp (YEL) TH2 1 2 1 2 1 3 T6 (WHT) 1 2 3 4 5 1 3 BLK BLK DP DP (BLU) 1 3 GRN/YEL W 854-2-5268-940-00-1 (UH1242) FS (RED) FS (BLU) WL Coil E3 (BRN) MOV 1 2 3 4 Coil E2 (RED) TH4 (YEL) T10 Coil E1 (BLK) TH3 1 2 3 4 5 6 Co
PAGE 146
3.
PAGE 147
III - 8 WHT RED 1 3 RS1 (BLK) 1 3 RC (BLU) RS2 (WHT) 1 3 1 2 S 1 2 OC (BLU) PNK BLU WHT BLK Connecter 2P (BLU) WHT WHT TR1 E FS (RED) 1 3 VCC (WHT) 1 2 3 4 5 6 RC1 FM (WHT) T20 (GRN) 1 3 RED TH1 1 2 Room Temp (YEL) TH2 1 2 1 2 1 3 T6 (WHT) 1 2 3 4 5 LM S 1 2 P 1 2 LM (GRN) 1 3 Connecter 2P (WHT) GRN/YEL W 854-2-5268-935-00-0 (KH2442) (BLU) WL Coil E3 (BRN) MOV 1 2 3 4 Coil E2 (RED) TH4 (YEL) T10 Coil E1 (BLK) TH3 1 2 3 4 5 6 Controller (CR-TH2442) 1 3 5 7
PAGE 148
3.
PAGE 149
III - 10 RED G 1 3 RS1 (BLK) 1 3 RC (BLU) RS2 (WHT) 1 3 1 2 OC (BLU) PNK BLU WHT BLK WHT Connecter 2P (BLU) WHT WHT S 1 2 TR1 E FS (RED) 1 3 VCC (WHT) 1 2 3 4 5 6 RC1 BRN BRN RED RED ORG ORG FMI 49FI FM (WHT) 1 3 T20 (GRN) TH1 1 2 Room Temp (YEL) TH2 1 2 1 2 1 3 S 1 2 3 4 5 P 1 2 3 4 5 T6 (WHT) 1 2 3 4 5 LM LM (GRN) 1 3 GRN/YEL Connecter 5P (WHT) W 854-2-5268-936-00-0 (KH3642) (BLU) WL Coil E3 (BRN) MOV 1 2 3 4 Coil E2 (RED) TH4 (YEL) T10 Coil E1 (BLK) TH3
PAGE 150
3.
PAGE 151
Terminal Plate (5P) 1 L1 L2 G A C B 52C CT WHT RED RED U R RED R S WHT RC1 BLK 32 31 Earth Terminal V W S T CM RED PTC ORG GRY BLK BLK GRN/YEL BRN RED CH P 1 2 Connector S 1 2 2P (WHT) 8 1Y 7 3 1 BLK 5 4 6 RED E Earth Terminal 2 BRN GRN/YEL Earth Terminal 3P(BLK) 52C 1 3 9P(WHT) CN019 1 3 5 7 9 P 1 2 3 4 5 6 7 8 Connector S 1 2 3 4 5 6 7 8 8P (WHT) RC2 3P(WHT) CT1 1 3 3 SUP 1 3P (BLU) 2 OC 1 2P (BLU) BRN 2 G L1 L2 BLU PNK BRN GRY BLK WHT VLT YEL To Ind
PAGE 152
3.
PAGE 153
Earth Terminal A C B 52C CT WHT RED RED U R S CM R WHT 32 31 BLK RC1 V W S T Earth Terminal PTC ORG GRY BLK BLK GRN/YEL BRN RED CH P 1 2 Connector S 1 2 2P (WHT) GRN/YEL E FMO1 49FO1 3P(WHT) CT1 1 3 GRN/YEL BRN 3P(BLK) 52C 1 3 9P(WHT) CN019 1 3 5 7 9 P 1 2 3 4 5 6 7 8 Connector S 1 2 3 4 5 6 7 8 8P (WHT) RC3 P 1 2 3 4 5 6 7 8 Connector S 1 2 3 4 5 6 7 8 8P (WHT) RC2 BRN GRN/YEL Earth Terminal 3 SUP 1 3P (BLU) BRN L1 L2 G BRN GRY GRY 2 OC 1 2P (BLU) BRN 2 G L1
PAGE 154
3.
PAGE 155
Earth Terminal A C B 52C CT WHT RED RED U R S CM R RC1 V W S T 42 41 Earth Terminal ORG GRY BLK BLK GRN/YEL BRN RED CH P 1 2 Connector S 1 2 2P (WHT) GRN/YEL E FMO1 49FO1 3P(WHT) CT1 1 3 GRN/YEL BRN 3P(BLK) 52C 1 3 9P(WHT) CN019 1 3 5 7 9 P 1 2 3 4 5 6 7 8 Connector S 1 2 3 4 5 6 7 8 8P (WHT) RC3 P 1 2 3 4 5 6 7 8 Connector S 1 2 3 4 5 6 7 8 8P (WHT) RC2 BRN GRN/YEL Earth Terminal 3 SUP 1 3P (BLU) BRN L1 L2 G BRN GRY GRY 2 OC 1 2P (BLU) BRN 2 G L1 L2 BLU PNK WH
PAGE 156
3.
PAGE 157
4. Service procedures 4. SERVICE PROCEDURES 4-1 4-2 Troubleshooting ...................................................................................... IV (1) Check before and after Troubleshooting ......................................... IV (2) General Troubleshooting Flow Chart: Diagnosis and Remedy ....... IV (3) Meanings of alarm messages .......................................................... IV (4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y .........................
PAGE 158
4. Service procedures 4-1 Troubleshooting This section explains: ❑ What the LED codes mean ❑ What the remote control unit display screen messages mean ❑ How to use the flow charts to find and solve problems ❑ How to use the self-diagnostic tests to find parts that aren’t working right Section 1 2 3 4 This unit is made to be trouble free, and not need much service. However, with time, moving parts wear out, electronic components break down, and sometimes misuse damages the unit.
PAGE 159
4. Service procedures (1) Check before and after Troubleshooting Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first. 1 . Check power supply wiring ❑ Check the power supply wires are correctly connected between terminal No. 1 & 2 on the 5P terminal plates in the indoor unit and the outdoor unit. 2 .
PAGE 160
4. Service procedures (2) General Troubleshooting Flow Chart: Diagnosis and Remedy When you have found a major problem, such as refrigerant not flowing in the system or reduced air circulation, come to this section and find the box listing the problem. Connected to the box are the main causes of the problem and their remedies. To find out which malfunction is happening in your case, check the remote controller for an Alarm Message, and follow the steps in section 3). (A) Cooling Section a.
PAGE 161
4. Service procedures (B) Heating b. Heating Poor heating Is setting temp. suitable ? Change the setting temp. Is heating load too large ? Review heating load estimate. Section Refrigerant flow failure 1 4-way valve is defective. Replace the valve. Refrigerant shortage Charge with refrigerant. Electronic refrigerant control valve is defective. Replace the valve. Compressor is defective. Replace the compressor. Service valves are not fully open. Open the valves fully.
PAGE 162
4. Service procedures (3) Meanings of alarm messages Alarm message E1 E2 Possible Cause of Malfunction • Serial communication errors • Mis-setting Remote controller is detecting error signal from indoor unit. • Indoor unit is detecting error signal from the remote controller. (No serial communications signal) E3 Indoor unit is detecting error signal from outdoor unit. E4 E5 Outdoor unit is detecting error signal from indoor unit. E6 Section Indoor unit is not working correctly.
PAGE 163
4. Service procedures Alarm message Possible Cause of Malfunction Thermistor failure Indoor thermistor is either open or damaged. Outdoor thermistor is either open or damaged. Indoor coil temp. (E1 = TH1) cannot be detected. F1 Indoor coil temp. (E2 = TH2) cannot be detected. F2 Indoor coil temp. (E3 = TH3) cannot be detected. F3 Indoor room (air-intake) temp. can not be detected. F10 Discharge gas temp. (comp. = TH0A) cannot be detected. F4 Outdoor coil gas temp.
PAGE 164
4. Service procedures (4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y If something goes wrong with the outdoor unit, LED lamps on the outdoor P.C.B. Ass’y light up to show the cause of the trouble, in addition to the Alarm message on the remote controller. LED 2 on LED 1 on Remote P.C. board P.C. board controller Section 1 Possible cause of trouble v v No message v V E06, E07, L04 v * No message V v P02 V V P04, P05 V * F04~F09 Sensor is abnormal.
PAGE 165
4. Service procedures (5) 1) Symptoms and parts to inspect Symptom: LCD on the remote controller does not display and remote controller does not operate. Start Is the LED (D80) on Yes the indoor unit PCB lit? Repair the remote controller wiring. No Section 1 Miswiring of power supply wires and indoor/outdoor control lines Yes Is there 230-208 V AC between U1 and U2 of the terminal plate? No Yes No Correct the wiring.
PAGE 166
4. Service procedures 2) Symptom: LCD on the remote controller displays “CHECK E01”. (Unusual communication between remote controller and indoor unit.) Start Remote controller judges itself with self-diagnostic functions NG Replace the remote controller. OK Section 1 Is there an open or a contact defect in the No. 1 line of the remote controller? Yes No Is there 230 -208 V AC between U1 and U2 of terminal plate? Yes No 2 Correct the wiring.
PAGE 167
4. Service procedures 4) Symptom: LCD on the remote controller is displaying “CHECK E04”. (Unusual communication between the indoor and outdoor units.) Start Cut the breaker and remove the indoor/outdoor unit control lines connected to U1 and U2 of the indoor unit 8P terminal plate. After shorting the test pin (CN2) on the indoor unit PCB, switch the breaker on.
PAGE 168
4. Service procedures 6) Symptom: LCD on the remote controller is displaying “CHECK E06”. (Unusual communication between the indoor and outdoor units) Start Is the setting for the indoor address on the indoor unit PCB inappropriate? Yes Correct the setting. No Is there a cut line or contact defect between an indoor and outdoor unit’s control line? Section Yes Correct wiring. No 1 0337_M_I Influenced by external noise 2 7) Symptom: LCD on the remote controller is displaying “CHECK E08”.
PAGE 169
4. Service procedures 9) Symptom: LCD on the remote controller displays “CHECK P01”. (Indoor fan protection thermostat operation warning) Start No Yes Yes Is there 230-208 V AC between T20-1 and T20-3 on the indoor unit PCB? Is the indoor fan wire winding protection thermostat (49FI) off? Correct the connection Yes No Section Replace the indoor unit PCB. 1 Replace the indoor fan.
PAGE 170
4. Service procedures 10) Symptom: LCD on the remote controller displays “CHECK P02”. (Compressor / outdoor fan protection thermostat operation warning / power supply voltage abnormality) Start Section Is the power supply to the outdoor No unit normal? (Voltage / defective phase?) Check the power breaker etc. and repair. Yes 1 Is the fuse on the outdoor unit PCB blown (F1 and F2)? Yes Replace the fuse. No 2 Is the high pressure switch (63 PH) off? Yes Replace the outdoor unit PCB.
PAGE 171
4. Service procedures 11) Symptoms: LCD on the remote controller displays “CHECK P03”. (Alarm for unusual discharge temp. of compressor) Start Unusual discharge gas temperature • Refrigerant shortage • Clogged refrigerant circuit • Electronic refrigerant control valve defect (indoor unit) Section 1 0343_M_I 12) Symptom: LCD on the remote controller displays “CHECK P04”. (High-pressure switch activation warning) 2 Start The system does not operate again.
PAGE 172
4. Service procedures 13) Symptom: LCD on the remote controller displays “CHECK P05”. (Negative phase detection operation warning) Start Is the power supply to the outdoor unit normal? (Voltage defective phase?) No Check the power breaker etc. and repair Yes Section 1 Does the outdoor unit operate when two of the three phases are changed? (Actuation of negative phase protector) Yes No problem No Is the fuse (F1, F2) on the indoor unit PCB blown? Yes Replace the fuse.
PAGE 173
4. Service procedures 15) Symptom: LCD on the remote controller displays “CHECK E16”. Start When the group of the units are installed, is there any mis-cross between inter unit control wiring and refrigerant tubing? Yes Repair the wiring. No Section Are the total capacities of indoor units to that of outdoor units more than 107%? Yes Select indoor units which match with the outdoor capacity. 1 No Confirm less than 5 indoor units are connected.
PAGE 174
4. Service procedures 18) Symptom: LCD on the remote controller displays “CHECK H01, H02, H03”. (compressor current detection) * Please check the related part described in the following chart after confirming the code setting (S4) of the outdoor unit’s capacity on the PCB in the outdoor unit.
PAGE 175
4. Service procedures (6) Procedures When a Specific Component Does Not Work 1) Indoor fan does not operate. Is fan motor capacitor normal ? No Replace the capacitor. Yes Is there voltage output of P.C.B. Ass'y for fan motor ? No Replace the P.C.B. Ass'y in the indoor unit. Section Yes 1 • Check resistance of fan motor winding. Out 2 Replace the fan motor. 0650_M_S 2) Flaps in indoor unit’s air outlet does not operate, when you press SWEEP button. No Check the louver motor resistance.
PAGE 176
4. Service procedures 4) Compressor motor does not operate. Does compressor motor magnetic No Replace the compressor contactor (52C) actuate ? motor magnetic contactor. Yes Check resistance of compressor motor winding. Section NG 1 Replace the compressor. 0461_M_I 5) 2 Outdoor fan does not operate. Are auxiliary relays (1Y) normal ? No Replace the relays. Yes 3 Is fan motor capacitor normal ? Replace the capacitor. Yes Is there voltage output of P.C.B.
PAGE 177
4. Service procedures (7) Service Functions of Optional Wired Remote Controller From the remote controller you can control both the operation and settings of the unit as well as perform several useful service checks. This section explains how to use the remote controller on the following items from (A) to (I). (A) Use the test run procedure. (B) Check the sensor temperature readings. (C) Accessing the service problem history. (D) Check the remote controller itself for correct operation.
PAGE 178
4. Service procedures (B) Check the sensor temperature readings The air conditioner has thermo sensors which are used to control the unit. ❏ Each sensor has an address which is made up of the indoor unit address, and the sensor address. The indoor unit address is used only when several units are hooked up to one remote controller (group control). If there is only one unit, made up of one indoor and one outdoor unit, then only the sensor address should be put in, as shown in the procedure below.
PAGE 179
4. Service procedures Refer to the table below for the relationship between the sensor address and the location of the sensor. Relationship between the sensor address and the location of sensor Sensor Address (CODE No.) Indoor Unit 00 01 02 03 04 05 06 07 08 09 Outdoor Unit 0A 0B 0C 0D 0E 0F 10 11 12 13 14 Location of Sensor (Themistor) A/C controlled room Temp. Remote controller room Temp. Indoor air suction Temp. Indoor coil Temp. (E1) Indoor coil Temp. (E2) Indoor coil Temp.
PAGE 180
4. Service procedures Important Never press (clear) button unless you want to erase the accessed data in memory. Follow the procedure below only when erasing is necessary. ❏ To erase accessed data, press the button. ❏ When erasing is finished,“----” mark appears on the controller’s display. CAUTION After checking the alarm messages, be sure to press the button.
PAGE 181
4. Service procedures Important Never press (clear) button unless you want to erase the accessed data in memory. Follow the procedure below only when erasing is necessary. ❏ To erase accessed data, press the button. ❏ When erasing is finished,“----” mark appears on the controller’s display. CAUTION After checking the alarm messages, be sure to press the (E) button. Execute the auto. address operation ❏ Auto. address operation is executed by pressing the A.
PAGE 182
4. Service procedures (F) Confirm and change the indoor unit address (Ref. Fig. IV-8, IV-9) ❏ The purpose of the above function is to let you confirm the indoor unit address after the auto. address operation, and change the indoor unit address if it is needed. a Press the and ( ) buttons at the same time for more than 4 seconds. b Select the R.C. No. which you want to change with the buttons. (up) or (down) button (to confirm the R.C. No.). c Press the The smallest registered indoor No.
PAGE 183
4. Service procedures (G) Change the shift temperature in heating mode (Ref. Fig. IV-10) ❏ If the indoor unit is installed at high location (ex. ceiling level), the thermostat tends to turn off at heating mode because of the hot air temperature around ceiling level. In order to solve the problem, the shift temp. (valid while heating only) is set when shipped from factory. ❏ If the shift temp. is not enough (ex. the indoor unit is installed at position higher than 3 m), the shift temp.
PAGE 184
4. Service procedures (H) Set the indoor unit address (Ref. Fig. IV-11, IV-12) ❏ This function is usable if the auto. address operation is not available. Indoor unit address can be set one by one by remote controller in such case. NOTE 1) In case of group control, branch wiring for group control should be removed temporarily. 2) In case of remote controllerless system, remote controller should be connected with the indoor unit temporarily. (Set the No. of R.C.
PAGE 185
4. Service procedures R.C. address 1 2 3 d, g, j R.C. address 1 2 3 Indoor address 1 1 1 Group address 0 0 0 c, f, i m e, h, k a 2078_M_I Fig. IV-11 (I) 2080_M_I Fig. IV-12 Change the period of the filter timer (Ref. Fig. IV-13) ❏ If the period of filter timer is not suitable (for example in case of dirty environment), the period can be shortened to half as follows: a Press the + Section 1 buttons at same time for more than 4 seconds.
PAGE 186
4. Service procedures 4-2 Checking the Electrical Components Earthed wire Clip (1) Measurement of Insulation Resistance Probe • The electrical insulation is acceptable when the resistance exceeds 1 MΩ. Insulation tester 0638_X_S 1 Section 1 Power Supply Wires Terminal plate Clamp the earthed wire of the Power Supply wires with a lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires. (Fig.
PAGE 187
4. Service procedures (2) Checking the Protective Devices • Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device. • Then check continuity among plug’s (and/or socket’s) terminal as in Fig. IV-18. • Normality of the protective device can be judged by the following table. The Protective Device is proved normal if there is a continuity between terminals. socket Section 1 Multimeter Ω 2 Fig.
PAGE 188
4. Service procedures (3) Checking the Electrical Parts 1 Power transformer (TR1) ..................... Indoor unit • Primary • Secondary *Measure the coil resistance. 230-208V ; Measure the resistance between No.1 and No.3 (WHT lead wires) terminals of 3P (WHT) socket connected to power transformer. 14.8V ; Measure the resistance between No.1 and No.2 (RED lead wires). 14.8V ; Measure the resistance between No.3 and No.4 (BRN lead wires). Section 1 Refer to “1-3 Other component specifications”.
PAGE 189
4. Service procedures 5 Motor capacitor ............ Both in indoor and outdoor unit • Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in Fig. IV-19. Observe the deflection of the pointer, setting the resistanc measuring range of the multimeter to the maximum value. • The capacitor is “good” if the pointer bounces to a great extent and then gradually returns to its original position.
PAGE 190
4. Service procedures 7 Solenoid coil of the electronic refrigerant *Measure the coil resistance. control valve (ERCV) ………… Indoor unit • Measure the resistance between No. 5 (GRY lead wire) and other terminals (another color of lead wires) of 5P (WHT) plug connected to the solenoid coil. Refer to “1-2-(A) Major component specifications”.
PAGE 191
4. Service procedures (4) Thermistor Characteristic Curv (2) Indoor heat exch. coil sensor : TH2(E1), TH3(E2) Outdoor heat exch. coil sensor : TH6(C1), TH7(C2) (1) Room temp. sensor : TH1 (KTEC-35) ( PBC-41E) 40 35 10 9 1 30 8 Resistance (kn ) Resistance (kn ) Section 7 6 5 4 3 25 20 15 2 10 2 5 1 0 –4 50 59 68 77 86 95 5 104 14 23 32 41 Temperature (°F) 50 59 68 1045_M_I Temperature (°F) 3 1044_M_I (3) Compressor discharge gas temp.
PAGE 192
4. Service procedures (5) PCB Setting ● Setting of outdoor control PCB (A) Standard control (single outdoor unit) In case of single outdoor unit installation, even if in case of twin, triple or quartet type (2, 3 or 4 indoor units), no setting necessary. Keep factory shipment state (R.C. address is set in “0”). Section 1 2 3 4 In this case, auto. address operation takes place automatically for the first time when the power is switched on. This takes about a few minutes.
PAGE 193
4. Service procedures (6) R.C. Address Setting Method Outdoor unit R.C. address setting method In case of group control or central control, set the R.C. address to 1, 2, 3, ... according to the No. of outdoor units. Outdoor control PCB CN006 (2P Black) Refrigerant circuit address (factory setting = 0) Section Refrigerant circuit address (black) 0 1 : S2 Refrigerant circuit address (2P DIP switch, green or Blue) 10 20 position position ON ON side A.
PAGE 194
4. Service procedures (7) Automatic Address Setting Method (8) Displaying Indoor / Outdoor Unit Combination Numbers — For group control and central control with multiple outdoor units — Carry out automatic address setting with the remote controller. (1) All auto. address operation 1 Press the and ( ) buttons at the same time for more than 4 seconds. 2 Section 1 After addresses are automatically set in order for the outdoor units from No. 1 to No. 30, the system returns to the normal stopped state.
PAGE 195
4. Service procedures (9) Items to Check Prior to Test Run (1) Turn on the power supply switch more than 5 hours before in order to charge the crank case heater. (2) Fully open the outdoor service valve after making the leak inspection of field connected tubing, vacuuming, and gas charging if necessary. (3) Check the capacity code setting. * The factory setting is as shown in the table. Double check it. * The capacity code is set by S4 (green or blue, 4P DIP switch) on outdoor control PCB.
PAGE 196
4. Service procedures (10) Test Run ■ Preparing for Test Run ON ● Before attempting to start the air conditioner, check the following: Section 1 (1) All loose matter is removed from the cabinet especially steel filings, bits of wire, and clips. (2) The control wiring is correctly connected and all electrical connections are tight.
PAGE 197
4. Service procedures ● Test Run Procedure Start Multiple remote control? Yes Turn on RCU address SW of sub remote control unit No Recheck the test items before test operation. Check the indoor and outdoor unit combination (wiring). Section Yes Single type? (One indoor unit and one remote controller for one outdoor unit) Multiple indoor units for one outdoor units? No No Group control for multiple outdoor units? No Go next R.C.
PAGE 198
4.
PAGE 199
4. Service procedures ● PCB (CR-CH2442) FOR OUTDOOR UNITS CN013 (WHT) : CK. H CN012 (WHT) : CK. L CN023 (GRN) : DISCH CN011 (RED) : TEST CN022 (RED) : C2 CN008 (WHT) CN021 (BLK) : C1 CN003 (WHT) : VCC CR-CH2442 Section CN026 (YEL) : TMX60 CN007 (RED) : EXCT 1 S001 (A. ADD) : Auto address CN025 (WHT) : CT1 CN004 (BLU) : OC CN005 (BRN) : EMG LED1 2 3 4 D015 LED : POW 2 S004 (BLU) : Capacity code S003 (BLU) : R.C. address S002 (BLK) : R.C. address F003 : Fuse 125V / 0.
PAGE 200
4. Service procedures (12) Checking procedure for each PC Board The indoor and outdoor PCBs have functions to check the signal transmission and reception of the serial circuit and to check the microcomputer operation. (Self-diagnosis function) ● Precautions required when checking 1. After turning off the power to the indoor (outdoor) unit, remove the inter-unit control wiring (U1-U2) and create a short-circuit between U1 and U2. 2.
PAGE 201
4. Service procedures (13) TMX60 pins When shorting TMX60 pins on the indoor and outdoor PCBs, operations shown on the above table will be performed on each indoor and outdoor unit. Use TMX60 pins to perform a quick check. NOTE • When checking pin operation, stop the indoor and outdoor units with the remote control unit. ■ Shorting CK.L or CK.
PAGE 202
SANYO FISHER Service Company CENTRAL REGION 1739 Sands Place, Suite G Marietta, GA 30067 Phone: (770) 951-8284 Fax: (770) 951-2077 July. / ’01 Printed in U.S.A.