Service manual

ManualsBrandsMitsubishi ManualsAir ConditionerP08

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

INDOOR UNIT

CONTENTS

1. TECHNICAL CHANGES ········································ 2

2. FEATURES····························································· 3

3. PART NAMES AND FUNCTIONS ························· 4

4. SPECIFICATIONS·················································· 6

5. 4-WAY AIR FLOW SYSTEM ·································· 9

6. OUTLINES AND DIMENSIONS ····························· 11

7. WIRING DIAGRAM ················································ 12

REFRIGERANT SYSTEM DIAGRAM

······················· 13

9. MICROPROCESSOR CONTROL·························· 14

10. TROUBLESHOOTING············································ 21

11. DISASSEMBLY PROCEDURE······························· 28

R410A / R22

No. OCH410

REVISED EDITION-A

July 2007

NOTE:

• This manual describes

only service data of the

indoor units.

Indoor unit

[model names] [Service Ref.]

PLFY-P08NCMU-E

PLFY-P08NCMU-E.TH

PLFY-P08NCMU-E

1.TH

PLFY-P12NCMU-E

PLFY-P12NCMU-E.TH

PLFY-P12NCMU-E

1.TH

PLFY-P15NCMU-E

PLFY-P15NCMU-E.TH

PLFY-P15NCMU-E

1.TH

PARTS CATALOG (OCB410)

Revision:

• PLFY-P08/12/15NCMU-

1.TH are added in

REVISED EDITION-A.

• Some descriptions have

been modified.

• Please void OCH410.

Model name

indication

OCH410A.qxp 07.7.18 1:31 PM Page 1

Summary of content (32 pages)

PAGE 1
OCH410A.qxp 07.7.18 1:31 PM Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2007 No. OCH410 REVISED EDITION-A TECHNICAL & SERVICE MANUAL R410A / R22 Indoor unit [model names] PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E [Service Ref.] Revision: PLFY-P08NCMU-E.TH PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.TH • PLFY-P08/12/15NCMUE1.TH are added in REVISED EDITION-A. • Some descriptions have been modified. • Please void OCH410.
PAGE 2
OCH410A.qxp 1 07.7.18 1:31 PM Page 2 TECHNICAL CHANGES PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P15NCMU-E.TH ➔ ➔ ➔ PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E1.TH • PANEL has been changed. SLP-15AAU(White : 0.70Y 8.59/0.97) ➔ SLP-15AAUW(Pure white : 6.4Y 8.9/0.
PAGE 3
07.7.18 1:31 PM 2 Page 3 FEATURES Models PLFY-P08NCMU-E PLFY-P12NCMU-E PLFY-P15NCMU-E Cooling capacity / Heating capacity 8,000 / 9,000 Btu/h 12,000 / 13,500 Btu/h 15,000 / 17,000 Btu/h Indoor Unit 1. PERFECT PANEL SIZE The brand new 22-7/16 inch PLFY-P08/12/15NCMU-E models are slim, attractive, yet poweful units. PLFY-P08/12/15NCMU-E’s size and shape, which perfectly match 2-by-2 ceilings, and its lighter weight of 34 lbs (PLFY-P08NCMU-E) make installation even easier and more convenient. 2.
PAGE 4
OCH410A.qxp 3 07.7.18 1:31 PM Page 4 PART NAMES AND FUNCTIONS ● Indoor (Main) Unit Filter Removes dust and pollutants from return air. Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Air Intake Returns air from room. ● Wired remote controller Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
PAGE 5
OCH410A.qxp 07.7.18 1:31 PM Page 5 ● Wired remote controller Display Section For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit. Day-of-Week “Sensor” indication Shows the current day of the week. Displayed when the remote controller sensor is used. Time/Timer Display Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, the time to be switched off is shown.
PAGE 6
OCH410A.qxp 07.7.18 1:31 PM 4 Page 6 SPECIFICATIONS 4-1. SPECIFICATIONS PLFY-P08NCMU-E.TH PLFY-P08NCMU-E1.TH Item · PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.TH V Hz Cooling capacity Btu/h 8,000 12,000 15,000 Heating capacity Btu/h 9,000 13,500 17,000 Cooling kW 0.05 0.06 0.06 Heating kW 0.05 0.06 0.06 Cooling A 0.23 0.28 0.28 Heating A 0.23 0.28 0.
PAGE 7
07.7.18 1:31 PM Page 7 4-2. NOISE CRITERION CURVES PLFY-P08NCMU-E.TH PLFY-P08NCMU-E1.TH NOTCH SPL(dB) High 38 Medium 32 Low 29 LINE PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE NC-20 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar) OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
PAGE 8
OCH410A.qxp 07.7.18 1:31 PM Page 8 4-3. ELECTRICAL PARTS SPECIFICATIONS Model Symbol Parts name Thermistor (Room temperature detection) Thermistor (Pipe temperature detection/ Liquid) Thermistor (Pipe temperature detection/ Gas) Fuse (Indoor controller board) PLFY-P08NCMU-E.TH PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.TH TH21 Resistance 30-F/15.8k", 50-F/9.6k", 70-F/6.0k", 80-F/4.8k", 90-F/3.9k", 100-F/3.2k" TH22 Resistance 30-F/15.8k", 50-F/9.
PAGE 9
07.7.18 1:31 PM 5 Page 9 4-WAY AIR FLOW SYSTEM 5-1. FRESH AIR INTAKE (Location for installation) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required. Fresh air intake hole diagram Fresh air intake 3 - {1/8 Burring hole (Unit : inch) {3-15/16 Burring hole pitch 120_ 120_ 4-21/32 {2-7/8 (Cut out hole) Ceiling surface Refrigerant pipe Electrical Box Drain pipe 5-2.
PAGE 10
OCH410A.qxp 07.7.18 1:31 PM Page 10 5-4. FIXING HORIZONTAL VANE Horizontal vane of each air outlet can be fixed according to the environment where it is installed. Setting procedure 1) Turn off a main power supply (Turn off a breaker). 2) Disconnect the vane motor connector of the direction of the arrow with pressing the unlocking button as shown in figure below. Insulate the disconnected connector with the plastic tape.
PAGE 11
07.7.18 1:31 PM 6 Page 11 OUTLINES AND DIMENSIONS PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH 22-7/16(570) 13-3/16(335) 22-7/16(570) 1-7/32(31) 22-11/16~24-13/32(576~620) 16-17/32(420) Suspension bolt pitch Suspension bolt pitch 120- Ceiling surface 3-7/16(87) 19/32~1-15/32(15~37) 2-7/32(56) 13-27/32(352) 13-3/16(335) 21/32(17) 19/32~1-15/32(15~37) 22-11/16~24-13/32(576~620) Ceiling hole 7-15/16(202) Drain pipe VP-25 connection (O.D.
PAGE 12
OCH410A.qxp 07.7.18 1:31 PM 7 Page 12 WIRING DIAGRAM PLFY-P08NCMU-E.TH PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH [LEGEND] SYMBOL NAME INDOOR CONTROLLER BOARD I.B CN32 CONNECTOR REMOTE SWITCH CN41 HA TERMINAL-A CN51 CENTRALLY CONTROL CN52 REMOTE INDICATION FUSE FUSE (6.3A/250V) SW1 SWITCH MODE SELECTION SW2 CAPACITY CODE SW3 MODE SELECTION SW4 MODEL SELECTION SW11 ADDRESS SETTING 1ST DIGIT SW12 ADDRESS SETTING 2ND DIGIT SW14 CONNECTION No. X1 AUX.
PAGE 13
OCH410A.qxp 07.7.18 1:31 PM 8 Page 13 REFRIGERANT SYSTEM DIAGRAM PLFY-P08NCMU-E.TH PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.
PAGE 14
OCH410A.qxp 07.7.18 1:31 PM 9 Page 14 MICROPROCESSOR CONTROL INDOOR UNIT CONTROL 9-1. COOL OPERATION TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE FUNCTION FILTER ˚F˚C ˚F˚C WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP. MENU BACK PAR-21MAA MONITOR/SET ON/OFF ON/OFF FILTER DAY CLOCK CHECK TEST OPERATION 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display COOL. 3 Press the TEMP. button to set the desired temperature.
PAGE 15
07.7.18 1:31 PM Page 15 From the preceding page Control modes 3. Drain pump Remarks Control details 3-1. Drain pump control • Always drain pump ON during the COOL and DRY mode operation. (Regardless of the thermo ON/ OFF) • When the operation mode has changed from the COOL or DRY to the others (including Stop), OFF the control after the drain pump ON for 3 minutes. Drain sensor function • Energize drain sensor at a fixed voltage for a fixed duration.
PAGE 16
OCH410A.qxp 07.7.18 1:31 PM Page 16 9-2. DRY OPERATION 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display DRY. 3 Press the TEMP. button to set the desired temperature. NOTE: The set temperature changes 1°F(2°F) when the or button is pressed once. Dry 67 to 87°F Variable range of the set temprature depends on the remote controller which is applied.
PAGE 17
OCH410A.qxp 07.7.18 1:31 PM Page 17 9-3. FAN OPERATION 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display FAN. TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE FUNCTION FILTER ˚F˚C ˚F˚C WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP. MENU BACK PAR-21MAA MONITOR/SET ON/OFF ON/OFF FILTER DAY CLOCK CHECK TEST OPERATION CLEAR Control modes 1. Fan 2. Drain pump Control details Set by remote controller.
PAGE 18
OCH410A.qxp 07.7.18 1:31 PM Page 18 9-4. HEAT OPERATION 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display HEAT. 3 Press the TEMP. button to set the desired temperature. NOTE: The set temperature changes 1°F(2°F) when the or button is pressed once. Heating 63 to 83°F Variable range of the set temprature depends on the remote controller which is applied. [DEFROST] The [DEFROST] symbol is only displayed during the defrost operation.
PAGE 19
07.7.18 1:31 PM Page 19 From the preceding page Control details Control modes 2. Fan 2-3. Thermo OFF mode When the thermoregulating function changes to OFF, the indoor fan operates in [Extra low]. 2-4. Heat defrosting mode The indoor fan stops. 3. Drain pump No drain pump operation However, when the control changes from COOL or DRY operation, the drain pump operates for 3 minutes. 4.
PAGE 20
OCH410A.qxp 07.7.18 1:31 PM Page 20 9-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION] TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE ˚F˚C ˚F˚C TEMP. MENU BACK PAR-21MAA MONITOR/SET FUNCTION FILTER WEEKLY SIMPLE AUTO OFF ONLY1Hr. ON/OFF ON/OFF FILTER DAY CLOCK CHECK TEST OPERATION CLEAR 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display AUTO. 3 Press the TEMP. button to set the desired temperature.
PAGE 21
OCH410A.qxp 07.7.18 1:31 PM 10 Page 21 TROUBLESHOOTING 10-1. HOW TO CHECK THE PARTS PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH Parts name PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.TH Check points Thermistor (TH21) (Room temperature detection) Thermistor (TH22) (Pipe temperature detection/ Liquid) Thermistor (TH23) (Pipe temperature detection/ Gas) Disconnect the connector then measure the resistance with a tester.
PAGE 22
OCH410A.qxp 07.7.18 1:31 PM Page 22 < Thermistor for lower temperature > 50 Room temperature thermistor(TH21) Liquid pipe temperature thermistor(TH22) Gas pipe temperature thermistor(TH23) Thermistor R0=15k' ± 3% Fixed number of B=3480k' ± 2% Rt=15exp { 3480( 30_F 50_F 70_F 80_F 90_F 100_F 1 273+(t-32)/1.8 40 Resistance (k") Thermistor for lower temperature 1 )} 273 15.8k' 9.6k' 6.0k' 4.8k' 3.9k' 3.
PAGE 23
07.7.18 1:31 PM Page 23 Output Output (Phase) 1 2 3 4 {1 ON OFF OFF ON {2 ON ON OFF OFF {3 OFF ON ON OFF {4 OFF OFF ON ON Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order. • When linear expansion valve operation stops, all output phases become OFF. • At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will lock and vibrate.
PAGE 24
OCH410A.qxp 07.7.18 1:31 PM Page 24 10-2.
PAGE 25
07.7.18 1:31 PM Page 25 Pole Operation by switch Effective timing SW11 78 Indoor controller board SW14 F01 23 25 45 6 This is the switch to be used when the indoor unit is operated with R2 series outdoor unit as a set. 90 1 CDE AB CDE AB F01 SW11 90 1 78 78 78 SW14 SW12 789 789 Rotary switch Before power supply ON 45 6 Rotary switch 45 6 1 Address setting should be done when M-NET remote controller is being used.
PAGE 26
OCH410A.qxp 07.7.18 1:31 PM Page 26 10-3. TEST POINT DIAGRAM 10-3-1. Indoor controller board PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH CN2M Connect to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar) PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.TH CN3A Connect to the terminal block (TB15) (MA-Remote controller connecting wire) 1 (+)) Between 1 to 3 8.7-13V DC (Pin1 CN2D Connect to the indoor power board (CN2S) 1 (+)) 12.5-13.
PAGE 27
OCH410A.qxp 07.7.18 1:31 PM Page 27 10-3-2. Indoor power board PLFY-P08NCMU-E.TH PLFY-P12NCMU-E.TH PLFY-P08NCMU-E1.TH PLFY-P12NCMU-E1.TH PLFY-P15NCMU-E.TH PLFY-P15NCMU-E1.TH CN2S Connect to the indoor controller board (CN2D) Between 1 to 3 12.6-13.
PAGE 28
OCH410A.qxp 11 07.7.18 1:31 PM Page 28 DISASSEMBLY PROCEDURE PLFY-P08/12/15NCMU-E.TH PLFY-P08/12/15NCMU-E1.TH OPERATING PROCEDURE Be careful on removing heavy parts. PHOTOS&ILLUSTRATIONS 1. Removing the air intake grille (1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille. (2) Remove the string hook from the panel to prevent the grille from dropping.
PAGE 29
OCH410A.qxp 07.7.18 1:31 PM Page 29 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 5. Removing the room temperature detection (TH21) (1) Remove the panel. (Refer to 3) (2) Pull out the room temperature detection from the drain pan. (3) Remove the 2 screws fixed to the control box cover, and remove the control box cover. (4) Remove the connector (CN20) from the indoor controller board, and disconnect the room temperature detection. 6. Removing the drain pan (1) Remove the panel.
PAGE 30
OCH410A.qxp 07.7.18 1:31 PM Page 30 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 9. Removing the drain pump (DP) and drain sensor (DS) (1) Remove the panel. (Refer to 3 ) (2) Remove the drain pan. (Refer to 6) (3) Remove the 2 screws fixed to the control box cover, and remove the control box cover. (4) Remove the connectors of the (CNP) and the (CN31) from the indoor controller board. (5) Remove the 1 screw fixed to the cover, and remove the cover.
PAGE 31
OCH410A.qxp 07.7.
PAGE 32
OCH410A.qxp 07.7.18 1:31 PM Page 32 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN cCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jul. 2007 No. OCH410 REVISED EDITION-A PDF 8 Distributed in Nov. 2006 No. OCH410 PDF 8 Made in Japan New publication, effective Jul.