2005 Air-Conditioners For Building Application TECHNICAL & SERVICE MANUAL Series PEFY Ceiling Concealed Models PEFY-P06NMLU-E PEFY-P08NMLU-E PEFY-P12NMLU-E CONTENTS SAFETY PRECAUTIONS ·························1 1. FEATURES ···········································3 2. PART NAMES AND FUNCTIONS ········4 3. SPECIFICATION ···································6 4. OUTLINES AND DIMENSIONS············8 5. WIRING DIAGRAM ·······························9 6. REFRIGERANT SYSTEM DIAGRAM····10 7.
SAFETY PRECAUTIONS 1. Before installation and electric work s Before installing the unit, make sure you read all the “Safety precautions”. s The “Safety precautions” provide very important points regarding safety. Make sure you follow them. • • • s This equipment may cause the adverse effect on the same supply system. s Please report to or take consent by the supply authority before connection to the system.
2. Warning: • Note the following when building a heater in the air conditioning system. - Leave enough space between units for proper ventilation so that the indoor unit temperature does not exceed 40˚C when windless. - Keep the heater clean, and take appropriate measures so that the indoor unit does not suck in the dust particles that accumulate on the heater. - Use the optional heater cable (PAC-YU24HT) to perform an interlocked operation with indoor units.
1 FEATURES Series PEFY Ceiling Concealed Indoor unit Models 3 Cooling capacity/Heating capacity kW BTU / h PEFY-P06NMLU-E 1.8 / 2.0 6000 / 6700 PEFY-P08NMLU-E 2.3 / 2.6 8000 / 9000 PEFY-P12NMLU-E 3.5 / 4.
2 PART NAMES AND FUNCTIONS ● Indoor (Main) Unit Air outlet Air inlet ● Remote controller [PAR-21MAA] ● Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. [Operation buttons] 1 TEMP.
[Display] A CENTRALLY CONTROLLED E ON ERROR CODE C NOT AVAILABLE TEMP. G 5 C C STAND BY DEFROST A B C D E F G H I J K L M N O P 1Hr. OFF CLOCK CHECK B P Current time/Timer Centralized control Timer OFF Timer indicator Operation mode: COOL, DRY, “Locked” indicator Set temperature Power ON Louver Ventilation Filter sign Set effective for 1 hr.
SPECIFICATION 3 3-1. Specification PEFY-P-NMLU-E Item Power sourse Capacity *1 Model Cooling Heating Height Dimension Width Depth Net weight FAN Airflow rate (Low-Middle-High) External static pressure Noise level (Low-Middle-High) *2 Filter kW BTU/h kW BTU/h mm in mm in mm in kg lb m3/min cfm 208V Pa 230V 208V dB(A) 230V PEFY-P06NMLU-E 1.8 6000 2.0 6700 4.8-5.8-7.9 169-205-279 5 5 25-29-36 25-29-36 PEFY-P08NMLU-E 208/230V, 60Hz 2.3 8000 2.6 9000 225 8-7/8 790 31-1/8 550 21-21/32 18 40 4.8-5.
3-2. Electrical parts specifications Model Parts name Symbol PEFY-P08NMLU-E PEFY-P06NMLU-E PEFY-P12NMLU-E Tranrsformer T (Primary) 50/60Hz 220-240V (Secondry) (23.5V 0.9A) Room temperature thermistor TH21 Resistance 0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ, 30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.0kΩ Liquid pipe thermistor TH22 Resistance 0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ, 30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.
(Accessory) Air filter (29/32) 610(24-1/32) 80 664(26-5/32)(Suspension bolt pitch) 23 710(27-31/32) 80 Bottom plate 2 Liquid pipe (Transmission) 1) 510(20-3/32) 550(21-21/32)( 55 148 (5-27/32) 12-¿3(1/8) 15(19/32) Air outlet (2-3/16) (3-5/32) 15(19/32) 30(1-3/16) 2 3-¿3(1/8) (113(4-15/32)) 3 Drain pipe 1 Gas pipe 459(18-3/32)(Suspension bolt pitch) Control box Terminal bed (Power source) Terminal bed 4-14X30(9/16X1-3/16) Slot Suspension bolt hole (3-5/32) Air inlet 3)
9 7 8 6 5 4 9 0 1 SW5 CN62 (White) 2 3 SW14 SW12 (Connection No.) (2nd digit) 0 EF 1 2 D 3 C 4 B 5 A9 6 7 8 SW1 CN82 (White) 1 23 456 6 5 4 2 3 SW11 (1st digit) 7 8 9 0 1 SW7 LED1 LED2 TH21 21 TH22 21 TH23 21 21 (White) CN31 LEV 6 54 321 (White) CN60 NAME Fan motor Capacitor (for MF) Indoor controller board Address board Power source terminal bed Transmission terminal bed Transmission terminal bed Fuse AC250V 6.3A T Transformer Electronic linear expan.
6 REFRIGERANT SYSTEM DIAGRAM Gas pipe thermistor TH23 Gas pipe Liquid pipe thermistor TH22 Brazed joints Heat exchanger Linear expansion valve Strainer (#100mesh) Strainer (#100mesh) Room temperature thermistor TH21 mm Capacity Item PEFY-P06·08·12NMLU-E Gas pipe ø12.7<1/2> Liquid pipe ø6.
7 TROUBLE SHOOTING 7-1. How to check the parts Parts name Check points Room temperature thermistor (TH21) Liquid pipe thermistor (TH22) Gas pipe thermistor (TH23) Disconnect the connector, then measure the resistance using a tester. (Sorrounding temperature 10°C~30°C[50°F~86°F]) Trans Disconnect the connector and measure the resistance using a tester. Abnormal Open or short CNT 3T CN3T 3 Normal 4.3kΩ~9.6kΩ 1 Normal App.15 Ω App.
7-2. Setting of address switch Make sure that power source is turning off.
7-3. Setting of Dip-switch (at delivery) Models Dip-SW SW1 PEFYP06NMLU-E ON OFF PEFYP08NMLU-E ON OFF PEFYP12NMLU-E ON OFF 1 2 3 4 5 6 7 8 910 SW1 123456 S W3 ON OFF 1 2 3 4 5 6 7 8 910 ON OFF 1 2 345 S W3 ON OFF 1 2 3 4 5 6 7 8 910 13 LED operation under normal state LED1 At applying main power source Lighting LED2 7-4. Function At receiving MA transmission power source Lighting ON OFF S W5 220V 240V ON OFF S W5 220V 240V S W4 1 2 345 7-4.
8 DISASSEMBLY PROCEDURE Be careful on removing heavy parts. 8-1. CONTROL BOX OPERATING PROCEDURE 1.Removing the control box cover (1) Remove the fixing screws (two) of the control box (A), and remove the cover. (Fig. 1) PHOTOS fig.1 (A) *At this stage, the following servicing is possible. 1 Operation and check of the switches (listed below) which are on the control board.
Be careful on removing heavy parts. 8-2. FAN and FAN MOTOR OPERATING PROCEDURE 1.Removing the fan casing and sirocco fan. (1) Remove the bottom plate 1. (fixing screws : six) (Fig. 3) PHOTOS fig.3 (2) Remove the fixing screws (three) of the fan casing, and turn it in direction of arrow. (Fig. 4) Bottom plate1 (3) Remove the fixing screws (two) of the fan casing, and loosen the set screw of the sirocco fan, and remove the fan casing and sirocco fan. (Fig. 5) 2.Removing the fan motor.
Be careful on removing heavy parts. 8-3. DRAINPAN OPERATING PROCEDURE 1.Removing the drainpan. (1) Remove the fixing screw (one) of the drainpan.(Fig. 10). (2) Slide the drainpan in the order of arrow 1,2,3, and remove the drainpan. (Fig. 11) PHOTOS fig.10 fig.
8-4. LEV,THERMISTOR (Liquid/Gas piping temperature detection) OPERATING PROCEDURE 1.Removing the LEV. (1) Remove the drainpan with procedure 8-3. (2) Remove the bottom plate 2 (fixing screws : six), and remove the plate.(Fig. 12) (3) Remove the LEV driving motor with a double spanner. (Fig.13) Be careful on removing heavy parts. PHOTOS fig.12 2.Removing the thermistors. (1) Remove the thermistors from the thermistor holders which are installed on the piping.(Fig.
Be careful on removing heavy parts. 8-5. HEAT EXCHANGER OPERATING PROCEDURE 1.Removing the heat exchanger. (1) Remove the drainpan with procedure 8-3. (2) Remove the bottom plate2 with procedure 8-4. (3) Remove the heat exchanger cover.(fixing screws : four) (Fig. 15) (4) Remove the heat exchanger.(fixing screws : three) (Fig. 16),(Fig. 17) PHOTOS fig.15 Heat exchanger cover fig16 fig.
8-6. CONTROL BOX INSIDE LAYOUT CNP CND X06 X05 CN82 SW14 SW12 SW1 Indoor unit contoller board X04 SW1 SWA SWC SW5 Address board CNT FAN3 CN62 L1 L2 G 1 2 Condenser (for motor) Transmission terminal bed Trans DSA board Power sourse terminal bed 8-7.
Issued in Aug. 2005 HWE05140 New publication, effective Aug.
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to change without notice.
