MovinCool CM25 Service Manual - Manual (Page 76)

Repair Section
76
(1) Relay board
WARNING
• Do not touch the relay board until the green LED7 is turned off. Failure to follow this
warning may lead to electrical shock.
Removal of Relay Board
1) Disconnect the power at the source.
2) Loosen the bottom screw. (See page 69.)
3) Take out the nine (9) screws, and then remove the service panel. (See page 69.)
4) Disconnect all connectors from the relay board (18 connectors, 7 connections on the relay).
Refer to the figure “Relay board” to identify the relay connections and the connectors marked as
CN##. (To ensure easy reinstallation, be sure to label each connector wire as you remove them)
5) Take out the six (6) screws, and remove the relay board. The ground line for the relay board is
tightened together with the bottom right screw. (As shown in the illustration above, the relay
board and bracket assembly are replaced as a set.)
ILL00662-00
CN18
CN17
CN1
9
CN20 CN21
CN6
CN8 CN10 CN7
CN
9
CN1
1
CN5
LED1 LED2 LED3 LED4 LED5 LED6
CN12 CN13 CN14
CN4
CN2
CN3
CN1
CN106 CN107
to Output Signal
to Internal
Drain Pump Motor
to Electronic
Expansion Valve
to Wall Mounted
Controller
DIP Switch
to Condenser
Thermistor
to Condenser
Inlet Air
Thermistor (ODS)
to Condenser
Fan Motor
to Condenser
Fan Motor
to Noise Filter
Tighten Together
Ground Line
to Compressor
to Inductor Coil
to Evaporator
Fan Motor
LED 1~6
LED 7
to Evaporator
Fan Motor
to High-Pressure
Switch
to Compressor
Overlord Relay
to Float
Switch
to Stop
Switch
to Millivolt
Thermostat
to Evaporator
Inlet Air
Thermistor
to Evaporator Pipe
Inlet Thermistor and
Evaporator Outlet
Thermistor
CN103 CN101 CN102 CN104 CN105