Mitsubishi Electric Mr. Slim PEA Series Technical & Service Manual page 23

7-6. TROUBLE CRITERION OF MAIN PARTS
PEA-A12AA
PEA-A18AA
Part name
Room temperature
thermistor
(TH1)
Pipe temperature
thermistor/liquid
(TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Wiring diagram
Check method and criterion
Measure the resistance with a tester.
(Part temperature 10°C(50°F) ~ 30°C(86°F))
Normal
8kΩ~20kΩ
Vm (Power supply for motor)
Vcc (Power supply for control)
Regulator
Vsp (Speed command voltage)
PG (Pulse output for rotation)
GND
23
Abnormal
Opened or short-circuited
Motor
Board with build-in motor
Hall IC
Power
device
Current detecting resistor
Motor winding
Pre
driver