Service and Parts Manual (2019, 2020, 2021, 2022)

40 PB
TROUBLESHOOTING
Compressor Or Outdoor Fan Does Not Operate At All
Figure 716
Compressor or outdoor fan does not operate at all.

Re-input after power of f
Set the desired temperature of remote controller to be lower by 2°C or
over than room temperature, and start the cooling operation.
Does not operate at all.
Repeat running/stopping
at a short time period.
Temperature sensor
open/short check
Thermistor and evaporator
surface contact check.-
Clearance is needed (5mm).
Connector check
(Contact & power)
Connector check
(Contact & power)
Disconnection/short
circuit check of
connecting wire
OLP/High pressure
switch/Low pressure
switch check
Electric wire connection
check for outdoor side
Operation mode
(dehumidifying) check
Compressor & motor
detail check
PCB assy check
Check:
Temperature sensing circuit
Relay output
Insulation resistance
Coil resistance
Capacitor capacity
Compressor OLP