28
Check code
Abnormal point and detection method
Cause
Countermeasure
PL
Abnormal refrigerant circuit
During Cooling, Dry, or Auto Cooling
operation, the following conditions are
regarded as failures when detected for 1
second.
a) The compressor continues to run for 30
or more seconds.
b) The liquid pipe temperature or the
condenser/evaporator temperature is
75°C or more.
These detected errors will not be
cancelled until the power source is
reset.
1
Abnormal operation of 4-way
valve
2
Disconnection of or leakage in
refrigerant pipes
3
Air into refrigerant piping
4
Abnormal operation (no rotation)
of indoor fan
• Defective fan motor
• Defective indoor control board.
5
Defective refrigerant circuit
(clogging)
1
When this error occurs, be sure to replace
the 4-way valve.
2
Check refrigerant pipes for disconnection or
leakage.
3
After the recovery of refrigerant, vacuum dry
the whole refrigerant circuit.
4
Refer to section "9-6-2. DC Fan motor (fan
motor/indoor controller board)".
5
Check refrigerant circuit for operation.
To avoid entry of moisture or air into
refrigerant circuit which could cause
abnormal high pressure, purge air in
refrigerant circuit or replace refrigerant.
Pb
1
Defective fan motor
2
Defective indoor controller board
12
Refer to "9-6-2. DC Fan Motor (fan motor/
indoor controller board)".
Fan motor trouble
OCH650
Summary of Contents for PLA-ZM100EA.UK
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