33
PMGB0126A rev.2 - 11/2006
English
TROUBLESHOOTING
17. TROUBLESHOOTING
17.1. ALARM CODES
If RUN lamp flashes for 2 seconds, there is a failure in
transmission between Indoor Unit and Remote Control
Switch. Possible causes are:
Remote Cable broken
Contact Failure in Remote Control Cable
IC or Microcomputer defective
In any case, ask your service contractor
-
-
-
-
In RUN lamp flashes 6 times (5 seconds) with unit number
and alarm code displayed:
NOTE:
The alarm code displayed (see table below) and ask your
service contractor
-
Alarm Codes
Code Category Contents of Abnormality Leading Cause
Indoor unit Safety Device of the Indoor Unit is tripped Failure of Fan Motor, Float Switch PCB, Relay
Outdoor Unit Safety device of outdoor unit is tripped High pressure Switch, failure of fan Motor
Transmission
Abnormality between Indoor and Outdoor Unit (or Indoor)
Incorrect wiring, failure of PCB, tripping of Fuse.
Power supply off.
Abnormality of Power source wiring Reverse phase incorrect wiring
Cycle Abnormality high temperature in the top of comp.
Insufficient Refrigerant. Ref-leakage, clogging
capillary
Sensor in Indoor Unit
Inlet Air Thermistor
Failure of Thermistor, sensor, connection
Outlet Air Thermistor
Freeze protection Thermistor
Tripping of Protection Device for Fan Motor
Failure of Fan Motor
Sensor on Outdoor Unit
Top Compressor Thermistor
Failure of Thermistor, sensor, Connection
Outdoor Air Thermistor
Evaporating thermistor (defrosting)
System
Incorrect Setting of Outdoor and Indoor Unit Incorrect Setting of Capacity Code.
Incorrect Setting in Indoor/Outdoor Unit No.
Existence of the same Indoor Unit No. in the same
refrigerant cycle
Abnormality of Protective Circuit in Outdoor Unit
Failure of Indoor Unit PCB. Incorrect Wiring
Connection to PCB in Outdoor Unit.
Abnormality of Running Current at Compressor
Overcurrent, Melted Fuse or failure of current
sensor.
Pressure
Excessive Overload during Cooling Operation
Heat Exchanger Airflow obstacle, short circuit and
locked fan motor.
Excessive Overload during Heating Operation Heat Exchanger Airflow obstacle, short circuit.
Low pressure Decrease Protection Activating Insuficient refrigerant. Refrigerant Leak (Hex Lock)
■
To Next Page
Loading...
