TROUBLESHOOTING
Troubleshooting
■
Problem
•
Electrical Power Source Failure
•
Blow off Main
Switch Fuse
•
Blow off
No Activation of
Control
Unit Operation
Circuit Fuse
Indicator
•
Faulty Transformer of Indoor Unit
•
Disconnected Cable of Remote Control Panel to the Indoor Unit
•
Abnormality of Remote Control Switch
•
Incorrect
activation of
PCB
•
Faulty Indoor Fan Motor
•
Faulty Outdoor Fan Motor
•
Faulty magnetic switch for Outdoor Fan Motor
No Activation of
•
Faulty Compressor Motor of Compressor
Compressor and
•
Faulty Magnetic Switch for Compressor Motor
Fan Motor (In the
Case of Indicator
•
Incorrect activation of PCB
Activation of
Remote Control
Switch)
•
In case of 3~ unit installed
for first time, if an "05" code
is indicated on remote
control switch
•
Faulty Internal Thermostat for Indoor Fan Motor
•
Disconnected Wires between Indoor Unit and Outdoor Unit
Flickering of
Indicator and Lamp
•
Incorrect Activation of PCB
of "RUN" Switch
•
Tripped Float Switch for Drain (only in RCI Units)
•
Abnormality of Thermistor
No Speed Change
for Air Inlet Discharge Temp.
of Fan In spite of
•
Faulty Remote Control Switch
Adjustment
•
Faulty PCB of Indoor Unit
•
Abnormality of Thermistor
No Stopping
for Air Inlet Temperature
and Starting of
Compressor In
•
Faulty "TEMP" Switch of Remote Control Switch
spite of Adjusting
•
Faulty PCB of Indoor Unit
Thermostat
•
Faulty Cable of Remote Control Switch
All manuals and user guides at all-guides.com
Causes
•
Electrical Short Circuit to Earth
•
Faulty Compressor Motor
•
Faulty Indoor Fan Motor
•
Electrical Short Circuit between Different Phase
Wires
•
Electrical Short Circuit to Earth
•
Faulty Magnetic Switch for Compressor Motor
•
Disconnected Wire(s) to PCB of Indoor Unit
•
Faulty PCB of Indoor Unit
•
Disconnected Wire(s) to PCB
•
Faulty PCB of Indoor Unit
•
Phase protection Relay
•
Disconnected Wire(s) to the PCB
•
Faulty PCB of Indoor Unit
•
Faulty Thermistor
•
Disconnected Wire of Thermistor
•
Faulty Thermistor
•
Disconnected Wire of Thermistor
Solution
•
Wait for Recovering of Electrical Power Supply
•
Replace the Main Switch Fuse after Eliminating
Earthing
•
Replace the Compressor and the main Switch Fuse
•
Replace the indoor Fan Motor and the Main Switch
Fuse
•
Replace the Fuse
•
Replace the Fuse
•
Replace the magnetic Switch and the Fuse
•
Replace the Transformer
•
Replace the Cable
•
Check the connection of the Remote Control Cable.
Replace the Remote Control Switch.
•
Connect Wire(s) to the PCB
•
Replace the PCB of Indoor Unit
•
Replace the Indoor Fan Motor
•
Replace the Outdoor Fan Motor
•
Replace the magnetic switch of the Outdoor Unit
•
Replace the Compressor
•
Replace the magnetic switch
•
Connect Wire(s) to the PCB
•
Replace the PCB for Indoor Unit
•
Switch off the power supply of the unit, reverse 2 of
the phases, reapply the power and restart the unit
•
Replace the Indoor Fan Motor
•
Connect the Wires Correctly
•
Connect Wire(s) to the PCB
•
Replace the PCB for Indoor Unit
•
Adjust level of the Drain pan Repair or Replace the
Drain Discharge Mechanism. Remove the Clogged
Material
•
Replace the Thermistor
•
Connect the Wire to the Thermistor
•
Replace the Remote Control Switch
•
Replace the PCB of the Indoor Unit
•
Replace the Thermistor
•
Connect the Wire of Thermistor
•
Replace "TEMP" Switch of Remote Control Switch
•
Replace PCB of the Indoor Unit
•
Replace the Cable
PMGB0126A rev.2 - 11/2006
34