183
TROUBLESHOOTING
3. Failure Phenomenon
1) The System will not Operate
For diagnosis and repair, Refer to P306 and after, [Wiring Diagram of the Outdoor Unit]
Problem Possible Cause Specific Example Inspection and Treatment
No operation.
No display on the remote
controller.
Power supply system
failure
Error in connecting the power
supply wires
Refer to P198, 1)Check Power Supply
System
Contact failure / disconnection
Control unit failure Refer to P198, 2)Check Control Unit
Electrical leakage breaker is
OFF
Refer to P198, 3)Locate Electric
Leakage Positions
Remote controller system
failure
Contact failure / disconnection
Refer to P198, 4)Check Remote Con-
trol System
Remote controller failure
Remote controller display
functions but the system
does not operate
Communication system
failure
Wiring error in the communica-
tion line
Inspect communication line (wire dis-
connection, internal short circuit)
Contact failure / disconnection
Control system failure
Wiring error
Refer to P198, 2)Check Control UnitContact failure / disconnection
Control unit failure
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