Equipment Does Not Operate - Daikin RZQ Series FCQ20EVA Service Manual

Symptom-based Troubleshooting
2.2

Equipment does not Operate

Applicable Model All models of TopAir series
 Fuse blown or disorder of contact in operation circuit
Supposed
 Defective operation switch or contact point
Causes
 Defective high pressure switch
 Defective magnetic switch for fan motor
 Activation or fault of overcurrent relay for fan motor
 Defective overcurrent relay for compressor
 Defective compressor protection thermostat
 Insufficient insulation in electric system
 Defective contact point of magnetic switch for compressor
 Defective compressor
 Defective remote controller or low batteries (wireless)
 Incorrect address setting of wireless remote controller
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.
switch OFF or fuse for power
Is there power failure?
switch pressed repeatedly?
Is the thermostat changed
and reset again?
operation lamp on
LCD remote controller
Is the operation lamp on
indoor unit signal receiving part
Defective electric component
75
Is the power
YES
switch blown?
NO
YES
NO
Is the operation
YES
NO
YES
NO
Is the
YES
blinking?
NO
YES
blinking?
NO
SiME281501E
Turn ON the power switch or
replace the fuse.
If high-harmonics circuit breaker
is not used on the inverter
compressor, replace the circuit
breaker.
Wait until power returns.
Normal. Equipment starts
operation after 3 minutes (3
minutes standby).
Normal. Equipment starts
operation after 3 minutes (3
minutes standby).
Diagnose based on error code
on remote controller.
Diagnose based on error code
on remote controller.
Check the electric system.
Service Diagnosis