Equipment Does Not Operate - Daikin SkyAir RZQ200 · 250C7Y1B Service Manual

Troubleshooting Based on Equipment Condition
2.2

Equipment does not Operate

Applicable Model All models of SkyAir series
Error Detection
Method
Error Generating
Condition
Possible Causes
Troubleshooting
84
Fuse blown or disorder of contact in operation circuit
Faulty operation switch or contact point
Faulty high pressure switch
Faulty magnetic switch for fan motor
Activation or fault of overcurrent relay for fan motor
Faulty overcurrent relay for compressor
Faulty compressor protection thermostat
Insufficient insulation in electric system
Faulty contact point of magnetic switch for compressor
Malfunction of compressor
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is
operation switch pressed
repeatedly?
NO
Is
thermostat changed and
reset again?
NO
Is power
switch OFF or fuse for
power switch
blown?
NO
Is there power failure?
NO
YES
Is
operation lamp on
LCD remote controller
flashing?
YES
NO
Wireless
remote controller
Is operation lamp on indoor
unit signal receiving
section flashing?
NO
Possibly faulty electric
component
SiBE26-701
YES
Turn on power switch or replace
fuse.
If high-harmonics circuit breaker
is not used on inverter
compressor, have the circuit
breaker replaced.
YES
Wait until power returns.
Normal. Equipment starts
operation 3 minutes later (3-min
standby).
YES
Diagnose based on error code
on remote controller.
Normal. Equipment starts
operation 3 minutes later (3-min
standby).
YES
Diagnose based on error code
on remote controller.
Check electric system.
For FCQ and FFQ, both the
indoor PC board and fan motor
may have problems at the same
time, be sure to check both of
them.
Troubleshooting