After Equipment Shuts Down, It Cannot Be Restarted For A While - Daikin Skyair FHC35K Service Manual

Si-71A
3.5

After Equipment Shuts Down, It cannot be Restarted for a While.

Applicable Model
All models of Skyair series
Error Detection
Method
Error Generating
Condition
„ Overcurrent relay (for compressor)
Possible Cause
„ Compressor protection thermostat
„ Overcurrent relay may act due to the following reasons
„ Compressor protection thermostat may act due to the following reasons
Troubleshooting
Troubleshooting
Lower voltage of power supply
Excess level of high pressure
Insufficient capacity of power cable
Malfunction of compressor
Internal leakage of four-way valve (There is no difference between inlet and outlet temperature)
Insufficient compression of compressor
Incorrect refrigerant
Faulty expansion valve
Insufficient circulation of refrigerant
Turn the operation switch
ON and OFF, then wait
at ON side.
Does the unit
YES
start operation after
3 minutes?
NO
Is the
discharge side of
NO
compressor hot after
unit operation
stop?
YES
Check on the cause why
overcurrent relay (for
compressor) or
compressor protection
thermostat acted.
Troubleshooting Based on Equipment Condition
[Electric system]
Power supply
voltage is within
±10 % of specified
voltage.
YES
Not so hot
Is the size
of power cable
through total length
correct?
YES
[Refrigerant circuit]
After vacuum drying,
charge correct amount of
refrigerant. Then, start
operation again.
Is there
any temperature
difference between
inlet and outlet of
expansion
valve?
YES
Is there
any temperature
difference between
suction side and
delivery side of
four-way
valve?
YES
Malfunction of compressor
Normal. Unit is in 3-min standby mode
NO
Contact power company
Check compressor
NO
Replace power cable
NO
Expansion valve malfunction
NO
Four-way valve malfunction
Check compressor
(SF034)
85