Daikin RZQS100B7V3B [153/344] Troubleshooting

Daikin RZQS100B7V3B [153/344] Troubleshooting
Troubleshooting Based on Equipment Condition SiBE27-702
140 Troubleshooting
Troubleshooting
After vacuum drying, charge
correct amount of refrigerant.
Then, start operation again.
Malfunction of compressor
Power supply
voltage is within ±10 % of
specified voltage.
Is the
size of power cable
through total length
correct?
Is there any
temperature difference
between inlet and outlet of
expansion
valve?
Is there
any temperature
difference between suction
side and discharge side
of four-way
valve?
Turn the operation switch ON
and OFF, then wait at ON side.
Check on the cause why
overcurrent relay (for
compressor) or compressor
protection thermostat acted.
Does the unit
start operation after 3
minutes?
Is the
discharge side of
compressor hot after
unit stop?
Normal. Unit is in 3-min
standby mode
Contact power company.
Check compressor.
Replace power cable.
Expansion valve
malfunction
Four-way valve
malfunction
Check compressor.
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
[Electric system]
[Refrigerant circuit]
Not so hot
NO
(S1993)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

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