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Troubleshooting Based on Equipment Condition
SiBE28-804
132
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.
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...