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Troubleshooting Based on Equipment Condition
SiBE28-804
136
Troubleshooting
Troubleshooting
Wait for a while.
No abnormality
This is normal. Heating
operation will be conducted
after 2 or 3 minutes.
See page 44 "Test Run
Control" for details.
No abnormality
Additional unit installation
should be considered.
After vacuum drying, charge
correct amount of
refrigerant.
Check each item.
Check each item.
Check each item.
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
(S1995)
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Measure the temperature of
suction air and supply air.
Temperature difference =
Suction air temp. – Supply
air temp.
* Incorrect selection of model
* Affection of sunlight
* Affection of excessive fresh
air into room
Gas shortage possibly
generates trouble.
* Clogged air filter
* Soiled heat exchanger
* Malfunction of indoor fan
motor
(Refer error code “A6”)
* Refrigerant overcharge
* Soiled heat exchanger
* Short circuit of discharge air
* Disturbing item in air flow
* Malfunction of fan motor of
outdoor unit
(Refer error code “E7”.)
Does
the heat load
increase after installation
of the unit?
Is the unit in
defrost mode?
Is
the operation
current less than specified
level?
Does
indoor unit air flow
rate down?
Temperature
difference for heating
should be between 14
and 30˚C.
Is this
first starting after
installation?
* Insufficient compression of
compressor
* Insufficient circulation of
refrigerant
* Faulty expansion valve
Is the
level of high pressure
lower than normal
level?
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 ...