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ESIE05-04
Troubleshooting
Part 3 – Troubleshooting
3–13
3
3
4
5
1
Troubleshooting
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.
Wait for a while.
No abnormality
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
Temperature
difference for heating
should be between 14
and 30˚C.
Is the unit
in defrost mode?
Is the operation
current less than specified
level?
Does the
heat load increase after
installation of the
unit?
YES
YES
YES
YES
YES
YES
∗
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”, “H7”)
∗
Insufficient compression of
compressor
∗
Insufficient circulation of
refrigerant
∗
Faulty expansion valve
NO
NO
NO
Does indoor
unit air flow
rate down?
NO
Is the level
of high pressure lower
than normal level?
NO
NO
(S1995)
Summary of Contents for FHQ100BUV3B
Page 1: ...Service Manual ESIE05 04 R 410A Sky Air Indoor...
Page 2: ......
Page 20: ...ESIE05 04 1 2 Part 1 System Outline 3 1 1 5...
Page 62: ...General Outline ESIE05 04 1 44 Part 1 System Outline 3 1 1 4 5...
Page 78: ...ESIE05 04 1 60 Part 1 System Outline...
Page 112: ...Wiring Diagrams ESIE05 04 1 94 Part 1 System Outline 3 1 1 4 5...
Page 140: ...ESIE05 04 2 2 Part 2 Functional Description 3 1 2 5...
Page 164: ...ESIE05 04 3 2 Part 3 Troubleshooting 3 1 3 5...
Page 206: ...Error Codes ESIE05 04 3 44 Part 3 Troubleshooting 3 1 3 4 5...
Page 224: ...Additional Checks for Troubleshooting ESIE05 04 3 62 Part 3 Troubleshooting 3 1 3 4 5...
Page 226: ...ESIE05 04 4 2 Part 4 Commissioning and Test Run 3 1 4 5...
Page 252: ...ESIE05 04 5 2 Part 5 Disassembly and Maintenance 3 1 5...
Page 384: ...Disassembly and Maintenance ESIE05 04 5 134 Part 5 Disassembly and Maintenance 3 1 5 5...
Page 390: ...ESIE05 04 vi Index 3 1 4 5 W Wiring diagrams Indoor units k 1 61...