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Troubleshooting by Remote Controller Display / LED Display
SiBE28-804
204
Troubleshooting
Troubleshooting
Turn the main power supply
off, and then disconnect the
connection between the
compressor and inverter.
Is the
secondary
current of the inverter
higher than
∗
A (see
below) for each
phase?
Is the
inverter
output voltage
generated
approximately at the same
increasing speed on each
phase after turning
on again? (
∗
)
(U-V, V-W,
W-U)
Continuity check in the
power transistor (IGBT)
Is the continuity
normal?
YES
NO
NO
YES
NO
* When operating compressor
with compressor output line
disconnected, the compressor
stops due to malfunction after
elapsed time of 5 seconds.
Therefore, check the voltage
increase for 5 seconds.
Cooling
Heating
Cooling
Heating
Detection value
13.8A × 260 seconds
14.8A × 260 seconds
31A × 5 seconds or 21.1A × 260 seconds
Compressor overload
Inspection of the compressor
and refrigerant system is
required.
Compressor inspection
Inspect according to the
diagnosis procedure for
abnormal noises, vibration,
operating status, etc.
of the compressor.
∗
Electronic thermal detection value
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
RZQ71C7V1B,RZQS71
·100
C7V1B
RZQ100~140,RZQ
S125·140
C7V1B
Replace the inverter PC
board (A2P).
Replace the inverter PC
board (A2P).
Check 11
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 ...