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Troubleshooting by Remote Controller Display / LED Display
SiBE28-804
202
Troubleshooting
Troubleshooting
Is
instantaneous voltage
drop generated?
Is the
compressor coil
disconnected or is the
insulation
defective?
Turn the main power supply
off, and then disconnect the
connection between the
compressor and inverter.
Continuity check in the
power transistor (IGBT)
Is the continuity
normal?
Is the stop valve open?
Check the
installation conditions.
Check the power
supply voltage.
Is the
inverter
output voltage
generated approximately
at the same increasing speed
for each phase after
turning on again?
(
∗
) (U-V, V-W,
W-U)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Open the stop valve.
Replace the compressor.
Correct the power supply.
Compressor inspection
Inspect according to the
diagnosis procedure for
abnormal noise, vibration,
operating status, etc. of the
compressor.
RZQ71C7V1B,RZQS71
·100
C7V1B
RZQ100~140,RZQ
S125·140
C7V1B
Instantaneous overcurrent
detection value
32.0A
51.7A
YES
NO
NO
YES
YES
NO
∗
Approximate value
NO
YES
NO
YES
* 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.
Check 11
RZQ71C7, RZQS71·100C7:
Replace the outdoor PC
board (A2P).
RZQ100~140C7,
RZQS125·140C7:
Replace the inverter PC
board (A2P).
RZQ71C7, RZQS71·100C7:
Replace the outdoor PC
board (A2P).
RZQ100~140C7,
RZQS125·140C7:
Replace the inverter PC
board (A2P).
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 ...