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Troubleshooting by Remote Controller Display / LED Display
SiBE28-804
206
Troubleshooting
Troubleshooting
Is the
difference between
high and low pressure
before startup not more
than 0.2MPa?
Turn the main power supply
off, and then disconnect the
connection between the
compressor and inverter.
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?
Is the stop valve open?
Check the
installation conditions.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check 11
NO
YES
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.
Open the stop valve.
Insufficient pressure equalization
Check refrigerant system.
NO
YES
Compressor inspection
Inspect according to the diagnosis
procedure for abnormal noises,
vibration, operating status, etc. of
the compressor.
Replace the inverter PC
board (A2P).
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 ...