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Troubleshooting by Remote Controller Display / LED Display
SiBE28-804
214
Troubleshooting
5.38 “
U2
” Abnormal Power Supply Voltage
Remote
Controller
Display
U2
Applicable
Models
RZQ(S)71~140
Method of
Malfunction
Detection
Malfunction is detected according to the voltage of main circuit capacitor built in the inverter and
power supply voltage.
Malfunction
Decision
Conditions
When the voltage of main circuit capacitor built in the inverter and power supply voltage drop
(150-170 VAC) or when the power failure of several tons of ms or longer is generated.
* Remote controller does not decide the abnormality.
Supposed
Causes
Drop in power supply voltage (180 V or less)
Instantaneous power failure
Inverter open phase (Phase T)
Faulty main circuit wiring
Faulty outdoor inverter PC board
Main circuit parts damaged
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 ...