SiBE28-804
Troubleshooting by Remote Controller Display / LED Display
Troubleshooting
209
5.34 “
P1
” Open Phase or Power Supply Voltage Imbalance
Remote
Controller
Display
P1
Applicable
Models
RZQ(S)71~140
Method of
Malfunction
Detection
Malfunction is detected according to the voltage waveform of main circuit capacitor built in
inverter.
Malfunction
Decision
Conditions
When the aforementioned voltage waveform becomes identical with the waveform of the power
supply open phase.
Supposed
Causes
Open phase
Voltage imbalance between phases
Faulty outdoor inverter PC board
•
Faulty main circuit capacitor
•
Power unit (Disconnection in diode module)
•
Faulty Magnetic Relay (K11R, K12R)
•
Improper main circuit wiring
Troubleshooting
Check
LED on the
outdoor unit PC board
(Open phase?)
Open
phase of power supply
voltage?
Is the voltage
imbalance between phases
large?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the outdoor PC board
(A2P).
Other factors than open
phase
Field factors
Field factors
NO
YES
YES
NO
YES
NO
(Note)
Target : ±10V between phases,
R-S, S-T, T-R
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 ...