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17.5.14 Unspecified Voltage between Indoor and Outdoor (H95)
Malfunction Decision Conditions:
The supply power is detected for its requirement by the indoor/outdoor transmission.
Malfunction Caused:
1 Insufficient power supply.
2 Faulty outdoor unit PCB (noise filter/main).
Troubleshooting:
For safety reason and to prevent component breakdown,
always switch off the power before remove and connect the component.
Is the measured AC voltage
230 V?
Correct the power
supply.
- Defect in outdoor
unit PCB (noise filter).
- Replace the outdoor
unit PCB (noise filter).
- Defect in outdoor unit
PCB (main).
- Replace the outdoor unit
PCB (main).
- Defect in outdoor unit
PCB (main).
- Replace the outdoor unit
PCB (main).
- Defect in outdoor unit
PCB (main).
- Replace the outdoor unit
PCB (main).
- Connector poor contact.
- Correct the connection.
Check the AC voltage from outdoor unit PCB (noise filter):
- Turn OFF the power.
- Plug out connector AC-BLK, CN-BLK & CN-WHT from
the outdoor unit PCB (noise filter).
- Turn ON the power.
- Measure the AC voltage between AC-BLK & CN-WHT.
Check the AC voltage supply to outdoor unit PCB (main):
- Turn OFF the power.
- Reconnect connector AC-BLK, CN-BLK & CN-WHT to
the outdoor unit PCB (noise filter).
- Turn ON the power.
- Measure the AC voltage between AC-BLK & CN-WHT.
Is the measured AC voltage
230 V?
Check the rectification voltage
between DCP & DCN.
Is the measured voltage
between DCP & DCN~325 Vdc?
Check the DC filter (capacitor)
PCB connector connection.
Is the DC filter (capacitor) PCB
connector connection normal?
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Check the supply voltage.
Supply voltage as specified?
Summary of Contents for WH-ADC0916G9E8
Page 34: ...34 4 2 Outdoor Unit Air inlet rear Air inlet side Air inlet side Air outlet Air outlet ...
Page 40: ...40 8 Wiring Connection Diagram 8 1 Indoor Unit RY HT L1 RY HT L2 RY V3 RY V2 RY HT L3 ...
Page 100: ...100 Note Default value refer Location of Control and Component OPERATION ACTUAL ...