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[ IX Troubleshooting ]
- 172 -
HWE09120 GB
1. Error Code
<Transmission power supply fault Error detail code FF (Outdoor unit)>
2. Error definition and error detection method
Transmission power output failure
3. Cause
1) Wiring failure
2) Transmission power supply cannot output voltage because overcurrent was detected.
3) Voltage cannot be output due to transmission power supply problem.
4) Transmission voltage detection circuit failure
4. Check method and remedy
Check the items in IX [4] -7- (2) Troubleshooting transmission power circuit of outdoor unit on all outdoor units in the same
refrigerant circuit.
<Transmission power supply fault other than error detail code FF (Outdoor unit)>
2. Error definition and error detection method
Transmission power reception failure
3. Cause
One of the outdoor units stopped supplying power, but no other outdoor units start supplying power.
4. Check method and remedy
Check the items in IX [4] -7- (2) Troubleshooting transmission power circuit of outdoor unit on all outdoor units in the same
refrigerant circuit.
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