FEC AFC1100 - Manual (Page 10)

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9.8 Power voltage / Inside Power Supply
9.8.1 code 7-0 power voltage error / inside power supply abnormal
The controller internal power supply circuit is not working properly.
This abnormal is caused from only 3 items.
1. The controller internal power supply has failed
2. If the environment temperature is more than 113 degrees Fahrenheit ( 45 degree
centigrade ) without any air flow.
3. Source voltage is very close to the limit (253 volts ac) and the environment temperature is
also close to the limit.
RECOVERY:
1. Replace the controller
2. Provide additional cooling to the enclosure.
3. Verify and correct the source voltage as required.
Chapter 9: Troubleshooting (Rev. 8/98)
Page 9-10