Troubleshooting – Lochinvar Power-fin 1701 User Manual
Page 42
3
Troubleshooting
42
Service Manual
FAULT
DESCRIPTION
CORRECTIVE ACTION
Service Blk
While the unit is in Service Mode, the outlet
temperature has exceeded 185°F (85°C).
• Establish a heating load to remove heat from the
system.
• Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the appliance is piped properly into the
system. Refer to Section 4 - Water
Connections of the Power-fin Installation and
Operation Manual for the proper piping methods.
• Check 120 VAC to the pump motor on a call for
heat. If voltage is not present, check the wiring
leading to the main control board. Replace the main
control board if necessary.
• If 120 VAC is present on a call for heat and the
pump is not operating, replace the pump.
Low Voltage
120 VAC input to the main control board has
dropped below 80 VAC.
• Check 120 VAC supply to the transformer.
• Check wiring connections at the low voltage terminal
strip.
• Check the wire size/length to remote devices.
• Replace the main control board.
Watch Dog Error
The main control board has detected an
internal fault.
• Replace the main control board.
Write EEProm
The main control board has detected an
internal fault.
• Replace the main control board.
Program EEProm
The main control board has detected an
internal fault.
• Replace the main control board.
CRC Parameters
The main control board has detected an
internal fault.
• Replace the main control board.
No Error Stored
The main control board has detected an
internal fault.
• Replace the main control board.
Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Operator Interface