Lochinvar 402 - 2072 Troubleshooting, Fault, Description, Corrective Action, Watch Dog Error

Copper-fin II/IIE Boiler, Water Heater and Pool Service Manual

3 Troubleshooting

Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Operator Interface

FAULT		DESCRIPTION						CORRECTIVE ACTION
Watch Dog Error	The	main control	board	has	detected	an	•	Cycle main power.
	internal fault.						• Replace the main control board.
Write EEProm	The	main control	board	has	detected	an	•	Cycle main power.
	internal fault.						• Replace the main control board.
Program EEProm	The	main control	board	has	detected	an	•	Cycle main power.
	internal fault.						• Replace the main control board.
CRC Parameters							•	Cycle main power.
	The	main control board has detected an					• Replace the main control board.
	internal fault.
							• Restore default parameters using the PC program.
							•	Press RESET.
No Error Stored	The	main control board has detected an					•	Cycle main power.
	internal fault.
							• Replace the main control board.

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