Lochinvar 1.3 Troubleshooting continued, Fault, Description, Corrective Action, Service Manual

Service Manual

3 Troubleshooting (continued)

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

FAULT	DESCRIPTION	CORRECTIVE ACTION
Internal Fault	The main control board has detected an	• Replace the main control board.
	internal fault.
Writing to	The main control board has detected an	• Replace the main control board.
Memos	internal fault.
CRC Parameters	The main control board has detected an	• Replace the main control board.
	internal fault.
No Error Stored	The main control board has detected an	• Press	the RESET button on the			SMART
	internal fault.	TOUCH display panel.
		• Inspect the heat exchanger. Reference page 40 of
		this manual for the procedure on how to clean the
		flue side of the heat exchanger.
Flue Temp		• Inspect the flue sensor and associated wiring.
	The stack temperature has exceeded the	Measure the resistance of			the flue sensor and
Shutdown		compare to Table 3C on page 45 of this manual.
	set parameters for the boiler.
		Replace the sensor if necessary.
		• Verify that the vent/air intake pipes are properly
		installed and that there are no obstructions.
		• Replace the main control board.
		• Verify that the system is full of water and that all air
		has been properly purged from the system.
		• Verify that the boiler is piped properly into the heating
		system. Refer to Section 6 - Hydronic Piping of the
		SYNC	Installation	and	Operation	Manual
		for the proper piping methods for the SYNC boiler.
		• Check for voltage to the boiler pump motor on a call
Delta T	The temperature rise across the heat	for heat. If voltage is not present, check the wiring
		back to the pump relay. Replace the pump relay if
Shutdown	exchanger has exceeded the set parameters
		necessary.
	for the boiler.
		• If 120 VAC is present on a call for heat and the boiler
		pump is not operating, replace the pump.
		• Verify that the boiler pump is set to the proper speed
		or that the pump is the proper size. Reference
		Section	6 - Hydronic Piping of the			SYNC
		Boiler Installation and Operation Manual for boiler
		pump specifications.
		• Verify that the system is full of water and that all air
		has been properly purged from the system.
		• Verify that the boiler is piped properly into the heating
		system. Refer to Section 6 - Hydronic Piping of the
Outlet Temp		SYNC	Installation	and	Operation	Manual
	Outlet water temperature has exceeded the	for the proper piping methods for the SYNC boiler.
Shutdown		• Check for voltage to the boiler pump motor on a call
	maximum outlet water temperature.	for heat. If voltage is not present, check wiring back
		to the pump relay. Replace the pump relay if
		necessary.
		• If 120 VAC is present on a call for heat and the boiler
		pump is not operating, replace the pump.

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