Lochinvar 1.5, 3 Troubleshooting continued, Description, Fault, Corrective Action, Fan Speed Low

				Service Manual
3	Troubleshooting (continued)
Table 3G (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Boiler Interface
	FAULT	DESCRIPTION		CORRECTIVE ACTION
			• Vent/air intake lengths exceed the maximum allowed
			lengths. Refer to Section 2 - General Venting of the
Fan Speed Low 1			Crest Installation and Operation Manual		for
			proper lengths.
	(will require a manual	The actual fan 1 RPM is 30% lower than	• Check for obstruction or blockage in the vent/air
reset once the condition		what is being called for.	intake pipes or at terminations.
has been corrected. Press			• Check the wiring connections at fan 1 and at		the
the RESET button on the
			main control board.
SMART TOUCH display
			• Replace the fan.
	to reset.)
		Blown fuse.	• Replace fuse F2 on the control board, see page 36
			of this manual.
			• Vent/air intake lengths exceed the maximum allowed
			lengths. Refer to Section 2 - General Venting of the
			Crest Installation and Operation Manual		for
Fan Speed Low 2			proper lengths.
	(will require a manual	The actual fan 2 RPM is 30% lower than	• Check for obstruction or blockage in the vent/air
reset once the condition		what is being called for.	intake pipes or at terminations.
has been corrected. Press			• Check the wiring connections at fan 2 and at		the
the RESET button on the
			main control board.
SMART TOUCH display
			• Replace the fan.
	to reset.)
		Blown fuse.	• Replace fuse F2 on the control board, see page 36
			of this manual.
			• Vent/air intake lengths exceed the maximum allowed
Fan Speed High 1			lengths. Refer to Section 2 - General Venting of the
			Crest Installation and Operation Manual		for
	(will require a manual		proper lengths.
reset once the condition		The actual fan 1 RPM is 30% higher than	• Check for obstruction or blockage in the vent/air
has been corrected. Press
		what is being called for.	intake pipes or at terminations.
the RESET button on the			• Check the wiring connections at the fan and at the
SMART TOUCH display
			main control board.
	to reset.)
			• Replace the fan.
			• Vent/air intake lengths exceed the maximum allowed
Fan Speed High 2			lengths. Refer to Section 2 - General Venting of the
			Crest Installation and Operation Manual		for
	(will require a manual		proper lengths.
reset once the condition		The actual fan 2 RPM is 30% higher than	• Check for obstruction or blockage in the vent/air
has been corrected. Press
		what is being called for.	intake pipes or at terminations.
the RESET button on the			• Check the wiring connections at the fan and at the
SMART TOUCH display
			main control board.
	to reset.)
			• Replace the fan.

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