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
		• Vent/air intake lengths exceed the maximum allowed
		lengths. Refer to Section 2 - General Venting of the
Blower RPM’s		SYNC Installation and Operation Manual for
		proper lengths.
Too High		• Check for obstruction or blockage in the vent/air
(will require a manual	The actual fan rpm is 30% higher than what
reset once the condition	is being called for.	intake pipes or at terminations.
has been corrected. Press		• Check the wiring connections at the fan and at the
the RESET button on the
display to reset.)		main control board.
		• Replace the fan.
		• Replace the main control board.
Sensor Open		• Check the sensors and their associated wiring.
(will require a manual		Repair or replace the sensor or wiring if damaged.
reset once the condition	Either the inlet water or outlet water	• Measure the resistance of the sensors and compare
has been corrected. Press	temperature sensor has been disconnected.	the resistance to the tables on page 45	of this
the RESET button on the		manual.
display to reset.)
		• Replace the sensor if necessary.
Sensor Shorted		• Check the sensors and their associated	wiring.
		Repair or replace the sensor or wiring if damaged.
(will require a manual
	Either the inlet water or outlet water	• Measure the resistance of the sensors and compare
reset once the condition
has been corrected. Press	temperature sensor has been shorted.	the resistance to the tables on page 45 of this
the RESET button on the		manual.
display to reset.)		• Replace the sensor if necessary.
Flue Sensor		• Check the sensor and its associated wiring. Repair
		or replace the sensor or wiring if damaged.
Open / Removed		• Measure the resistance of the sensors and compare
(will require a manual
	The flue sensor has been disconnected or	the resistance to the tables on page 45 of this
reset once the condition
has been corrected. Press	removed from the flue.	manual.
the RESET button on the		• Replace the sensor in flue.
display to reset.)
		• Replace the sensor if necessary.
Flue Sensor		• Check the sensor and its associated wiring.	Repair
Shorted		or replace the sensor or wiring if damaged.
(will require a manual		• Measure the resistance of the sensors and compare
reset once the condition	The flue sensor has been shorted.	the resistance to the tables on page 45 of this
has been corrected. Press
the RESET button on the		manual.
display to reset.)		• Replace the sensor if necessary.
Louver Proving
Switch		• Check function of remote devices.
(will require a manual
	An optional remote proving switch is not	• Check for loose or misplaced jumper if proving switch
reset once the condition
has been corrected. Press	making.	is not installed.
the RESET button on the
display to reset.)
	Sensors equipped with an internal limit (such	• Check the tank temperature.
Tank Open	as the Lochinvar Squire® Indirect Tank), the	• Repair or replace the sensor wiring if damaged.
	limit has opened due to temperature (195°F)	• Replace the sensor if necessary.
	or the sensor has become disconnected.

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