Sapphire Audio DV425TR TROUBLE SHOOTING continued, Problem, Possible Cause, Solutions, Thermostat

DV425TR DIRECT VENT ROOM HEATER

TROUBLE SHOOTING (continued)

Problem:	Possible Cause:	Solutions:
Thermostat/	Excessive Wire	Make sure that all mV connections are made using wire of
Wall Switch	Resistance.	the proper size.
will not cycle	Valve Wired	The Thermo-generator leads must be connected to the
the Main	Incorrectly.	TPTH and TP connections of the Main Operator.
		Thermostat Wires must be connected to
Burner (Cont.)
	the TPTH and TP	Terminals of the Valve.
Main Burner lights
Main Operator Coil is	Verify electrical resistance	of the Main Operator the following
while in the	defective.	manner:
Pilot position.		(A) Remove ALL WIRES! from the Operator Head.
		(B) With an Ohm meter, measure electric resistance between
		the TP and TH Terminals. If the resistance does not fall
		within specification, replace the Valve.
	Debris on Seat of	Replace Valve.
	Main Valve.
	Main Seat blown out	Replace Valve.
	as a result of exposing
	an LPG Gas Valve to
	an unregulated line
	pressure in excess

02/01 Page 56 250-5533