Sapphire Audio DV425TR owner manual Trouble Shooting, Problem, Possible Cause, Solutions

		DV425TR DIRECT VENT ROOM HEATER
	TROUBLE SHOOTING
Problem:	Possible Cause:	Solutions:
Pilot will not light.	Air in Gas Lines.	Bleed air from Gas Line.
	Wrong Inlet Pressure.	Check Gas Line pressure (7” Nat., 11” L.P.).
	Defective Spark	Replace Electrode if the Insulator is cracked or the Tip is
	Electrode.	corroded. Verify that the Spark Gap between the Pilot and
		the Electrodes correct.
	Defective Piezo Wire.	Replace Piezo Wire if Insulation is damaged, broken, or
		corroded.
	Safety Interlock	Allow Thermocouple to cool until the mV drops below the
	Function engaged.	hold - in requirements of the Safety Magnet (30 seconds or
		less). Relight Pilot.
Pilot will not hold.	Wrong Inlet Pressure.	Check Gas Line pressure (7” Nat., 11” L.P.).
	Pilot Adjustment Screw	After the Pilot has been lit for approximately [3] min., and only
	not adjusted properly.	the Thermo-generator wires connected to the Main Operator
		Head, measure the voltage across TPTH and TP. This Open
		Circuit voltage should be between 500mV and 750mV. Tune
		the Pilot Adjustment Screw until the mV reading falls within
		these parameters. Counter-clockwise increases the mV
		reading, Clockwise decreases it. Turn with a Wrench.
	Thermocouple or	With the Thermocouple and Thermo-generator Tips cool,
	Thermo-generator has	clean the upper 3/8” with a very fine Emery cloth.
	Film build-up on Tip.
	Electrical Resistance	Using a very fine Emery cloth, clean the Thermo-generator
	too high.	and Thermocouple connections at the Valve. Tighten
		Thermocouple into Valve, hand tight, adding a 1/4 turn
		with a wrench.
	Defective	Verify that the Thermocouple is not kinked or damaged.
	Thermocouple.	Check Open-Circuit voltage of Thermocouple. Voltage should
	(mV Plus System)	be between 18mv and 28mv. If voltage is less than 14mv,
		replace the Thermocouple.
	Defective Thermo-	After the Pilot has been lit for approximately [3] min.,and only
	generator.	the Thermo-generator wires connected to the Main Operator H
	(millivolt System)	Head, measure the voltage across TPTH and TP. This Open
		Circuit voltage should be between 500mV and 750mV. Tune
		the Pilot Adjustment Screw until the mV reading falls within
		these parameters. Counter-Clockwise increases mV reading,
		Clockwise decreases it.
	Defective Safety Magnet	Verify operation of Safety Magnet in the following manner:
	(mV Plus Systems).	(A) Depress and hold the Pilot Button.
		(B) Verify Open-Circuit Thermocouple voltage as described
		in previous Step.
		(C) Reconnect Thermocouple to the Valve.

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