Sapphire Audio DV425TR owner manual Trouble Shooting

DV425TR DIRECT VENT ROOM HEATER

TROUBLE SHOOTING (continued)

PROBLEM	POSSIBLE CAUSE:	SOLUTIONS:
Pilot will not Hold	Defective Magnet	If the mV reading is above 6mV and the Safety Magnet does
(Cont.)	(mV Plus systems).	not hold, replace the Valve.
		(E) If closed-Circuit mV reading is the same as the Open-
		Circuit reading, the Coil is electrically "Open". Replace the
		Valve.
	Defective Safety Magnet	Verify operation of Safety Magnet in the following manner:
	(milliVolt System)	(A) Remove all Wires from the Terminals of the Main
		Operator.
		(B) Measure the electrical voltage between the Termihals
		TPTH and TP. If the voltage is above 110mV and the Safety
		Magnet does not hold, replace the Valve.
Pilot Drops Out.	Pilot Orifice blocked.	Replace Orifice with a new Orifice of the exact size and type.
	Wrong Pilot Orifice.	Replace the Orifice with a new Orifice supplied specifically
		for the appliance and gas in question.
No gas to Main	Low gas pressure to	Check Gas Pressure (&" NG/11"LP)
Burner	appliance.
	Pilot not lit.	Light Pilot and wait for Thermo-generator to heat up
		sufficiently to power the Main Operator. If Pilot fails to light,
		hold, hold, refer to the above sections.
	Control Knob in the "ON"	Rotate "OFF/PILOT/ON" Control Knob to the "ON" position.
	position.
Thermostat/Wall	Thermostat not in the "ON"	Turn Thermostat "ON" and then adjust Temperature Control
Switch will not	position.	to call for heat.
cycle the Main
Burner.	Thermo-generator out-put	If unable to meet minimum requirements, replace the
	voltage not within design	Thermo-generator.
	parameters.
	Defective Thermostat or	(A) With the apilot adjusted properly, place a Jumper Wire
	Thermostat Wiring.	between TPTH and TH. Take a mV reading across the TPTH
		and TH Terminals of the Valve. This Closed Circuit voltage
		should not fall below 300mV. Record reading.
		(B) Remove Jumper wire from the TPTH and TH conections
		and connect the Thermostat Wires to the same Terminals.
		Closed Circuit voltage as described in the previous Step. If
		the mFV reading drops below 150mV, excessive resistance
		exists in the Thermostat Circuit and must be isolated and
		eliminated.
	Defective Wall Switch.	Repeat the above troubleshooting items covered under
		"Defective Thermostat or Thermostat Wiring" except,
		substitute the words "Wall Switch" where the word
		Thermostat appears in the instructions.

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