Monessen Hearth SBV400, SBV500, BBV400 manual Troubleshooting, Standing Pilot Ignition

TROUBLESHOOTING

STANDING PILOT IGNITION

SYMPTOM		POSSIBLE CAUSE		ACTION
1.	Spark ignitor	A. Wire disconnected.		A. Open door and check to make sure wire is connected to ignitor.
	will not light			B.	Check for spark at electrode and pilot. If no spark and electrode
	pilot after	B.	Defective ignitor.		wire is properly connected, replace pilot assembly.
	repeated trig-	C.	No gas or low gas pressure.	C. Check remote/manual shut off valve from fireplace. Low pres-
	gering of piezo.				sure can be caused by bent lines, restricted lines, low pressure
					line pressure. Consult with plumber or gas supplier.
		D. No Propane/LPG in tank		D. Check Propane/LPG tank. Refill tank.
2.	Pilot will not	A. Defective thermocouple		A. Check that thermocouple flame impinges on thermocouple.
	stay lit after				Clean and/or adjust pilot for maximum flame impingement.
	carefully fol-				Ensure that the thermocouple connection at the gas valve is fully
	lowing lighting				inserted and tight.
	instructions.				Disconnect the thermocouple from the valve, place one millivolt
					lead wire on the tip of the thermocouple and the other meter lead
					wire on the thermocouple copper lead. Start the pilot and hold
					the valve knob in. If the millivolt reading is less than 15 mV,
					replace pilot assembly.
		B.	Defective valve	B.	If thermocouple is producing more than 15 mV, replace faulty
					valve.
3.	Pilot burn-	A. Defective switch, wall switch,		A. Check switch and wire for proper connection. Place jumper
	ing, valve		remote control or wire		wires across terminals of switch. If burner comes on, replace
	knob turned to				defective switch.If the switch is OK, repeat the same procedure
	“ON”, switch				on remote control If burner comes on, replace remote control.
	is turned to				Place jumper wire across wire at gas valves (terminals marked
	“ON” or “RS”,				TH and TP/TH). If burner comes on, wires are faulty or connec-
	but burner will				tions are bad. Replace wire.
	not ignite.	B.	Pilot flame too small	B.	If pilot flame is not close enough to the thermopile, adjust pilot
					flame.
		C.	Defective or malfunctioning ther-	C.	Check thermopile wire connections to make sure all are tight
			mopile		and that the thermopile is fully inserted into pilot assembly.
					Check thermopile with a millivolt meter. Connect leads to TP
					and TP/TH terminals on the control valve. If meter reading is
					below 325 mV, replace pilot assembly.
		D. Defective valve		D.	Turn valve knob to “On” and switch to “ON.” Take a reading at
					the thermopile leads (TP & TP/TH) on the valve. If the meter
					reads greater than 175 mV and the burner does not light, replace
					defective valve
4.	Frequent pilot	A. Pilot flame may be too high or too		A. Clean and adjust the pilot flame for maximum flame impinge-
	outage prob-		low, causing pilot safety to drop		ment on thermocouple.
	lem.		out
5.	The pilot and	A. Inner vent pipe leaking exhaust		A. Check for flue product leak. Replace defective pipe section.
	main burner		gases back into system
	extinguish	B.	Horizontal vent improperly	B. Check horizontal-venting piping is running upward 1/4" per
	while in opera-		pitched		foot. Do not run the pipe level or downward.
	tion	C.	Improper vent cap installation	C. Check for proper installation and freedom from debris or block-
					age.

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