Monessen Hearth BBV400 Troubleshooting, Standing Pilot Ignition, Symptom, Possible Cause, Action

BBV, SBV Series Natural Vent Gas Fireplaces			TROUBLESHOOTING
STANDING PILOT IGNITION
SYMPTOM		POSSIBLE CAUSE	ACTION
1.	Spark igniter	A. Wire disonnected.	A. Open door and check to make sure wire is connected to
	will not light pi-		igniter.
	lot after repeat-	B. Defective igniter.	B. Check for spark at electrode and pilot. If no spark and elec-
	ed triggering of		trode wire is properly connected, replace pilot assembly.
	piezo.	C. No gas or low gas	C. Check remote/manual shut-off valve from fireplace. Low
		pressure.	pressure can be caused by bent lines, restricted lines, low
			pressure line pressure. Consult with plumber or gas supplier.
		D. No Propane/LPG in	D. Check Propane/LPG tank. Refill tank.
		tank.
2.	Pilot will not	A. Defective thermocou-	A. Check that thermocouple flame impinges on thermocouple.
	stay lit after	ple.	Clean and/or adjust pilot for maximum flame impingement.
	carefully fol-		Ensure that the thermocouple connection at the gas valve is
	lowing lighting		fully inserted and tight.
	instructions.		Disconnect the thermocouple from the valve, place one mil-
			livolt 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 15m V, replace pilot assembly.
		B. Defective valve.	B. If thermocouple is producing more than 15m V, replace faulty
			valve.
3.	Pilot burning,	A. Defective switch, wall	A. Check switch and wire for proper connection. Place jumper
	valve knob	switch, remote control	wires across terminals of switch. If burner comes on, replace
	tuned to “ON”,	or wire.	defective switch. If the switch is OK, repeat the same proce-
	switch is turned		dure on remote control. If burner comes on, replace remote
	to “ON” or “RS”,		control. Place jumper wire across wire at gas valves (termi-
	but burner will		nals marked TH and TP/TH). If burner comes on, wires are
	not ignite.		faulty or connections are bad. Replace wire.
		B. Pilot flame too small.	B. If pilot flame is not close enough to the thermopile, adjust
			pilot flame.
		C. Defective or malfunc-	C. Check thermopile wire connections to make sure all are tight
		tioning thermopile.	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 325m V, 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 me-
			ter reads greater than 175m V and the burner does not light,
			replace defective valve.
4.	Frequent pilot	A. Pilot flame may be too	A. Clean and adjust the pilot flame for maximum flame impinge-
	outage prob-	high or too low, caus-	ment on thermocouple.
	lem.	ing pilot safety to drop
		out.
5.	The pilot and	A. Inner vent pipe leaking	A. Check for flue product leak. Replace defective pipe section.
	main burner	exhaust gases back
	extinguish while	into system.
	in operation.	B. Horizontal vent improp-	B. Check horizontal-vent piping is running upward 1/4” per foot.
		erly pitched.	Do not run the pipe level or downward.
		C. Improper vent cap	C. Check for proper installation and freedom from debris or
		installation.	blockage.

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