Desa VM42P Connected, replace ignitor, Electrode at pilot spark at, If pilot lights, an improper

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TROUBLESHOOTING

Continued

OBSERVED PROBLEM	POSSIBLE CAUSE	REMEDY
Pilot goes out when wall switch	1. Millivolt output on thermo-	1. Replace thermopile
is ON	pile too high

Spark ignitor will not light pilot	1. Defective ignitor (no spark at	1. Check for spark at the elec-
after repeated triggering of red	electrode)	trode and pilot; if no spark
button		and electrode wire is properly
		connected, replace ignitor
	2. Defective pilot or misaligned	2. Using a match, light pilot. If
	electrode at pilot (spark at	pilot lights, turn off pilot and
	electrode)	trigger the red button again.
		If pilot lights, an improper
		gas/air mixture caused the
		improper lighting and a longer
		purge period is recommended.
		If pilot will not light, check
		gap at electrode and pilot. Gap
		should be 1/8" to have a strong
		spark. If okay, replace pilot
	3. No gas or low gas pressure	3. A) Check remote shut off
		valves from ﬁreplace. Usually
		there is a valve near the ﬁre-
		place and sometimes there is a
		valve near the main. There can
		be more than one (1) valve be-
		tween the ﬁreplace and main
		B) Low pressure can be caused
		by a variety of situations such
		as bent line, or gas supplier
	4. If using propane/LP gas, no	4. Check propane/LP supply
	propane/LP gas in tank	and contact local propane/LP
		supplier

Fireplace produces a clicking/	1. Metal expanding while heating	1. This is common with most
ticking noise just after burner is	or contracting while cooling	ﬁreplaces. If noise is exces-
lit or shut off		sive, contact qualiﬁed service
		person

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Contents Natural GAS PROPANE/LP GASTable of Contents Safety Information High trafﬁc areas Windy or drafty areasUnpacking IntroductionBefore YOU Begin Modiﬁcation of the appliance or any of the componentsPossible Locations for Installing Appliance Selecting LocationProduct Specifications M42B,H, VM42B,H10.5 in. WC 2.66 kPa Oriﬁce SizePRE-INSTALLATION Preparation ClearancesMantel Clearances and Wall DetailsRough Opening for Installing Wall FramingVenting Installation Installing Transition Pipe and Starter Collarﬂue connection must be made using listed Vent Piping Starter Collar Transition Pipe Vent CollarTypical B-Vent Conﬁguration Roof PitchInstallation Wall Switch InstallationChecking for Proper Venting Optional Wireless HAND-HELD Remote Control Installation Installing ReceiverVolt Battery Clip Terminal Wires Receiver Receiver Plastic Mounting Clips Mounting BracketInstalling 9-Volt Battery in Hand-Held Remote Control Unit GAS Line HOOK-UPM36PB,H M42PB,H Ember and PAN Material Placement LOG Placement for M36, M36P, VM36 and VM36P Models Grate Pan and Ember Material Burner PanLog Notch Log 3 Log Notches LogLOG Placement for M42, M42P, VM42 and VM42P Models Notch Log Log 2A Log 2BLog Notches Log Notch Log 2BInstalling Optional Glass Door Accessory Combustion AIR KIT Model AK4 OptionalAppliance Enclosure Opening Vent Damper SpringClip Screw Side Front Partially Opened DoorFor Your Safety Read Before Lighting Operating FireplaceLighting Instructions Pilot Assembly Inspecting BurnersTo Turn OFF GAS To Appliance Optional HAND-HELD Remote OperationCleaning Maintenance Burner Flame PatternPilot and Burner LogsWiring Diagram Service HintsTechnical Service Replacement PartsTroubleshooting Observed Problem Possible Cause RemedyConnected, replace ignitor Electrode at pilot spark atIf pilot lights, an improper Gas/air mixture causedGas leak. See Warning Illustrated Parts Breakdown ModelsParts List Description QTYBrick Liners for Models M36B,H, M36PB,H, VM36B,H and VM36PB,HLogsets for Models M42B,H, M42PB,H, VM42B,H and VM42PB,H Accessories Warranty Information Keep this WarrantyLimited Warranty VENT-FREE Firebox