Troubleshooting, Observed Problem, Possible Cause | Desa CD36TN-M

Troubleshooting

Troubleshooting

WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean pilot. This can damage pilot unit.

Note: All troubleshooting items are listed in order of operation.

The two most common causes of a malfunctioning gas appliance are:

1.Loose wiring connections

2.Construction debris clogging the pilot and/or gas control valve filter

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY

When ignitor button is pressed,	1. Ignitor electrode not con-		1.	Reconnect ignitor cable
there is no spark at pilot	2.	nected to ignitor cable	2.	Free ignitor cable if pinched
		Ignitor cable pinched or wet
				by any metal or tubing. Keep
	3.	Piezo ignitor nut is loose	3.	ignitor cable dry
				Tighten nut holding piezo
				ignitor. Nut is located behind
	4.	Broken ignitor cable	4.	the mounting bracket
				Replace ignitor cable
	5.	Bad piezo ignitor	5.	Replace piezo ignitor
	6.	Ignitor electrode broken	6.	Replace pilot assembly
	7.	Ignitor electrode positioned	7.	Tighten electrode. Replace if
		wrong		necessary

When ignitor button is pressed,	1. Gas supply turned off or equip-		1.	Turn on gas supply or open
there is spark at pilot but no		ment shutoff valve closed	2.	equipment shutoff valve
ignition	2. Gas control knob not in PI-			Turn gas control knob to PILOT
	3.	LOT position	3.	position
		Gas control knob not pressed		Press in gas control knob while
	4.	in while in PILOT position	4.	in PILOT position
		Air in gas lines when in-		Continue holding down con-
		stalled		trol knob. Repeat igniting
	5. Depleted gas supply (propane/			operation until air is removed
			5. Contact local propane/LP gas
	6.	LP models only)	6.	company
		Pilot is clogged		Clean pilot (see Cleaning and
				Maintenance, page 33) or re-
	7.	Gas regulator setting is not	7.	place pilot assembly
				Replace gas regulator
		correct

118531-01A

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Desa CD36TN-M installation manual Troubleshooting, Observed Problem, Possible Cause, Remedy

Contents

WHAT TO DO IF YOU SMELL GAS Table of Contents Safety Information Continued Safety informationProduct Identification Location and space requirements Product FeaturesPre-Installation Preparation Local Codes Clearances Figure 3 - Fireplace Bottom DimensionsContinued Packaging and Removal Figure 5 - Framing Clearances for Corner InstallationFigure 6 - Unit Dimensions Continued MANTEL CLEARANCES Continued Outside Corner D E B LFigure 9 - Minimum Clearances for Termination Cap Inside Corner Venting Installation Instructions Figure 10 - Vent Pipe Connections Venting Installation instructionsINSTALLATION PLANNING Continued Standoff Vent Cap Apply Mastic to All Four Sides Figure 12 - Installing Siding StandoffFigure 13 - Installing Outer Wall Firestop Inner Wall Firestop Clearance at Ground Floor Installation Configuration For Corner InstallationUsing One 90 Elbow Configuration with Vertical Rise and One 90 Elbow Continued HORIZONTAL VENT INSTALLATIONS Continued Installation for vertical terminationFlat Ceiling Installation Figure 20 - Installing Firestop Continued Thimble InstallationVertical Termination Configurations for Top Vent Figure 21 - Installing Thimble with Firestop Figure 23 - Vertical Venting parts list for venting kits and componentsConfiguration Using Two 90 Elbows Continued Description ContinuedELECTRICAL SUPPLY CONNECTION Number Firebox Millivolt Models Installing optional blower accessoriesFigure 27 - Blower Model BK Figure 28 - Attaching Speed Control to Figure 30 - Blower Model BKT Model BKT InstallationContinued Continued Wiring DiagramsFigure 31 - Blower Wiring Diagram for Figure 32 - Millivolt Ignition Wiring Diagram Figure 34 - Attaching Alkaline Battery to Installing optional wall Mount Switch - gwmS2Figure 33 - Connecting Wall Switch to Installing Remote Receiver Check Gas Type Installing Gas Piping to Fireplace LocationInstallation Items Needed Continued Pressure Testing Gas Supply Piping System CONNECTING FIREPLACE TO GAS SUPPLYInstallation Items Needed Figure 39 - Connecting Flexible Gas Line Natural Gas Fireplace Removing/Replacing Glass DoorFigure 40 - Equipment Shutoff Valve Figure 42 - Checking Gas Joints for Removing Top Louver Trim Panel Removing Lower Louver Access PanelFigure 43 - Removing Lower Louver Access Panel Continued Figure 45 - Removing/Replacing Glass Door Installing LOGS, lava rock and glowing embersFigure 46 - Installing Logs Continued TO TURN OFF GAS TO APPLIANCE for your safety Read before lightingOperating Fireplace lighting instructions optional Hand-Held REMOTE OPERATION MANUAL LIGHTING PROCEDUREFigure 49 - Setting the Selector Switch Continued Remote Control Unit HRC200 operating optional blower accessorySafety Features Auto Shutoff Feature see Troubleshooting, page pilot assemblysee Troubleshooting, page Figure 52 - Pilot Assembly Millivolt Pilot Orifice Conversion Figure 54 - Removing Logs and Burner AssemblyFigure 56 - Adjusting Air Shutter Continued GLASS DOOR Cleaning and MaintenanceConversion Instructions Gas Control Conversion logs CAUTION: Do not vacuum if pieces are hotContinued pilot and burners REMEDY TroubleshootingOBSERVED PROBLEM POSSIBLE CAUSE POSSIBLE CAUSE TROUBLESHOOTINGOBSERVED PROBLEM Continued WARNING If you smell gas Shut off gas supply Continued OBSERVED PROBLEMParts Under Warranty Parts Not Under Warranty THERMOSTATICALLY - CONTROLLED BLOWER KIT - BKT WALL MOUNTED ON/OFF SWITCH GWMS2 Not ShownWhen Gas Pressure Is Too Low MANUAL BLOWER KIT - BK Illustrated Parts Breakdown Fireplace Assembly for Model CD36TN-M FIREPLACE ASSEMBLY FOR MODEL CD36TN-M PARTS LIST Illustrated parts breakdown BURNER ASSEMBLY FOR MODEL CD36TN-M 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BURNER ASSEMBLY FOR MODEL CD36TN-M LIMITED WARRANTY DIRECT-VENTFIREPLACE Warranty InformationKEEP THIS WARRANTY