Desa Tech CHDV41N, CHDV41P, CHDV37P, CHDV37N Troubleshooting, Observed Problem Possible Cause

Page 29

OWNER’S MANUAL

TROUBLESHOOTING

Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.

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

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.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

When ignitor button is pressed, there is no spark at pilot

1.Ignitor electrode not connected to igni- tor cable

2.Ignitor cable pinched or wet

3.Piezo ignitor nut is loose

4.Broken ignitor cable

5.Bad piezo ignitor

6.Ignitor electrode broken

7.Ignitor electrode positioned wrong

1.Reconnect ignitor cable

2.Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry

3.Tighten nut holding piezo ignitor. Nut is located behind the mounting bracket

4.Replace ignitor cable

5.Replace piezo ignitor

6.Replace pilot assembly

7.Replace pilot assembly

When ignitor button is pressed, there is spark at pilot but no ignition

1.Gas supply turned off or manual shutoff valve closed

2.Gas control knob not in PILOT position

3.Gas control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.Depleted gas supply (propane/LP models only)

6.Pilot is clogged

7.Gas regulator setting is not correct

1.Turn on gas supply or open manual shutoff valve

2.Turn gas control knob to PILOT position

3.Press in gas control knob while in PILOT position

4.Continue holding down gas control knob. Repeat igniting operation until air is removed

5.Contact local propane/LP gas company

6.Clean pilot (see Cleaning and Mainte- nance, page 28) or replace pilot assembly

7.Replace gas control

Pilot lights but flame goes out when control knob is released

1.Gas control knob not fully pressed in

2.Gas control knob not pressed in long enough

3.Manual shutoff valve not fully open

4.Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This prob- lem could be caused by one or both of the following:

A)Low gas pressure

B)Dirty or partially clogged pilot

5.Thermocouple connection loose at con- trol valve

6.Thermocouple damaged

7.Control valve damaged

1.Press in gas control knob fully

2.After pilot lights, keep gas control knob pressed in 30 seconds

3.Fully open manual shut-off valve

4.A) Contact local gas company

B) Clean pilot (see Cleaning and Mainte- nance, page 28) or replace pilot assembly

5.Hand tighten until snug, then tighten 1/4 turn more

6.Replace thermocouple

7.Replace control valve

www.desatech.com

Continued

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Contents CHDV37N, CHDV37P CHDV41N, and CHDV41P For Your SafetyFor Your Safety What to do if YOU Smell GAS CHDV37N/P and CHDV41N/P Safety InformationProduct Identification Product FeaturesLocal Codes Glossary TermsLocation and Space Requirements PRE-INSTALLATION PreparationClearances Framing and FinishingLocation of Vent Termination PRE-INSTALLATION Preparation General VentingGeneral Venting Installation Precautions Venting InstallationInstallation Planning Installing Vent System in a ChaseSnorkel Termination Installation for Horizontal TerminationVent Pipe Connections Horizontal Venting Horizontal Termination ConfigurationsVenting with Two 90 Elbows Cathedral Ceiling Installation Installation for Vertical TerminationFlat Ceiling Installation Venting with One 90 Elbow Vertical Termination ConfigurationsVertical Venting Vertical Rigid Venting Configuration Using Two 90 ElbowsParts Lists for Venting Kits and Components High Altitude InstallationComfort Glow Rigid Venting Comfort Glow Flexible VentingInstalling Optional Blower Accessory Fireplace InstallationInstalling GA3750/CDA3620T Blowers Check GAS TypePlug in blower power cord Installation Items Needed Installing GAS Piping to Fireplace LocationInstallation Items Needed Connecting Fireplace to GAS SupplyPressure Testing Gas Supply Piping System Checking GAS ConnectionsClose manual shutoff valve see Fig- ure Pressure Testing Fireplace Gas ConnectionsWireless HAND-HELD Remote Control Accessory Ghrct Installing Optional Wall Mounted Thermostat GWMT1Included Installing Battery into Receiver Installing 9-Volt Battery in Hand- Held Remote Control UnitAttaching Magnetic Decorative Brass Strips REMOVING/REPLACING Glass DoorInstalling Optional Brick Liner CD8037/CD8041 Fireplace Models CHDV37N/P and CHDV41N/P Installing LOGS, Lava Rock and Glowing EmbersManual Lighting Procedure For Your Safety Read Before LightingOperating Fireplace Lighting InstructionsHAND-HELD Remote Operation Operating Optional Blower AccessoryInspecting Burners Pilot AssemblyOperating Optional GWMT1 Wall Mounted Thermostat Burner Flame PatternGlass Door Cleaning and MaintenancePilot and Burners LogsObserved Problem Possible Cause TroubleshootingObserved Problem Possible Cause Remedy Above Gas leak. See Warning statementService Hints Replacement Parts Wiring DiagramTechnical Service Parts Under WarrantyAccessories SpecificationsManual Blower KIT GA3750 THERMOSTATICALLY- Controlled Blower KIT CDA3620TCHDV37N CHDV41N Illustrated Parts BreakdownDIRECT-VENT Fireplace CHDV37N CHDV41N Parts ListCHDV37P CHDV41P DIRECT-VENT Fireplace CHDV37P and CHDV41P Warranty Information
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