Desa (V)T36EP, (V)T36EN installation manual Troubleshooting, Observed Problem Possible Cause Remedy

Page 28

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TROUBLESHOOTING

TROUBLESHOOTING

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

WARNING: Turn off heater and let cool before servicing. Only a quali- fied 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: Before troubleshooting the system,

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

make sure the gas shutoff valve is ON.

1.

Loose wiring connections

 

2.

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

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Ignitor will not spark or pilot will not light

1.

No gas supply, or shutoff valve is OFF

1.

Check to see if you have gas supply and

 

 

 

 

that equipment shutoff valve is opened

 

2.

Air in gas line

2.

Repeat lighting procedure several times

 

 

 

 

to purge all air out of lines. If after re-

 

 

 

 

peated attempts appliance does not light,

 

 

 

 

call for qualified service and repair.

 

3.

Construction debris clogging pilot orifice

3.

Remove debris and dirt, inspect and

 

 

 

 

clean any other possible obstructions

 

4.

Low gas pressure

4.

Contact your gas supplier to check

 

 

 

 

pressure

 

5.

Kinked pilot line

5.

Have a qualified technician replace pi-

 

 

 

 

lot line

 

6.

Control valve knob is not opening

6.

Replace control valve (Refer to Replace-

 

 

 

 

ment Parts, page 30)

 

7.

No power to unit or the ignition module

7.

Check that main power is on and that all

 

 

or power transformer is bad

 

wire connections are made correctly to

 

 

 

 

the ignition model (see Wiring Diagram,

 

 

 

 

page 24). Check for 24 VAC at the sec-

 

 

 

 

ondary side of the transformer. If 24

 

 

 

 

VAC is present, and the module does not

 

 

 

 

operate, have the module replaced oth-

 

 

 

 

erwise have the transformer replaced.

 

8.

Vent damper not fully open

8.

Open vent damper until fully locked in

 

 

 

 

OPEN position

 

 

 

 

 

Pilot will not stay lit

1.

Loose wiring on ignitor wire to ignition

1.

Check wiring connection. Refer to wir-

 

 

module and/or poor ground to ignition

 

ing diagram (see Wiring Diagram, page

 

 

module

 

24) and/or check ground wire to igni-

 

 

 

 

tion module

 

2.

Pilot flame too low to sense

2.

Clean and adjust pilot burner and check

 

 

 

 

gas supply and inlet pressure to unit

 

 

 

Note: Have a qualified technician replace

 

 

 

pilot assembly if broken or corroded

 

 

 

 

 

No gas to burner, although wall switch and

1.

Wall switch wires defective or too long

1.

Check electrical connections

valve are set to the ON position

 

 

 

 

 

 

 

 

 

Frequent pilot outage

1.

Pilot flame may be too low, causing

1.

Clean and adjust pilot flame for maximum

 

 

safety pilot to “drop out”

 

flame impingement on thermopile

 

2.

Improper venting or excessive blockage

2.

Have the vent system inspected, includ-

 

 

 

 

ing the termination cap. Remove any

 

 

 

 

restriction or obstruction

For

.

.com

108860-01C

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Contents For Your Safety For Your Safety What to do if YOU Smell GASTable of Contents Safety InformationLocal Codes Product IdentificationPRE-INSTALLATION Preparation Product FeaturesLocation and Space Requirements Clearances Framing and FinishingLocation of Termination CAP Balcony with Perpendicular Side WallVenting Installation Instructions Installation PrecautionsInstallation Planning Horizontal Termination InstallationVent Pipe Connections Installing Horizontal Vent Cap Horizontal Termination Configurations Ground Floor InstallationCorner and Alternate Installation Venting with Two 90 Elbows Installation for Vertical Termination Flat Ceiling InstallationVertical Termination Configurations High Altitude Installation Vertical VentingFireplace Installation Parts Lists for Venting Kits and ComponentsInstalling Optional Blower Accessories Check GAS TypeModel BKT Installation Blower Model BKBlower Wiring Diagram Blower Model BKTInstalling GAS Piping to Fireplace Location Installation Items NeededConnecting Fireplace to GAS Supply Installation Items NeededPressure Testing Gas Supply Piping System Checking GAS ConnectionsPressure Testing Fireplace Gas Connections Cleaning Glass DoorREMOVING/REPLACING Glass Door Removing Louver PanelsInstalling LOGS, Lava Rock and Glowing Embers Installing Rear Brick PanelInstalling Log No Wall Switch Installation Wiring DiagramOptional Remote Control For Your Safety Read Before Lighting Operating FireplaceLighting Instructions To Turn OFF GAS To ApplianceOperating Optional Blower Accessory Pilot AssemblyInspecting Burners Burner Flame PatternCleaning Maintenance Glass DoorPilot and Burners LogsTroubleshooting Observed Problem Possible Cause RemedyObserved Problem Possible Cause Replacement Parts Service HintsTechnical Service SpecificationsAccessories Illustrated Parts Breakdown Parts List Parts Available not ShownBurner Assembly KEY Part Number Description QTY VT36EPB VT36EPR VT36EPRB For more Visit www Com VT36ENR, VT36ENRB VT36EPR, VT36EPRBKEY Part Number Description QTY Warranty Information