Desa 103426-01 installation manual Troubleshooting, Observed Problem, Possible Cause, Remedy

Page 18
TROUBLESHOOTING

UNVENTED NATURAL GAS LOG HEATER

TROUBLESHOOTING

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

OBSERVED PROBLEM

OBSERVED PROBLEM WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice person should service and repair heater.

POSSIBLE CAUSE

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

REMEDY

When ignitor button is pressed, there is no

1.

Ignitor electrode not connected to igni-

1.

Reconnect ignitor cable

spark at ODS/pilot

 

tor cable

 

 

 

2.

Ignitor cable pinched or wet

2.

Free ignitor cable if pinched by any

 

 

 

 

metal or tubing. Keep ignitor cable dry

 

3.

Piezo ignitor nut is loose

3.

Tighten nut holding piezo ignitor to base

 

 

 

 

panel of log set. Nut is located behind

 

 

 

 

base panel.

 

4.

Broken ignitor cable

4.

Replace ignitor cable

 

5.

Bad piezo ignitor

5.

Replace piezo ignitor

 

6.

Ignitor electrode positioned wrong

6.

Replace ignitor

 

7.

Ignitor electrode broken

7.

Replace ignitor

 

 

 

 

 

When ignitor button is pressed, there is

1.

Gas supply turned off or manual shutoff

1.

Turn on gas supply or open manual

spark at ODS/pilot but no ignition

 

valve closed

 

shutoff valve

 

2.

Control knob not in PILOT position

2.

Turn control knob to PILOT position

 

3.

Control knob not pressed in while in PI-

3.

Press in control knob while in PILOT

 

 

LOT position

 

position

 

4.

Air in gas lines when installed

4.

Continue holding down control knob.

 

 

 

 

Repeat igniting operation until air is re-

 

 

 

 

moved

 

5.

ODS/pilot is clogged

5.

Clean ODS/pilot (see Cleaning and

 

 

 

 

Maintenance, page 17) or replace ODS/

 

 

 

 

pilot assembly

 

6.

Gas regulator setting is not correct

6.

Replace gas regulator

 

 

 

 

 

ODS/pilot lights but flame goes out when

1.

Control knob not fully pressed in

1.

Press in control knob fully

control knob is released

2.

Control knob not pressed in long enough

2.

After ODS/pilot lights, keep control

 

 

 

 

knob pressed in 30 seconds

 

3.

Safety interlock system has been trig-

3.

Wait one minute for safety interlock sys-

 

 

gered

 

tem to reset. Repeat ignition operation

 

4.

Manual shutoff valve not fully open

4.

Fully open manual shut-off valve

 

5.

Pilot flame not touching thermocouple,

5.

A) Contact local natural gas company

 

 

which allows thermocouple to cool,

 

 

 

 

causing pilot flame to go out. This prob-

 

B) Clean ODS/pilot (see Cleaning and

 

 

lem could be caused by one or both of

 

Maintenance, page 17) or replace ODS/

 

 

the following:

 

pilot assembly

 

 

A) Low gas pressure

 

 

 

 

B) Dirty or partially clogged ODS/

 

 

 

 

pilot

 

 

 

6.

Thermocouple connection loose at

6.

Hand tighten until snug, then

 

 

control valve

 

tighten 1/4 turn more

 

7. Thermocouple damaged

7.

Replace thermocouple

 

8.

Control valve damaged

8.

Replace control valve

Continued

18

103426

Image 18
Contents DESA INTERNATIONAL OWNER’S OPERATION AND INSTALLATION MANUALwhere not prohibited by state or local codes —WHAT TO DO IF YOU SMELL GASSAFETY INFORMATION UNVENTED NATURAL GAS LOG HEATERWARNINGS PRODUCT IDENTIFICATION PRODUCT FEATURESSafety Device LOCAL CODESDETERMINING AIR FLOW FOR HEATER LOCATION AIR FOR COMBUSTION AND VENTILATIONPROVIDING ADEQUATE VENTILATION Unusually Tight ConstructionVentilation Air From Inside Building ContinuedVENTILATION AIR Ventilation Air From OutdoorsIf Not Using Mantel INSTALLATIONINSTALLATION AND CLEARANCES CHECK GAS TYPEDetermining Minimum Mantel Clearance If Using MantelMantel Clearances INSTALLATIONUNVENTED NATURAL GAS LOG HEATER Floor ClearancesINSTALLATION ContinuedINSTALLATION INSTALLING HEATER BASE ASSEMBLYInstallation Items Needed ContinuedInstallation Items Needed CONNECTING TO GAS SUPPLYINSTALLATION UNVENTED NATURAL GAS LOG HEATERCHECKING GAS CONNECTIONS Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Test Pressures In Excess Of 1/2 PSIGUNVENTED NATURAL GAS LOG HEATER INSTALLING LOGS American Oak Design ModelsINSTALLATION ContinuedFigure 22 - Installing Bottom Middle Log INSTALLING LOGS Split Oak Design ModelsINSTALLATION Figure 24 - Installing Top Log #4READ BEFORE LIGHTING Thermostat-ControlledModels FOR YOUR SAFETYOPERATING HEATER LIGHTING INSTRUCTIONSThermostat Controlled Models MANUAL LIGHTING PROCEDUREManually-ControlledModels FOR YOUR SAFETY TO TURN OFF GAS TO APPLIANCEVARIABLE CONTROL OPERATION INSPECTING BURNERSManually-ControlledModels PILOT FLAME PATTERNODS/PILOT AND BURNERS CLEANING AND MAINTENANCEFRONT BURNER FLAME PATTERN LOGSPOSSIBLE CAUSE TROUBLESHOOTINGOBSERVED PROBLEM REMEDYMaintenance, page TROUBLESHOOTINGOBSERVED PROBLEM ContinuedMaintenance, page TROUBLESHOOTINGOBSERVED PROBLEM UNVENTED NATURAL GAS LOG HEATEROPTIONAL POSITIONING OF THERMOSTAT SENSING BULB For Masonry and Factory- built Metal FireplaceSERVICE HINTS SPECIFICATIONSREPLACEMENT PARTS TECHNICAL SERVICEBLACK FIREPLACE HOOD - GA6050 ACCESSORIESMANUAL SHUTOFF VALVE - GA5010 BRASS FIREPLACE HOOD - GA6052CFS18NVB VS24NVB CFS24NVB VS30NVB CFS30NVB ILLUSTRATED PARTS BREAKDOWN4Variable Manually Controlled Models VS18NVB UNVENTED NATURAL GAS LOG HEATERPART NUMBER FOR PARTS LISTVariable Manually-ControlledSplit Oak Models VS18NVB/CFS18NVBILLUSTRATED PARTS BREAKDOWN UNVENTED NATURAL GAS LOG HEATERPART NUMBER FOR Thermostat-ControlledSplit Oak ModelsPARTS LIST VS18NTAVL30NV ILLUSTRATED PARTS3 BREAKDOWNVariable Manually-Controlled Models VL18NV VL24NV UNVENTED NATURAL GAS LOG HEATERPART NUMBER FOR Variable Manually-ControlledAmerican Oak ModelsPARTS LIST VL18NVUNVENTED NATURAL GAS LOG HEATER Page LIMITED WARRANTY VENT-FREENATURAL GAS LOG HEATERS WARRANTY INFORMATIONNOT A UPC