Desa GWP20T GWN30T, WMP20, GP30 GN30T, GWP20 GWN20T Observed Problem Possible Cause Remedy

Page 18

18

TROUBLESHOOTING

TROUBLESHOOTING

Continued

 

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

Burner does not light after ODS/pilot is lit

1.

Burner orifice is clogged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

 

nance, page 16) or replace burner orifice

 

 

2.

Inlet gas pressure is too low

2.

Contact local natural or propane/LP gas

 

 

 

 

 

company

 

 

 

 

 

 

 

Delayed ignition of burner

1.

Manifold pressure is too low

1.

Contact local natural or propane/LP gas

 

 

 

 

 

company

 

 

2.

Burner orifice is clogged

2.

Clean burner (see Cleaning and Mainte-

 

 

 

 

 

nance, page 16) or replace burner orifice

 

 

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

 

nance, page 16) or replace burner orifice

 

 

2.

Burner damaged

2.

Replace burner

 

 

3.

Gas regulator defective

3.

Replace gas regulator

 

 

 

 

 

 

 

Yellow flame during burner combustion

1.

Not enough air

1.

Check burner for dirt and debris. If

 

 

 

 

 

found, clean burner (see Cleaning and

 

 

 

 

 

Maintenance, page 16)

 

 

2.

Gas regulator defective

2.

Replace gas regulator

 

 

3.

Clogged or dirty burner

3.

Clean burner (see Cleaning and Main-

 

 

 

 

 

tenance, page 16)

 

 

 

 

 

 

 

Slight smoke or odor during initial operation

1.

Residues from manufacturing processes

1.

Problem will stop after a few hours of

 

 

 

 

 

operation

 

 

 

 

 

 

 

Heater produces a whistling noise when

1.

Turning control knob to HI position

1.

Turn control knob to LO position and

 

burner is lit

 

when burner is cold

 

let warm up for a minute

 

 

2.

Air in gas line

2.

Operate burner until air is removed from

 

 

 

 

 

line. Have gas line checked by local

 

 

 

 

 

natural or propane/LP gas company

 

 

3.

Air passageways on heater blocked

3.

Observe minimum installation clear-

 

 

 

 

 

ances (see Figure 4, page 7)

 

 

4.

Dirty or partially clogged burner orifice

4.

Clean burner (see Cleaning and Mainte-

 

 

 

 

 

nance, page 16) or replace burner orifice

 

 

 

 

 

 

White powder residue forming within burner box or on adjacent walls or furniture

1.When heated, vapors from furniture pol- ish, wax, carpet cleaners, etc. may turn into white powder residue

1.Turn heater off when using furniture polish, wax, carpet cleaners, or similar products

For..com

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Contents GWN20T, GWP20T GWN30T, GWP30T What to do if YOU Smell GASTable of Contents Safety InformationLocal Codes Safety Information Product IdentificationProduct Features UnpackingUnusually Tight Construction AIR for Combustion and VentilationProviding Adequate Ventilation Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceVentilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Check GAS Type InstallationInstallation Items Locating HeaterMounting Bracket Installing Heater to WallAttaching Thermostat Sensing Bulb Removing Front Panel Of HeaterMarking Screw Locations Attaching Mounting Bracket To WallPlacing Heater On Mounting Bracket Mounting Heater to Floor with Optional Floor KIT Installing Bottom Mounting ScrewsMounting Base Feet to Floor Where required by local code Mounting Base Feet to HeaterConnecting to GAS Supply Typical Inlet Pipe DiametersPressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsChecking GAS Connections Manual Control Models For Your Safety Read Before Lighting Operating HeaterLighting Instructions Shutting Off Heater Manual Lighting ProcedureTo Turn OFF GAS to Appliance Shutting Off Burner Only pilot stays litInspecting Heater Pilot Flame PatternThermostat Control Operation Burner Flame Pattern Cleaning MaintenanceCleaning Burner Pilot AIR Inlet CabinetTroubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Gas leak. See Warning statement at Illustrated Parts Breakdown Parts List WMN20 WMP20 Description QTYGWN30T, GWP30T GGN30T, GP30T GWN20T, GWP20T, GWN30T, GWP30T Service Hints SpecificationsReplacement Parts Technical ServiceOwners Registration Form Postage Required Equipment Shutoff Valve GA5010 AccessoriesParts Centrals FAN Kits GA3250TWarranty Information