Desa GMP26T, GMP20BT, GMP16T, GMP30BT Troubleshooting, Observed Problem Possible Cause Remedy

Page 20

TROUBLESHOOTING

WARNING: Turn off and unplug heater and let cool before servic- ing. Only a qualified service person should service and repair heater.

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

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

OBSERVED PROBLEM POSSIBLE CAUSE

REMEDY

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

1.Ignitor electrode positioned wrong

2.Ignitor electrode broken

3.Ignitor electrode not con- nected to ignitor cable

4.Ignitor cable pinched or wet

5.Broken ignitor cable

6.Bad piezo ignitor

1.Replace pilot assembly

2.Replace pilot assembly

3.Reconnect ignitor cable

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

5.Replace ignitor cable

6.Replace piezo ignitor

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

1.Gas supply turned off or equip- ment shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.Depleted gas supply

6.ODS/pilot is clogged

7.Gas regulator setting is not correct

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down con- trol knob. Repeat igniting op- eration until air is removed

5.Contact local propane/LP gas company

6.Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/pilot assembly

7.Replace gas regulator

20

www.desatech.com

113048-01C

Image 20

Contents What to do if YOU Smell GAS Table of Contents Safety Information Safety Information Product Identification Local CodesAIR for Combustion Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceInstallation Ventilation AIRCheck GAS Type Ventilation Air From Inside BuildingInstallation Items Locating HeaterInstalling Heater to Wall Placing Heater On Mounting Bracket 20,000 Btu/Hr ModelsAttaching To Wall Anchor Method Installing Bottom Mounting Screws Mounting Base Feet to Floor Where required by local codeMounting Heater to Floor with Optional Floor KIT Mounting Base Feet to HeaterConnecting to GAS Supply Typical Inlet Pipe DiametersPressure Testing GAS Supply Piping System Checking GAS ConnectionsTest Pressures In Excess Of 1/2 Psig 3.5 kPa Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaFor Your Safety Read Before Lighting Pressure Testing Heater GAS ConnectionsOperating Heater Manual Control Models Lighting InstructionsTo Turn OFF GAS To Appliance Manual Lighting ProcedureTo Select Heating Level for Infrared Heaters Thermostat Controlled Models Lighting Instructions Inspecting Heater Thermostat Control OperationPilot Flame Pattern Control Knob GMP16TBurner Flame Pattern for Infrared Heaters Inpecting HeaterBurner Flame Pattern for Blue Flame Heaters Cleaning Maintenance ODS/PILOT and BurnerBurner Pilot AIR Inlet CabinetTroubleshooting Observed Problem Possible Cause RemedyPressed See Cleaning and Mainte Gas leak. See Warning Statement aboveGMP16 GMP26 GMP16T GMP26T SpecificationsGMP30BT GMP20BT Service Hints Technical ServiceService Publications Replacement Parts AccessoriesIllustrated Parts Breakdown Models GMP16, GMP26, GMP16T, and GMP26TParts List Parts AVAILABLE-NOT ShownIllustrated Parts Breakdown and Parts List Models GMP16 and GMP26ODS/Pilot Burner Assembly GMP16T Models GMP16T and GMP26TModels GMP20BT and GMP30BT Parts Available not Shown Limited Warranty VENT-FREE Residential GAS Heaters Warranty InformationKeep this Warranty