Desa CGR50BNA, CGR35NA, CGR65NA, CGR50NA Trouble Shooting, Observed Possible Problem Cause Remedy

Page 27

TROUBLE-

SHOOTING

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

WARNING

WARNING ICON

G 001

Turn off and unplug heater and let cool before servicing. Unless you need gas supply for testing, shut off manual shutoff valve before servicing. Only a qualified service person should service and repair heater and venting system.

CAUTION

WARNING ICONG 001

Never use a wire, needle, or similar object to clean pilot. This can damage pilot.

OBSERVED

POSSIBLE

 

 

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

 

When ignitor button

1. Incorrect spark gap.

1.

Adjust spark gap to 1/16".

is pressed, there is no

2.

Ignitor electrode posi-

2.

Replace ignitor.

spark at pilot.

 

tioned wrong.

 

 

 

 

3.

Ignitor electrode broken.

3.

Replace ignitor.

 

4.

Ignitor electrode not con-

4.

Reconnect ignitor cable.

 

 

nected to ignitor cable.

 

 

 

 

5.

Ignitor cable pinched or

5.

Free ignitor cable if

 

 

wet.

 

pinched by any metal or

 

 

 

 

tubing. Keep ignitor

 

 

 

 

cable dry.

 

6.

Piezo ignitor nut is loose.

6.

Tighten nut holding piezo

 

 

 

 

ignitor to heater cabinet.

 

 

 

 

Nut is located inside

 

 

 

 

heater cabinet at top.

 

7.

Broken or frayed ignitor

7.

Replace ignitor cable.

 

 

cable.

 

 

 

 

8.

Loose ignitor cable.

8.

Reconnect ignitor cable.

 

9.

Bad piezo ignitor.

9.

Replace piezo ignitor.

 

 

 

 

 

 

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

1.Gas supply turned off or manual 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.Pilot is clogged.

6.Gas regulator setting is not correct.

1.Turn on gas supply or open manual shutoff valve.

2.Turn control knob to PILOT position.

3.Press in control knob while in PILOT position.

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

5.Clean pilot (see Clean- ing and Maintenanc, page 26) or replace pilot assembly.

6.Replace control valve.

Continued

27

 

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Image 27
Contents OWNER’S Operation and Installation Manual For Your SafetyWhat to do if YOU Smell GAS Contents Carbon monoxide poisoning may lead to death Safety InformationSafety Information Identification ProductLocal Codes Unpacking Product Features Installation ItemsCheck GAS Type Heater Clearances Locating HeaterVenting Heater Do not vent heater in any of the following ways see Figure Venting HeaterVenting Heater Proper Size Vent Connecting Heater to Utility Gas Line Connecting to GAS SupplyGas Connection Checking GAS Connections Pressure Testing Gas Supply Piping SystemLocation of Radiants Installing RadiantsInserting Glass Panels Installing Glass PanelInserting Glass into Lower Retaining Channel AIR for Combustion and Ventilation Draft Hood Spillage Test Determining FRESH-AIR Flow for Heater LocationVentilation Air from Outdoors Example 2 Locating Heater in Confined Closed Area For Your Safety Read Before Lighting Operating HeaterLighting Instructions Viewing Pilot Shutting Off Heater Manual Lighting ProcedureBlower Operation To Turn OFF GAS to ApplianceInspecting Pilot and Burner Flame Pilot Flame PatternBurner Flame Pattern Correct Burner Flame Pattern Cleaning and Maintenance Observed Possible Problem Cause Remedy Trouble ShootingSee Changing Burner See Removing Control TROUBLE- ShootingLighting Instructions Top Ing statement atRemoving Control Valve and Burner Tube Service ProceduresRemoving Burner Changing Burner Orifice Blower Wiring DiagramModel Technical ServiceService Hints 35,000 BTU/Hr 50,000 BTU/HrOrdering Replacement Parts Centrals Parts Under WarrantyParts Not Under Warranty Valve GA5010 AccessoriesBlower Assembly Illustrated Parts ListCabinet Assembly Burner Assembly Thermocouple Interrupter 100792 100792 Limited Warranty Comfort Glow Vented Natural GAS Heaters Warranty Information