TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

ODS/pilot lights but flame goes

1. Control knob not fully

1.

Press in control knob fully

out when control knob is released

 

pressed in

 

 

 

2.

Control knob not pressed in

2.

After ODS/pilot lights, keep con-

 

 

long enough

 

trol knob pressed in 30 seconds

 

3.

Safety interlock system has

3.

Wait one minute for safety in-

 

 

been triggered

 

terlock system to reset. Repeat

 

 

 

 

ignition operation

 

4.

Equipment shutoff valve not

4.

Fully open equipment shutoff

 

 

fully open

 

valve

 

5.

Pilot flame not touching ther-

5.

A) Contact local natural or

 

 

mocouple, which allows

 

propane/LP gas company

 

 

thermocouple to cool, caus-

 

 

 

 

ing pilot flame to go out. This

 

B) Clean ODS/pilot (see

 

 

problem could be caused by

 

Cleaning and Maintenance,

 

 

one or both of the following:

 

page 30) or replace ODS/pilot

 

 

A) Low gas pressure

 

assembly

 

 

B) Dirty or partially clogged

 

 

 

 

ODS/pilot

 

 

 

6.

Thermocouple connection

6.

Hand tighten until snug, then

 

 

loose at control valve

 

tighten 1/4 turn more

 

7.

Thermocouple damaged

7.

Replace pilot assembly

 

8.

Control valve damaged

8.

Replace control valve

 

 

 

 

 

Burner does not light after ODS/ pilot is lit

1.Inlet gas pressure is too low

2.Burner orifice is clogged

3.Thermopile leads discon- nected or improperly con- nected (Remote-Ready Mod- els Only)

4.Burners will not come on in remote position (Remote- Ready Models Only)

1.Contact local natural or pro- pane/LP gas company

2.Clean burner (see Cleaning and Maintenance, page 30) or replace burner orifice

3.Reconnect leads (see Wiring Diagram, page 35)

4.Replace battery in hand-held remote and receiver

Delayed ignition of burner

1. Manifold pressure is too low

1.

Contact local natural or pro-

 

 

 

 

pane/LP gas company

 

2.

Burner orifice is clogged

2.

Clean burner (see Cleaning

 

 

 

 

and Maintenance, page 30) or

 

 

 

 

replace burner orifice

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 30) or

 

 

 

 

replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas regulator

 

4.

Inlet gas pressure is too low

4.

Contact local natural or pro-

 

 

 

 

pane/LP gas company

32

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Desa EFS10RNA, CGCF10NR, CGCF10PR, EFS10RPA, VMH10RPC, VMH10RNC installation manual Troubleshooting