TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

Pilot lights but flame goes out

1. Gas control knob not fully

1.

Press in gas control knob

when control knob is released

2.

pressed in

2.

fully

 

Gas control knob not pressed

After pilot lights, keep gas

 

 

in long enough

 

control knob pressed in 30

 

3.

Equipment shutoff valve not

3.

seconds

 

Fully open equipment shutoff

 

4.

fully open

4.

valve

 

Pilot flame not touching ther-

A) Contact local natural or

 

 

mocouple, which allows ther-

 

propane/LP gas company

 

 

mocouple to cool, causing

 

B) Clean pilot (see Cleaning

 

 

pilot flame to go out. This

 

and Maintenance, page 30) or

 

 

problem could be caused by

 

replace pilot assembly

 

 

one or both of the following:

 

 

 

 

A) Low gas pressure

 

 

 

 

B) Dirty or partially clogged

 

 

 

5.

pilot

5.

Hand tighten until snug, then

 

Thermocouple connection

 

6.

loose at control valve

6.

tighten 1/4 turn more

 

Thermocouple damaged

Replace pilot assembly

 

7.

Control valve damaged

7.

Replace control valve

 

 

 

 

Burner does not light after pilot

1. Burner orifice clogged

1.

Clean burner (see Cleaning

is lit

 

 

 

and Maintenance, page 30) or

 

2.

Inlet gas pressure is too low

2.

replace burner orifice

 

Contact local propane/LP or

 

3.

Thermopile leads disconnect-

3.

natural gas company

 

Reconnect leads

 

4.

ed or improperly connected

4.

Replace thermopile

 

Thermopile is defective

 

 

 

 

Delayed ignition burner

1. Manifold pressure is too low

1.

Contact local propane/LP or

 

2.

Burner porting or orifice

2.

natural gas company

 

Clean burner (see Cleaning

 

 

clogged

 

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

 

2.

Damaged burner

2.

replace burner orifice

 

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas control

 

 

 

 

Slight smoke or odor during initial

1. Residues from manufacturing

1.

Problem will stop after a few

operation

 

processes and logs curing

 

hours of operation

111250-01E

www.desatech.com

33

Page 33
Image 33
Desa (V)T36NA After pilot lights, keep gas, Long enough Control knob pressed, Seconds, Fully open Valve, Low gas pressure

(V)T36NA specifications

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