TROUBLESHOOTING

Continued

 

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

 

 

 

 

 

 

 

Pilot lights but flame goes out when control

1.

Gas control knob not fully pressed in

1.

Press in gas control knob fully

 

 

knob is released

2.

Gas control knob not pressed in long

2.

After pilot lights, keep gas control knob

 

 

 

 

3.

enough

3.

pressed in 30 seconds

 

 

 

 

Equipment shutoff valve not fully open

Fully open equipment shutoff valve

 

 

 

 

4.

Pilot flame not touching thermocouple,

4.

A) Contact local natural or propane/LP

 

 

 

 

 

which allows thermocouple to cool,

 

gas company

 

 

 

 

 

causing pilot flame to go out. This prob-

 

B) Clean pilot (see Cleaning and Main-

 

 

 

 

 

lem could be caused by one or both of

 

tenance, page 24) or replace pilot as-

 

 

 

 

 

the following:

 

sembly

 

 

 

 

 

A) Low gas pressure

 

 

 

 

 

 

 

 

5.

B) Dirty or partially clogged pilot

5.

Hand tighten until snug, then tighten 1/4

 

 

 

 

Thermocouple connection loose at con-

 

 

 

 

6.

trol valve

6.

turn more

 

 

 

 

Thermocouple damaged

Replace pilot assembly

 

 

 

 

7.

Control valve damaged

7.

Replace control valve

 

 

 

 

 

 

 

-

 

 

Burner does not light after pilot is lit

1.

Burner orifice clogged

1.

Clean burner (see Cleaning and Main

 

 

 

 

 

 

 

tenance, page 24) or replace burner

 

 

 

 

2.

Inlet gas pressure is too low

2.

orifice

 

 

 

 

Contact local propane/LP or natural gas

 

 

 

 

3.

Thermopile leads disconnected or im-

3.

company

 

 

 

 

Reconnect leads

 

 

 

 

4.

properly connected

4.

Replace thermopile

 

 

 

 

 

Thermopile is defective

 

 

Delayed ignition burner

1.

Manifold pressure is too low

1.

Contact local propane/LP or natural gas

 

 

 

 

2.

Burner porting or orifice clogged

2.

company

 

 

 

 

Clean burner (see Cleaning and Main-

 

 

 

 

 

 

 

tenance, page 24) or replace burner

 

 

 

 

 

 

 

orifice

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Main-

 

 

 

 

 

 

 

tenance, page 24) or replace burner

 

 

 

 

2.

Damaged burner

2.

orifice

 

 

 

 

Replace damaged burner

 

 

 

 

3.

Gas regulator defective

3.

Replace gas control

 

 

 

Slight smoke or odor during initial

1.

Residues from manufacturing processes

1.

Problem will stop after a few hours of

 

 

operation

 

and logs curing

 

operation

 

 

 

Heater produces a whistling noise when

1.

Turning gas control knob to HI position

1.

Turn gas control knob to LO position

 

 

burner is lit

2.

when burner is cold

2.

and let warm up for a minute

 

 

 

 

Air in gas line

Operate burner until air is removed from

 

 

 

 

 

 

 

line. Have gas line checked by local

 

 

 

 

3.

Dirty or partially clogged burner orifice

3.

propane/LP or natural gas company

 

 

 

 

Clean burner (see Cleaning and Main-

 

 

 

 

 

 

 

tenance, page 24) or replace burner

 

 

 

 

 

 

 

orifice

 

 

Glass soots

1.

Flame impingement on logs

1.

Adjust the log set so that the flame does

 

 

 

 

2.

Debris around burner air mixer

2.

not excessively impinge on it

 

 

 

 

Inspect the opening at the base of the

 

 

 

 

 

 

 

burner to see that it is NOT packed with

 

 

 

 

 

 

 

any type of material

 

26

www.desatech.com

111921-01E

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Desa (V)K42P installation manual Troubleshooting
Page 25 Page 27

(V)K42P specifications

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