TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

ODS/pilot lights but flame

1. Control knob not fully pressed in

1.

Press in control knob fully

goes out when control knob is

2. Control knob not pressed in

2. After ODS/pilot lights, keep con-

released

3.

long enough

3.

trol knob pressed in 30 seconds

 

Equipment shutoff valve not

Fully open equipment shutoff

 

4.

fully open

4.

valve

 

Thermocouple connection

Hand tighten until snug, then

 

5.

loose at control valve

5.

tighten 1/4 turn more

 

Pilot flame not touching ther-

A) Contact local natural or

 

 

mocouple, which allows ther-

 

propane/LP gas company

 

 

mocouple to cool, causing

 

B) Clean ODS/pilot (see

 

 

pilot flame to go out. This

 

Cleaning and Maintenance,

 

 

problem could be caused by

 

page 15) or replace ODS/pilot

 

 

one or both of the following:

 

assembly

 

 

A) Low gas pressure

 

 

 

 

 

B) Dirty or partially clogged

 

 

 

 

6.

ODS/pilot

6.

Replace pilot assembly

 

Thermocouple damaged

 

7.

Control valve damaged

7.

Replace control valve

 

8.

Safety interlock system has

8.

Wait one minute for safety in-

 

 

been triggered (thermostat

 

terlock system to reset. Repeat

 

 

models only)

 

ignition operation

 

 

 

 

 

Burner(s) does not light after

1. Burner orifice(s) is clogged

1.

Clean burner orifice(s) (see

ODS/pilot is lit

 

 

 

Cleaning and Maintenance,

 

 

 

 

page 15) or replace burner

 

2.

Inlet gas pressure is too low

2.

orifice(s)

 

Contact local natural or pro-

 

 

 

 

pane/LP gas company

 

 

 

 

 

Delayed ignition of burner(s)

1. Manifold pressure is too low

1.

Contact local natural or pro-

 

2.

Burner orifice(s) is clogged

2.

pane/LP gas company

 

Clean burner orifice(s) (see

 

 

 

 

Cleaning and Maintenance,

 

 

 

 

page 15) or replace burner

 

 

 

 

orifice(s)

 

 

 

 

 

Burner backfiring during com-

1. Burner orifice(s) is clogged or

1.

Clean burner orifice(s) (see

bustion

 

damaged

 

Cleaning and Maintenance,

 

 

 

 

page 15) or replace burner

 

2.

Burner damaged

2.

orifice(s)

 

Replace burner

 

3.

Gas regulator defective

3.

Replace gas regulator

116307-01C

www.desatech.com

17

Page 17
Image 17
Desa VSF30PT, LSFG20NT installation manual Troubleshooting

VSF30PT, LSFG20NT specifications

The Desa VSF30PT and LSFG20NT represent two significant innovations in the HVAC (Heating, Ventilation, and Air Conditioning) industry, catering to diverse consumer needs and preferences.

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