Desa Tech S26PTA Continued, Observed Problem, Possible Cause, Remedy, see Cleaning and Mainte

Models: S26NTA S26PTA

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(see Cleaning and Mainte-

TROUBLESHOOTING

 

 

Continued

 

 

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

ODS/pilot lights but flame goes

1. Control knob not fully pressed in

1.

Press in control knob fully

out when control knob is re-

2. Control knob not pressed in

2.

After ODS/pilot lights, keep con-

leased

 

long enough

 

trol knob pressed in 30 seconds

 

3.

Equipment shutoff valve not

3.

Fully open equipment shutoff

 

 

fully open

 

valve

 

4.

Pilot flame not touching ther-

4.

A) Contact local gas company

 

 

mocouple, which allows ther-

 

 

 

 

mocouple to cool, causing pi-

 

B) Clean ODS/pilot (see

 

 

lot flame to go out. This prob-

 

Cleaning and Maintenance,

 

 

lem could be caused by one or

 

pages 16 and 17) or replace

 

 

both of the following:

 

ODS/pilot assembly

 

 

A) Low gas pressure

 

 

 

 

B) Dirty or partially clogged

 

 

 

 

ODS/pilot

 

 

 

5.

Thermocouple connection

5.

Hand tighten until snug, then

 

 

loose at control valve

 

tighten 1/4 turn more

 

6.

Thermocouple damaged

6.

Replace pilot assembly

 

7.

Control valve damaged

7.

Replace control valve

 

 

 

 

Burner does not light after ODS/

1. Burner orifice clogged

1.

Clean burner (see Cleaning and

pilot is lit

 

 

 

Maintenance, pages 16 and 17)

 

 

 

 

or replace burner orifice

 

2.

Inlet gas pressure is too low

2.

Contact local gas company

 

3.

Thermopile leads discon-

3.

Reconnect leads (see wiring

 

 

nected or improperly con-

 

diagram)

 

 

nected

 

 

 

4.

Burners will not come on in

4.

Replace battery in transmitter

 

 

remote position

 

and receiver

 

 

 

 

Delayed ignition burner

1. Manifold pressure is too low

1.

Contact local gas company

 

2.

Burner orifice clogged

2.

Clean burner (see Cleaning and

 

 

 

 

Maintenance, pages 16 and 17)

 

 

 

 

or replace burner orifice

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning and

bustion

 

damaged

 

Maintenance, pages 16 and 17)

 

 

 

 

or replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas control

 

 

 

 

Slight smoke or odor during ini-

1. Not enough air

1.

Check burner for dirt and de-

tial operation

 

 

 

bris. If found, clean burner

 

 

 

 

(see Cleaning and Mainte-

 

 

 

 

nance, pages 16 and 17)

 

2.

Gas regulator defective

2.

Replace gas control

 

3.

Residues from manufacturing

3.

Problem will stop after a few

 

 

processes and logs curing

 

hours of operation

 

 

 

 

Moisture/condensation noticed

1. Not enough combustion/ven-

1.

Refer to Air for Combustion

on windows

 

tilation air

 

and Ventilation requirements

 

 

 

 

(page 5)

110361-01E

www.desatech.com

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Desa Tech S26PTA, S26NTA installation manual Continued, Observed Problem, Possible Cause, Remedy, see Cleaning and Mainte