12

TROUBLESHOOTING

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Whenignitorbuttonispressed,thereisspark

1.

Gas supply turned off or equipment

1.

Turn on gas supply or open equipment

at pilot but no ignition (GA9050A Only)

 

shutoff valve closed

 

shutoff valve

 

2.

Control knob not in PILOT position

2.

Turn control knob to PILOT position

 

3.

Control knob not pressed in while in

3.

Press in control knob while in PILOT

 

 

PILOT position

 

position

 

4.

Air in gas lines when installed

4.

Continue holding down control knob.

 

 

 

 

Repeat igniting operation until air is

 

5.

Pilot adjustment screw closed

 

removed

 

5.

Adjust pilot flame for approximately

 

6.

Pilot is clogged

 

2" blue flame

 

6.

Clean pilot (see Cleaning and Mainte-

 

7.

Low gas pressure

 

nance, page 11) or replace pilot assem-

 

 

bly

 

 

 

7.

Replace gas control

Pilot lights but flame goes out when control

1.

Control knob not fully pressed in

 

 

2.

Control knob not pressed in long

1.

Press in control knob fully

knob is released (GA9050A Only)

 

enough

2.

After pilot lights, keep control knob

 

3.

Equipment shutoff valve not fully

 

pressed in 30 seconds

 

3.

Fully open equipment shutoff valve

 

 

open

4.

A) Contact local natural gas company

 

4.

Pilot flame not touching thermocouple,

 

 

 

 

which allows thermocouple to cool,

 

B) Clean pilot (see Cleaning and Main-

 

 

causing pilot flame to go out. This prob-

 

tenance, page 11) or replace pilot as-

 

 

lem could be caused by one or both of

 

sembly

 

 

the following:

 

 

 

 

A) Low gas pressure

 

 

 

 

B) Dirty or partially clogged pilot

 

 

 

5.

Thermocouple connection loose at con-

5.

Hand tighten until snug, then tighten

 

 

trol valve

 

1/4 turn more

 

6.

Thermocouple damaged

6.

Replace thermocouple

 

7.

Control valve damaged

7.

Replace control valve

 

 

 

 

 

Burner does not light after pilot is lit

1.

Burner orifice clogged

1.

Clean burner orifice

(GA9050A Only)

2.

Inlet gas pressure is too low

2.

Contact local natural gas company

 

3.

Thermocouple leads disconnected or

3.

Reconnect leads

 

 

 

 

 

improperly connected

 

 

 

 

 

 

 

Delayed ignition burner (GA9050A Only)

1.

Pilot flame needs adjusting

1.

Adjust pilot flame for approximately

 

2.

Wrong pilot orifice

 

2" blue flame

 

2.

Replace pilot orifice set

For more information, visit www.desatech.com

115043-01

Page 12
Image 12
Desa RGA 2-72 installation manual Observed Problem Possible Cause Remedy

RGA 2-72 specifications

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