TROUBLE- SHOOTING

OBSERVED

POSSIBLE

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

Continued

When ignitor button is pressed, there is spark at ODS/pilot but no ignition

1.Gas supply turned off or manual shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.ODS/pilot is clogged

6.Gas regulator setting is not correct

1.Turn on gas supply or open manual shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down control knob. Repeat igniting operation until air is removed

5.Clean ODS/pilot (see Cleaning and Mainte- nance, page 21) or replace ODS/pilot assembly

6.Replace gas regulator

22

ODS/pilot lights but

1.

Control knob not fully

1.

Press in control knob

flame goes out when

 

pressed in

 

fully

control knob is

2.

Control knob not

2.

After ODS/pilot lights,

released

 

pressed in long enough

 

keep control knob

 

 

 

 

pressed in 30 seconds

 

3.

Manual shutoff valve

3.

Fully open manual

 

 

not fully open

 

shut-off valve

 

4.

Thermocouple connec-

4.

Hand tighten until

 

 

tion loose at control

 

snug, then tighten 1/4

 

 

valve

 

turn more

 

5.

Pilot flame not touch-

5.

A) Contact local

 

 

ing thermocouple,

 

natural gas company

 

 

which allows thermo-

 

 

 

 

couple to cool, causing

 

B) Clean ODS/pilot

 

 

pilot flame to go out.

 

(see Cleaning and

 

 

This problem could be

 

Maintenance, page 21)

 

 

caused by one or both

 

or replace ODS/pilot

 

 

of the following:

 

assembly

 

 

A) Low gas pressure

 

 

 

 

B) Dirty or partially

 

 

 

 

clogged ODS/pilot

 

 

 

6.

Thermocouple dam-

6.

Replace thermocouple

 

 

aged

 

 

 

7.

Control valve damaged

7.

Replace control valve

 

 

 

 

 

Burner does not light

1.

Burner orifice is

1.

Clean burner (see

after ODS/pilot is lit

 

clogged

 

Cleaning and Mainte-

 

 

 

 

nance, page 21) or

 

 

 

 

replace burner orifice

100096

Page 22
Image 22
Desa CGN18B, RN30B installation manual TROUBLE- Shooting, Maintenance

RN30B, CGN18B specifications

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