TROUBLE- SHOOTING

OBSERVED

POSSIBLE

 

PROBLEM

CAUSE

REMEDY

 

 

 

Continued

When control knob is pressed in and turned to the PILOT/IGN position, there is spark at ODS/pilot but no ignition

1.Gas supply turned off or manual shutoff valve closed

2.Control knob not pressed in while being turned to PILOT/IGN position

3.Air in gas lines when installed

4.ODS/pilot is clogged

5.Gas regulator setting is not correct

1.Turn on gas supply or open manual shutoff valve

2.Press in control knob while turning to PILOT/IGN position

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

4.Clean ODS/pilot (see Cleaning and Mainte- nance, page 22) or replace ODS/pilot assembly

5.Replace gas regulator

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 10 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 22)

 

 

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

Continued

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23

Page 23
Image 23
Desa CGN18RA, CGN30D installation manual TROUBLE- Shooting, See Cleaning

CGN30D, CGN18RA specifications

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