TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Heater shuts off in use (ODS op-

1.

Not enough fresh air is avail-

1.

Open window and/or door for

erates)

 

able

 

 

ventilation

 

2.

Low line pressure

2.

Contact local natural or pro-

 

 

 

 

 

pane/LP gas company

 

3.

ODS/pilot

is partially

3.

Clean ODS/pilot (see Cleaning

 

 

clogged

 

 

and Maintenance, page 23)

 

 

 

 

 

Gas odor even when control knob

1.

Gas leak. See Warning

1.

Locate and correct all leaks (see

is in OFF position

 

statement on page 27

 

Checking Gas Connections,

 

 

 

 

 

page 15)

 

2.

Control valve defective

2.

Replace control valve

 

 

 

 

 

Gas odor during combustion

1.

Foreign matter between con-

1.

Take apart gas tubing and re-

 

 

trol valve and burner

 

move foreign matter

 

2.

Gas leak. See Warning

2.

Locate and correct all leaks (see

 

 

statement on page 27

 

Checking Gas Connections,

 

 

 

 

 

page 15)

 

 

 

 

 

 

Log set cycles to pilot, but room

1.

Thermostat

sensing bulb

1.

Reposition thermostat sensing

temperature drops to a lower than

 

needs to be repositioned

 

bulb (see Optional Positioning

ideal level before log set comes

 

 

 

 

of Thermostat Sensing Bulb,

back on

 

 

 

 

page 28

OPTIONAL POSITIONING

OF THERMOSTAT

SENSING BULB

FOR MASONRY AND FACTORY- BUILT METAL FIREPLACE

If your log set cycles to pilot, but the room tem- perature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermostat sensing bulb.

The thermostat sensing bulb is located near the gas valve assembly on the mounting bracket. This location allows the thermostat to keep the room temperature at an ideal comfort level for most fire- place applications. For positioning the thermostat sensing bulb elsewhere, an adhesive-backed mounting clip is available.

Tools needed: 1/4" hex driver or socket

1.Remove logs. Locate the gas valve assembly and thermostat sensing bulb (see Figure 34).

2.With 1/4" hex driver or socket, loosen the ther- mostat screw. Carefully slide the thermostat sensing bulb out of the retaining clamp (see Figure 36, page 29).

Note: Do not remove the screw. Make sure you tighten the screw after removing the ther- mostat sensing bulb.

IMPORTANT: Do not force or bend the ther- mostat sensing bulb or capillary.

Gas Valve

Assembly

Mounting

BracketThermostat

Sensing Bulb

Figure 34 - Location of Gas Valve

Assembly and Thermostat Sensing Bulb

Figure 35 - Adhesive-backed Mounting

Clip

28

www.desatech.com

113101-01A

Page 28
Image 28
Desa CLD3924NTB Optional Positioning Thermostat Sensing Bulb, For Masonry and FACTORY- Built Metal Fireplace, Statement on

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