Heatiator NB4236M, NB4842M Symptom, Possible Causes, Corrective Actions, Frequent pilot outage

Models: NB3933M NB3630M NB3630MI NB3933MI NB4236M NB4842MI NB4236MI NB4842M

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Symptom

 

Possible Causes

Corrective Actions

4.

Frequent pilot outage

A.

Pilot flame may be too

Clean and adjust the pilot flame for maximum flame impingement on

 

problem.

 

high, too low, or blowing

thermocouple. Follow lighting instructions carefully.

 

 

 

(high), causing pilot safety

 

 

 

 

to drop out.

 

5.

The pilot and main

A.

No LP in the tank.

Check the LP (propane) tank. Refill the fuel tank.

 

burner extinguish while in

 

 

 

 

B.

Inner vent pipe is leaking

Check venting system for damage. Replace/repair improperly assembled

 

operation.

 

 

exhaust gases back into

pipe sections.

 

 

 

 

 

 

the system.

 

 

 

C.

Glass is too loose and

Replace glass panel assembly.

 

 

 

air tight packet leaks in

 

 

 

 

corners after usage.

 

 

 

D.

Bad thermopile or

Replace if necessary.

 

 

 

thermocouple.

 

 

 

E.

Improper vent cap

Check for proper installation and freedom from debris or blockage.

 

 

 

installation.

 

6.

Glass soots.

A.

Flame impingement.

Adjust the log set so that the flame does not excessively impinge on it.

 

 

B.

Improper air shutter

Adjust the air shutter located on the control panel.

 

 

 

setting.

 

 

 

C.

Debris around air shutter.

Inspect the opening at the base of the burner. NO MATERIAL SHOULD BE

 

 

 

 

PLACED IN THIS OPENING.

7.

Flame burns blue and lifts

A.

Insufficient oxygen being

Ensure that the vent cap is installed properly and free of debris.

 

off burner.

 

supplied.

Ensure that the vent system joints are tight and have no leaks.

 

 

 

 

 

 

 

 

Ensure that no debris has been placed at the base of, or in the area of the

 

 

 

 

air holes in the center of, the base pan beneath the burner.

 

 

 

 

Ensure that the glass is tightened properly on the appliance, particularly on

 

 

 

 

top corners.

Heatilator • Novus BV-Mesh4031-553 Rev F • 11/07

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Heatiator NB4236MI, NB4842MI, NB3933MI, NB3630MI Symptom, Possible Causes, Corrective Actions, Frequent pilot outage