Monessen Hearth VDY24/18, Installation And Operating Instructions Manual

32D1999 

27

OBSERVED PROBLEM

When ignitor button is pressed, 
there is no spark at pilot.

Appliance produces 
unwanted odors.

Appliance shuts off during use.

Gas odor even when control 
knob is in OFF position.

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

Pilot lights, but flame goes out 
when control knob is released.

Note:  All troubleshooting items are listed in order of operation.

POSSIBLE CAUSE

1.   Ignitor electrode positioned wrong.
2.   Ignitor electrode is broken.
3.   Ignitor electrode not connected to 

ignitor  cable.

4.   Ignitor cable pinched or wet. Keep ignitor 

cable dry.

5.   Broken ignitor cable.
6.  Bad piezo ignitor.

1.   Appliance burning vapors from paint, hair 

spray, glues, etc.

2.   Gas leak.
3.  Fireplace Spilling

1.  Low line pressure.
2.  Pilot is partially clogged.
3.  Defective Thermopile

1.  Gas leak.
2.  Control valve defective.

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.  Pilot is clogged.

6.  Gas regulator setting is not correct.

1.  Control knob not fully pressed in.
2.  Control knob not pressed in long enough.

3.  Manual shutoff valve not fully open.

REMEDY

1  Replace ignitor.
2.  Replace ignitor.
3.  Reconnect ignitor cable.
4.  Free ignitor cable if pinched by any 

metal or tubing.

5.  Replace ignitor cable.
6.  Replace piezo ignitor.

1.  Ventilate room. Stop using odor caus-

ing products while heater is running.

2.  Locate and correct all leaks.
3.  Check fireplace, adjust damper posi-

tion to eliminate spillage (backdraft)

1.  Contact local gas company.
2.  Clean pilot.
3.  Check pilot flame, check wire connec-

tions, check output, should be 325 mil-
livolts across TH/TP and TP Terminals 
with ON/OFF switches off.

1.  Locate and correct all leaks.
2.  Replace control valve.

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.  Replace pilot assembly or get 

it serviced.

6.  Replace gas regulator

1.  Press in control knob fully.
2.  After pilot lights, keep control knob 

pressed in for 30 seconds.

3.  Fully open manual shutoff valve.

TROUBLESHOOTING

Turn appliance OFF and allow to cool 
before  servicing.    Only  a  qualified 
service  person  should  service  and 
repair the heater.

W

ARNING