Monessen Hearth HVFL18 User Manual

36 

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.  Initial burn off. 

1.  Not enough fresh air is available for ODS/ 

pilot to operate.

2.  Low line pressure.

3.  ODS/pilot is partially clogged.

4.  Defective Thermopile.

5.  Restrictions in incoming air flow. 

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.  ODS/pilot is clogged.

6.  Gas regulator setting is not correct.

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 causing 

products while heater is running.

2.  Locate and correct all leaks.

3.  Ventilate  room  and  turn  unit  on  high 

until odor is gone. Odor should be gone 

after 2 to 3 hours of continuous use. 

1.  Open window and/or door for ventila-

tion.

2.  Contact local gas company.

3.  Clean ODS/pilot.

4.  Check wire connections. Check output 

should be 500 milli-volts across TH/TP 

and TP Terminals with ON/OFF switches 

off.

5.  Check for bottom riser on glass door, 

sunken fireplace, excessive lava rock/

cinders densely packed against grate. 

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 ODS/pilot assembly or get it 

serviced.

6.  Check incoming pressure. Replace gas 

regulator.