Monessen Hearth CFX24 User Manual

28

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

1.  Ignitor electrode positioned wrong.

1  Replace ignitor.

2.  Ignitor electrode is broken.

2. Replace ignitor.

3.  Ignitor electrode not connected to ignitor 

cable.

3. Reconnect ignitor cable.

4.  Ignitor cable pinched or wet. Keep ignitor 

cable dry.

4. Free ignitor cable if pinched by any metal 

or tubing.

5.  Broken ignitor cable.

5. Replace ignitor cable.

6.  Bad piezo ignitor.

6. Replace piezo ignitor.

Appliance produces 
unwanted odors.

1.  Appliance burning vapors from paint, hair 

spray, glues, etc.

1. Ventilate room. Stop using odor causing 

products while heater is running.

2.  Gas leak.

2. Locate and correct all leaks.

3. Initial burn off

3. Ventilate room and turn unit on high until 

odor is gone. Odor should be gone after 2 
to 3 hours of continuous use.

Appliance shuts off during 
use.

1. Not enough fresh air is available for 

ODS/ pilot to operate.

1. Open window and/or door for ventilation.

2. Low line pressure.

2. Contact local gas company.

3. ODS/pilot is partially clogged.

3. Clean ODS/pilot.

4. Defective Thermopile.

4. Check wire connections. Check output 

should be 500 milli-volts across TH/TP 
and TP Terminals with ON/OFF switches 
off.

5. Restrictions in incoming air flow.

5. Check for bottom riser on glass door, 

sunken fireplace, excessive lava rock/
cinders densely packed against grate.

Gas odor even when 
control knob is in OFF 
position.

1. Gas leak.

1. Locate and correct all leaks.

2. Control valve defective.

2. Replace control valve.

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

1. Gas supply turned off or manual shutoff 

valve closed.

1. Turn on gas supply or open manual shutoff 

valve.

2. Control knob not in PILOT position.

2. Turn control knob to PILOT position.

3. Control knob not pressed in while in 

PILOT position.

3. Press in control knob while in PILOT 

position.

4. Air in gas lines when installed.

4. Continue holding down control knob. 

Repeat igniting operation until air is 
removed.

5. ODS/pilot is clogged.

5. Replace ODS/pilot assembly or get it 

serviced.

6. Gas regulator setting is not correct.

6. Check incoming pressure. Replace gas 

regulator.