Roubleshooting – Monessen Hearth B-Vent Specialty Gas Fireplace System DESIGNER SERIES User Manual

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ROUBLESHOOTING

While the manufacturer has made every reasonable effort to ensure that this appliance operates properly
and satisfactorily, sometimes problems do arise. The following troubleshooting chart lists several problems
with their probable cause and remedy. Any adjustments and/or replacements must be by a qualified
person. Do not replace any component with a different type. Use only components supplied by the
manufacturer for this appliance.

Trouble

Flame
too Large

Noisy Flame

Yellow or
Excessive Flame

Floating Flame

Delayed Ignition

Failure to Ignite

Burner Won’t Turn Off

Burner Won’t Turn On

Burner & Pilot
Flame Go Out

Probable Cause

1. Pressure Regulator Set too Hi
2. Defective Regulator
3. Burner Orifice too Large

1. Too Much Primary Air
2. Noisy Pilot
3. Burr in Orifice

1. Too Little Primary Air
2. Clogged Burner Ports
3. Misaligned Orifices
4. Clogged Vent System

1. Blocked Venting
2. Insufficient Primary Air

1. Improper Pilot Location
2. Pilot Flame too Small
3. Burner Ports Clogged
4. Low Pressure

1. Main Gas Off
2. Defect in Gas Valve

1. Defective Auto Valve

1. Defective Auto Valve
2. Defective Thermocouple
3. Defective Switch
4. Defective Auto Pilot Valve

1. Poorly Functioning

Vent System

2. Gas Supply Interrupted

3. Defective Thermocouple

or Control

Remedy

1. Reset, Using Manometer
2. Replace
3. Replace with Correct Size

1. Adjust Air Shutters
2. Reduce Pilot Gas
3. Remove Burr or Replace

1. Adjust Air Shutters
2. Clean Ports
3. Realigned or Replace Burner
4. Clean

1. Clean
2. Adjust Air Shutter

1. Reposition Pilot
2. Check Orifice, Increase Gas
3. Clean Ports
4. Adjust Pressure Regulator

1. Open Manual Valve
2. Replace

1. Clean or Replace

1. Replace
2. Replace
3. Repair or Replace
4. Replace

1. If Pilot can be Relit but Main Burner & Pilot Go

Off After Ignition, Have Vent System Checked
and Corrected Immediately.

2. Try Relighting Pilot and Main Burner. If Pilot

won’t Relight, Check Thermocouple & Control

3. Replace

53D9019.

Rev 3 11/07