Monessen Hearth NB18, NB24 Troubleshooting, Observed Problem Possible Cause Remedy

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TROUBLESHOOTING

 

WARNING

 

WARNING

 

 

 

Turn appliance OFF and allow to cool before

 

 

 

servicing. Only a qualified service person

 

 

 

should service and repair the heater.

 

 

 

 

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

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

When ignitor button is

1.

Ignitor electrode positioned wrong.

1

Replace ignitor.

pressed, there is no spark at

 

 

 

 

ODS/pilot.

 

 

 

 

2.

Ignitor electrode is broken.

2.

Replace ignitor.

 

 

 

 

 

 

 

3.

Ignitor electrode not connected to ignitor

3.

Reconnect ignitor cable.

 

 

cable.

 

 

 

 

 

 

 

 

4.

Ignitor cable pinched or wet. Keep ignitor

4.

Free ignitor cable if pinched by any metal or

 

 

cable dry.

 

tubing.

 

 

 

 

 

 

5.

Broken ignitor cable.

5.

Replace ignitor cable.

 

6.

Bad piezo ignitor.

6.

Replace piezo ignitor.

Appliance produces

1. Appliance burning vapors from paint, hair

1.

Ventilate room. Stop using odor causing

unwanted odors.

 

spray, glues, etc.

 

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 6 hours of

 

 

 

 

continuous use.

Appliance shuts off during

1. Not enough fresh air is available for ODS/

1.

Open window and/or door for ventilation.

use.

 

pilot to operate.

 

 

 

 

 

 

 

 

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 Millivolts 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

1. Gas leak.

1.

Locate and correct all leaks.

knob is in OFF position.

2.

Control valve defective.

2.

Replace control valve.

 

When ignitor button is

1. Gas supply turned off or manual shutoff

1.

Turn on gas supply or open manual shutoff

pressed, there is spark at

 

valve closed.

 

valve.

ODS pilot, but no ignition.

 

 

 

 

2.

Control knob not in PILOT position.

2.

Turn control knob to PILOT position.

 

 

3.

Control knob not pressed in while in PILOT

3.

Press in control knob while in PILOT position.

 

 

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.

81D0107

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Image 31
Contents Read and Save These Instructions Model NB18, NB24What to do if YOU Smell GAS Contents Installer Important Safety InformationOwner Massachussetts Residents only Getting Started What YOU will Need for InstallationMake Sure YOU have Received ALL Parts Product Features and Specifications Codes General Installation InformationAdequate Combustion and Ventilation AIR BTU / Hr = Model Fireplace and Hearth DimensionsHeight of Restriction Minimum Depth of Fireplace/Firebox Placement in a Fireplace with a Restrictive BarrierSidewall and Ceiling Clearances Clearances and Height RequirementsClearances and Height Requirements Measuring Heat Resistant Material for Mantel Minimum Mantel Clearance with No Hood -NB18 Mum of 10 at a minimum of 28 above the opening Minimum Clearance above Combustible Flooring Floor ClearanceDamper Stop Installation Installing Vented ApplicationsBefore Fully Installing the Unit Before Installing the ApplianceAssembly Procedure Installing Vented ApplicationsPlacing and Securing Appliance Flexible Tube Manual Shutoff Gas Supply Inlet Valve Connecting the GASMillivolt Valve Control Figure Checking GAS PressureConnecting Optional Wall Switch or Thermostat Electrical Wiring MillivoltATE Checking System Operation Connecting Remote ReceiverComplete Millivolt System Check Placing Rock Wool LOG PlacementPlacing Log #3 Placing the Decorative Rock EMBER, GRATE, and Rock InstallationCast Iron Grate Installation Placing Flickering EmbersChecking the Pilot Flame Flame AppearanceMillivolt Control and Thermostat Control Operating Instructions Checking the Burner FlameWhat to do if YOU Smell GAS Operating InstructionsTo Turn OFF GAS to Heater Cleaning and Servicing Operating Instructions and Cleaning and ServicingObserved Problem Possible Cause Remedy TroubleshootingODS/pilot lights, but flame Burner Assembly Replacement PartsAccessories Sold Separately Replacement Parts ListDescription Qty BO18-R BO18-F BO24-R BO24-F BO30-R BO30-F Berkley OAK Refractory LogsCarbon Monoxide Detector Requirements Special Requirements 81D0107 81D0107 Five Year Warranty Lifetime WarrantyBasic Warranty