Possible Causes; Corrective Action - COZY W255G Instructions D'installation Et D'utilisation

TROUBLESHOOTING CHART ( FOR QUALIFIED SERVICE TECHNICIAN ) - MAIN BURNER
SYMPTOM

POSSIBLE CAUSES

Flame Too 1. Defective operator section
Large
of gas valve.
2. Burner orifice too large.
3. If installed above 2,000 ft.
Flame Pops
1. Too much primary air.
Back
1. Too much primary air.
Noisy
Flame
2. Noisy pilot.
3. Burr in orifice
(if it whistles or resonates).
4. Excessive gas input.
1. Too little primary air.
Yellow
Tip Flame
2. Clogged main burner ports.
(Some yellow
3. Clogged draft hood.
tipping on Propane
4. Linted up air shutter.
gas is permissible)
1. Blocked venting.
Floating
Flame
2. Insufficient primary air.
Gas 1. Gas leak.
Odor
2. Chimney or flue obstruction.
3. Drafts around appliance.
Delayed 1. Pilot flame too small.
Ignition
2. Burner ports clogged near pilot.
3. Low gas pressure.
4. Pilot decreases in size when main
burners come on.
5. Air shutter open too far.
6. Drafts around appliance.
7. Bad venting.
Failure to
1. Main gas off.
Ignite
2. Defective gas valve.
Condensation 1. Improper venting.
of Water Vapor
Burner Won't
1. Defective or sticking
Turn Off
automatic valve.
2. Excessive gas pressure
(The supply gas pressure must not
exceed 1/2 psi or 14" water column).
Please follow the following corrective actions in order.
1. Replace complete valve.
2. Check with local gas company for proper orifice size & replace.
3. Refer to orifice chart, Page 5.
1. Adjust air shutter. (See Page 14).
1. Adjust air shutter. (See Page 14).
2. Reduce pilot gas with adjusting screw on combination gas
control valve.
3. Remove burr or replace orifice (Do not enlarge orifices).
4. See "Flame Too Large" above.
1. Adjust air shutter. (See Page 14).
2. Clean main burner ports. (Do not enlarge ports).
3. Clean draft hood.
4. Check for dust or lint at air mixer opening & around the shutter. Clean as necessary.
1. Clean flue passageways to remove blockage.
2. Adjust air shutter to increase primary air supply. (See Page 14).
1. Shut off gas service immediately. Check piping. Call gas company. (See Page 1).
2. Clean flue.
3. Eliminate drafts.
1. Check pilot orifice, increase pilot gas flow if necessary by adjusting inlet pressure.
2. Clean burner ports (Do not enlarge ports).
3. Check gas supply pressure.
4. Supply piping is inadequately sized. Consult local gas utility or competent installer.
5. Close air shutter to proper setting as outlined in these instructions (slight yellow tipping is
allowable on Propane Gas). (See Page 14).
6. Eliminate drafts.
7. See "Venting".
1. Open all manual gas valves.
2. Replace gas valve.
1. See "Venting".
1. Clean or replace valve.
2. To correct this situation contact the utility supplying the gas.
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CORRECTIVE ACTION

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