Troubleshooting Charts - COZY 90N30A Installation And Operating Instructions Manual

SYMPTOM
Flame 1. Defective operator section of valve.
Too Large
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. Bun in orifice
(if it whistles or resonates).
4. Excessive gas input.
Yellow 1. Too little primary air.
Tip Flame
2. Clogged main bumer ports.
3. Clogged draft hood.
(Some yellow
tipping on propane
4. Linted up air shutter.
gas is permissible)
Floating 1. Blocked venting.
Flame
2. Insufficient primary air.
Gas 1. Chimney or vent obstruction.
Odor
2. Drafts around appliance.
3. Gas leak.
Delayed 1. Pilot flame too small.
Ignition
2. Burner ports clogged near pilot.
3. Low gas pressure.
4. Pilot decreases in size
when main bumers come on.
5. Air shutter open too far.
6. Drafts around appliance.
7. Bad venting.
1. Main gas off.
Failure
to Ignite
2. Defective gas valve.
1. Improper venting.
Condensation
of Water Vapor
Burner Won't 1. Defective or sticking automatic valve.
Tum Off
2. Excessive gas pressure
(The supply gas pressure must not
exceed 1/2 psi or 14" water column).
1017826-A
TROUBLESHOOTING CHART - ( Main Burner )
FOR QUALIFIED SERVICE TECHNICIAN
POSSIBLE CAUSES CORRECTIVE ACTION
1. Replace complete valve.
2. Check with local gas company for proper orifice size and replace.
3. See burner orifice section, Page 13.
1. Adjust air shutter. See Page 13.
1. Adjust air shutter. See Page 13.
2. Reduce pilot gas with adjusting screw marked pilot on combination
gas control valve. See Page 13.
3. Remove bun or replace orifice. (Do not enlarge orifices).
4. See "Flame Too Large" section above.
1. Adjust air shutter. See page 13.
2. Clean main bumer ports. (Do not enlarge ports).
3. Clean draft hood.
4. Check for dust or lint at air mixer opening and around the shutter.
1. Clean flue passage ways to remove blockage.
2. Adjust air shutter to increase primary air supply.
1. Clean chimney or vent - replace if necessary.
2. Eliminate drafts.
3. See Page 1.
1. Check pilot orifice, close, increase pilot gas flow if necessary
by adjusting at combination control valve. See Page 13.
2. Clean burner ports (Do not enlarge pmts).
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).
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 conect this situation contact the utility supplying the gas.
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