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TROUBLESHOOTING CHART
PROBLEM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
NO HOT WATER
1. Transformer unplugged.
2. No power at outlet.
3. Thermostat defective.
4. Air Intake Chamber Fan defective.
5. Pressure Switch defective.
6. Gas Valve/Thermostat Switch in “OFF
POSITION”.
1. Plug transformer back into 120 VAC. outlet.
2. Repair service to outlet.
3. Replace Thermostat.
4. Replace Air Intake Chamber Fan Assembly.
5. Replace Pressure Switch Assembly.
6. Move Gas Valve/Thermostat Switch to “ON POSI-
TION”.
INSUFFICIENT HOT WATER
1. Thermostat set too low.
2. Thermostat defective.
3. Heater undersized.
4. Low gas pressure.
5. Incoming water is unusually cold.
6. Leaking hot water pipes or fixtures.
1. Set temperature control higher.
2. Replace thermostat.
3. Reduce hot water use.
4. Contact dealer.
5. Allow more time for heater to reheat.
6. Have plumber check and repair leaks.
SLOW HOT WATER
RECOVERY
1. Low gas pressure.
2. Improper calibration.
3. Thermostat set too low.
4. Water heater too small.
5. Wrong piping connections.
6. Wasted hot water.
1. Check with gas utility company.
2. Replace thermostat.
3. Turn temperature dial to desired setting.
4. Install adequate heater.
5. Correct piping-dip tube must be in cold inlet.
6. Advise customer.
WATER TOO HOT
1. Thermostat set too high.
1. Set temperature control lower.
see, “WATER TEMPERATURE REGULATION”,
section.
BURNER FLAME
YELLOW - LAZY
1. Dirt in burner ports.
2. Combustion air path restricted.
3. Not enough dilution air for proper com-
bustion.
4. Main burner line clogged.
5. Obstruction in main burner orifice.
6. Burner flame too high.
7. Flame burns at orifice/thermostat not
functioning properly.
8. Low gas pressure.
1. Turn off heater and gas, clean burner head.
2. Check intake venting arrangements for obstruc-
tions.
3. Check intake venting arrangements for obsruc-
tions.
4. Clean, locate source and correct.
5. Clean or replace orifice.
6. Check orifice and replace if necessary.
7. Replace thermostat
8. Check with gas utility company.
BURNER FLAME FLOATS
AND LIFTS OFF PORTS
1. Orifice too large/wrong orifice.
2. High gas pressure.
3. Water heater flue or vent system
blocked.
4. Cold drafts.
1. Replace with correct-orifice.
2. Check with gas utility company.
3. Clean flue and burner-locate source and correct.
4. Locate source and correct.
COMBUSTION ODORS
1. Insufficient secondary air.
2. Water heater flue or vent system
blocked.
3. Heater installed in a confined area.
1. Provide ventilation to water heater. Check
flue.
2. Clean, locate source and correct.
3. Provide fresh air ventilation.
Pressurized Combustion Chamber System
Operational Checklist
1. Manifold gasket properly sealed.
2. Viewport not damaged or cracked.
3. Combustion chamber free of debris and undamaged.
4. Manifold component block properly installed.
5. No leaks at manifold connection.
6. Manifold door screws securely tightened.
