TROUBLESHOOTING GUIDE (Continued)
PROBLEM |
| POSSIBLE CAUSE(S) |
| CORRECTIVE ACTION |
DRIP FROM RELIEF VALVE | 1. | Excessive water pressure | 1. | Use a pressure reducing valve and relief |
| 2. | Closed water system | 2. | valve |
| See “Thermal Expansion” | |||
THERMOSTAT FAILS TO | 1. | 1. | Replace thermostat | |
SHUT OFF | 2. | Improper calibration | 2. | Replace thermostat |
COMBUSTION ODORS | 1. | Insufficient air | 1. | Provide ventilation to water heater. |
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| Check flue |
| 2. | Water heater flue or vent system blocked. | 2. | way, flue baffle, and burner |
| Clean, locate source and correct | |||
| 3. | Heater installed in a confined area | 3. | Provide fresh air ventilation |
SMOKING AND CARBON | 1. | Flammable vapor incident | 1. | Call |
FORMATION (SOOTING) |
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CONDENSATION | 1. | Temperature setting too low | 1. | Increase the temperature setting |
BURNER FLAME FLOATS | 1. | Orifice too large | 1. | Replace with correct orifice |
AND LIFTS OFF PORTS | 2. | High gas pressure | 2. | Check with gas utility company |
| 3. | Water heater flue or vent system blocked. | 3. | Clean flue and |
| 4. | Cold drafts | 4. | correct |
| Locate source and correct | |||
| 5. | Dirty burner screen | 5. | Clean burner screen. See “Ultra Low |
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| NOx Natural Gas Burner” section of this |
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| manual. |
FLAME BURNS AT ORIFICE | 1. | 1. | Replace thermostat | |
| 2. | Low gas pressure | 2. | Check with gas utility company |
| 3. | 3. | Replace burner assembly | |
PILOT FLAME TOO SMALL | 1. | Pilot line or orifice clogged | 1. | Clean, locate source and correct |
| 2. | Low gas pressure | 2. | Check with gas utility company |
| 3. | Dirty pilot | 3. | Clean pilot |
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