Troubleshooting (cont’d)
| PROBLEM | CAUSE | SOLUTION | ||||
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| Blower will not run. |
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| A) “ON/OFF” control switch turned off. | Turn switch to the “ON” position. |
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| B) Blower unplugged. | Plug blower back into 115 VAC. outlet. |
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| C) No power at outlet. | Repair service to outlet. |
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| D) Thermostat defective. | Replace thermostat. |
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| E) Control harness defective. | Replace control harness. |
| NOT ENOUGH |
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| F) High limit control circuit open. | Replace ECO. | |
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| G) Blower motor defective. | Replace Blower Assembly. | ||
| HOT WATER | Thermostat problems. |
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| A) Thermostat set too low. | Set temperature control higher. |
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| B) Thermostat or ECO defective. | Replace thermostat or ECO as required. |
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| Others |
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| A) Heater undersized. | Reduce hot water use. |
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| B) Low gas pressure. | Contact dealer. |
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| C) Incoming water is unusually cold. | Allow more time for heater to reheat. |
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| D) Leaking hot water pipes or fixtures. | Have plumber check and repair leaks. |
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| A) Not enough dilution air to mix with | Proper dilution air must be provided for dilution |
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| flue gases. | of flue temp. Refer to “INSTALLING THE NEW |
| VENT PIPE TOO HOT |
| WATER HEATER” section. | ||||
| (ABOVE 170˚F) |
| B) Dilution air too hot for mixing with | Check for heat sources around and/or blockage | |||
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| flue gases. | of dilution air intake at draft hood. (See page 25). |
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| C) Wrong burner orifice. | Install correct orifice. |
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| A) Dirt in burner ports | Turn off heater and gas, clean burner head. |
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| B) Combustion air path restricted. | Check dilution air intake exhaust venting, and |
| YELLOW FLAME |
| air openings in bottom base pan for obstructions | ||||
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| or blockage. |
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| C) Not enough dilution air for proper | Check dilution air intake for obstructions or |
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| combustion. | blockage. |
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| A) Water on the floor under heater. | See “CONDENSATION” section. |
| CONDENSATION |
| B) Water dripping from blower assembly. | Provide drip “TEE” to catch condensation from | |||
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| horizontal section of exhaust vent close to |
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| blower assembly. |
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| Improperly sealed, hot or cold supply | Tighten threaded connections. |
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| connections, relief valve, drain valve |
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| WATER LEAKS | or thermostat threads. |
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| Leakage from other appliances or water | Inspect other appliances near water heater. |
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| lines. |
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| Condensation of flue products. | See “CONDENSATION” section. |
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| Thermal expansion in closed water | Install thermal expansion tank (DO NOT plug |
| LEAKING T&P | system. | T&P valve). | ||||
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| Improperly seated valve. | Check relief valve for proper operation |
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| (DO NOT plug T&P valve). |
| HOT WATER ODORS | High sulfate or mineral content in | Drain and flush heater thoroughly then refill. | ||||
| (Refer to SMELLY WATER) | water supply. |
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| Bacteria in water supply. | Chlorinate water supply. |
| WATER TOO HOT | Thermostat set too high. | Refer to TEMPERATURE REGULATION. | ||||
| WATER HEATER SOUNDS | Condensation dripping on burner. | See “CONDENSATION” section. | ||||
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| Sediment at bottom of heater tank. | Clean sediment from tank. Refer to DRAINING | ||||
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| instruction in Maintenance section of manual. |
| SOOTING | Improper combustion. | Refer to COMBUSTION AIR AND VENTILATION | ||||
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| on pages 9, 10 and 11. |
| HEATER LIGHTS BUT | Outlet polarity is reversed. | Test polarity and correct. | ||||
| GOES OUT IN |
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| SECONDS |
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37
