Troubleshooting
COMPLAINT | CAUSE | REMEDY | |
USER | Qualified Service Agency | ||
*Water not hot enough | Thermostat set too low. | Set thermostat dial to a higher |
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| temperature |
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| Upper and/or lower temperature | Call qualified service agency | Check continuity and resistance (Ohms) |
| probe out of calibration. |
| of upper and lower temperature probes. |
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| Replace probes if out of specification. |
*Insufficient hot water | Thermostat set too low. | Set thermostat dial to a higher |
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*See WATER TEMPERATURE |
| temperature |
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CONTROL WARNING (on page | Upper and/or lower temperature | Call qualified service agency | Check continuity and resistance (Ohms) |
12). | probe out of calibration. |
| of upper and lower temperature probes. |
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| Replace probes if out of specification. |
| Main manual gas shutoff valve | Open main manual gas shutoff |
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| partially closed. | valve to fullest extent. |
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| Heater too small for demand. | Space usage to give heater time |
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| to restore water temperature. |
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| Heater recovery is slower. | Call qualified service agency | Check gas input. If incorrect, check |
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| for inlet air blockage and/or flue gas |
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| exhaust blockage. |
Water temperature too hot. | Thermostat set too high. | Set thermostat to a lower setting. |
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Rumbling. | Sediment accumulation on | Drain a quantity of water through | Delime heater. |
| bottom of tank. | drain valve. If rumbling persists, |
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| call a qualified service agency. |
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Ticking or metallic sounds. | Expansion and contraction - |
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| normal. |
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Pounding or water hammer. | Air chambers in piping have | Drain piping system and refill. | Follow the manufacturer's instructions |
| become waterlogged. Thermal | Heater must be off while this | for proper charging of the thermal |
| expansion tank damaged, | is being done. Check thermal | expansion tank. |
| improperly charged, or | expansion tank charge pressure |
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| improperly sized. | when the water system pressure |
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| is zero. |
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Water leaks. | Drain valve not closed tightly. | If drain valve cannot be closed |
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| tightly, replace. |
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| If leakage source cannot be | Shut off gas supply to heater | Repair or in case of suspected tank |
| corrected or identified, call | and close cold water inlet valve | leakage, be certain to confirm before |
| qualified service agency. | to heater. | replacing heater. |
Gas odors. | Possible gas leaks. | Shut off gas supply to heater |
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| and call gas company at once |
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