TROUBLESHOOTING
These guidelines should be utilized by a qualified service agent.
Problem | Possible Cause(s) | What to do |
NOT ENOUGH HOT WATER | STANDBY button turned off. | Press switch to turn heater on. |
| No power at outlet. | Repair service to outlet. |
| Error Code being displayed | Refer to “FAULT INDICATION AND |
|
| ERROR CODES” section and Table |
|
| 5 or call service agency or dealer. |
| Set point set too low. | Adjust Set point higher. |
| Heater undersized. | Reduce hot water use. |
| Low gas pressure | Contact dealer. |
| Incoming water is usually cold. | Allow more time for heater to reheat. |
| Leaking hot water pipes of fixtures. | Have plumber check and repair |
|
| leaks. |
CONDENSATION | Water on the floor under heater. | See CONDENSATE section. |
WATER LEAKS | Improperly sealed, hot or cold supply | Check for leaks. See Figure 40. |
| connections, relief valve, drain valve |
|
| or thermostat threads. |
|
| Leakage from other appliances or | Inspect other appliances near water |
| water lines. | heater. |
| Condensation of flue products. | Refer to CONDENSATE section. |
LEAKING T&P | Thermal expansion in closed water | Install thermal expansion tank (Do |
| system. | not plug T&P valve). |
| Improperly sealed valve. | Check relief valve for proper |
|
| operation (Do not plug T&P valve). |
HOT WATER ODORS (refer to | High sulfate or mineral content in | Drain and flush heater thoroughly |
cathodic protection) | water supply. | then refill. |
| Bacteria in water supply. | Chlorinate water supply. |
HOT WATER TOO HOT | Thermostat set too high. | Refer to TEMPERATURE |
|
| REGULATION section. |
WATER HEATER SOUNDS | Condensation dripping on burner. | Refer to CONDENSATE above. |
SIZZLING - RUMBLING NOISE | Sediment at bottom of heater tank. | Clean sediment from tank. Refer to |
|
| DRAINING. |
SOOTING | Improper combustion. | Refer to Air Requirements. |
BURNER WILL NOT STAY LIT- | High ambient room temperature. | Contact a qualified service agency to |
GOES OUT |
| determine cause. |
| Defective Control board. | Replace Control board. |
| Damaged Flame Sensor | Replace Flame Sensor |
| (Error code E35) |
|
VENT GAS ODORS | Lack of air supply. | Shut off water heater immediately |
| Improperly installed vent piping. | and contact a qualified service |
|
| agency to determine cause. |
| Downdraft | |
|
| |
| Poor Combustion |
|
THERE IS NO WATER AT ALL | The unit display is flashing an error | Check if there is any error code |
WHEN THE HOT WATER TAP IS | code. | flashing on the remote controller. |
OPENED. |
|
|
| TABLE 6 |
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