Where do I find the failure code on my tankless water heater?
As most of the newer advanced tankless water heaters utilize the self-diagnostic system and are equipped with the LCD display on the unit or remote controller, a numerical error code will display or flashing light. Here are the ignition failure codes found on some tankless brands:
What does fault code 11 mean on a Bosch tankless water heater?
Bosh fault code 11 – Indicates a problem with the tankless water heater’s ignition. Typically, if you receive this fault code, your unit will not work. Before calling a licensed plumber, check to make sure your gas valve is open and supplying gas to the unit. Bosch fault code 29 – Indicates a possible clog in the unit’s neutralizer.
What causes an ignition failure on a tankless water heater?
The ignition failure on tankless water heaters can occur to any brand and model, no matter how advanced or not is. The failure can be caused by a problem inside the water heater or due to an external cause.
What to do if your Rheem tankless has an error code?
Issues surrounding the thermistor, such as wiring. Check the wiring: Ensure there’s no damage in the thermistor wiring. Ohm out the thermistor: Consult the owner’s manual. Ensure there’s enough space: Make sure there are no airflow restrictions around the unit and in the vent terminal.
What causes an error code on a tankless water heater?
Most tankless water heaters are equipped with a diagnostic system that incorporate the microprocessor and LCD screen, which displays an error code if the problem occurs. An error code can appear due to many reasons, from a simple spider web and air/exhaust blockage to more serious gas or exhaust leak.
Issues surrounding the thermistor, such as wiring. Check the wiring: Ensure there’s no damage in the thermistor wiring. Ohm out the thermistor: Consult the owner’s manual. Ensure there’s enough space: Make sure there are no airflow restrictions around the unit and in the vent terminal.
Are there any problems with my tankless water heater?
No hot water is one of the most common tankless water heater problems. The first things you should check are the electric power, water, and gas supply to the water heater. Check the shut-off valves, as they might be in the closed position. Check the gas burner and does the flame rod generates the sparks.
What causes a code 73 on a Noritz tankless heater?
Improper circuit board settings will cause a code 73 error. Changing a jumper connection or dip switch while power is supplied to the heater can trigger the problem, as can an improperly programmed circuit board.
