What does E1 mean on a tankless water heater?
The E1 fault code tells you that the water heater tried to ignite twice but did not ignite. An E1 fault code is not always caused by a failure of the gas valve to open. Additional diagnosis needs to be performed since this fault code may be caused by a number of issues.
How do you fix an E1 error on a heater?
UNPLUG THE UNIT and make sure the heater is placed in an upright position. If the unit has a thermostat, it may be set too low. Make sure the electrical outlet or circuit breaker is working. Check for obstructions.
What is the fault code on a Bosch tankless water heater?
Definitions of Bosch Tankless Water Heater Error Codes Bosh fault code 11 – Indicates a problem with the tankless water heater’s ignition. Bosch fault code 29 – Indicates a possible clog in the unit’s neutralizer. Bosch fault code 90 – Indicates low gas supply pressure.
What to do if your Bosch water heater has an error code A3?
If your Bosch tankless water heater displays an error code A3, ensure the exhaust temperature sensor is installed correctly and the connection is tight and secure. If necessary, check and replace the exhaust temperature sensor. Additional information on how to measure your particular unit’s sensor can be found in your unit’s troubleshooting manual.
What does an error code 11 mean on a tankless water heater?
When there is a malfunction, an error code will appear on the LCD display. 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.
What to do if your Bosch tankless is not working?
Reduce the maximum power and water temperature. The backflow temperature sensor reacts when the temperature is over 309 F. Check the vent pipes if they meet the code and requirements, look for damages and obstructions. Check the wire connections on the sensor and control board. Ensure the venting system is per codes and instructions.
Definitions of Bosch Tankless Water Heater Error Codes Bosh fault code 11 – Indicates a problem with the tankless water heater’s ignition. Bosch fault code 29 – Indicates a possible clog in the unit’s neutralizer. Bosch fault code 90 – Indicates low gas supply pressure.
If your Bosch tankless water heater displays an error code A3, ensure the exhaust temperature sensor is installed correctly and the connection is tight and secure. If necessary, check and replace the exhaust temperature sensor. Additional information on how to measure your particular unit’s sensor can be found in your unit’s troubleshooting manual.
Reduce the maximum power and water temperature. The backflow temperature sensor reacts when the temperature is over 309 F. Check the vent pipes if they meet the code and requirements, look for damages and obstructions. Check the wire connections on the sensor and control board. Ensure the venting system is per codes and instructions.
When there is a malfunction, an error code will appear on the LCD display. 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.
