What does an error code on a Bosch water heater mean?

Get FREE Estimates! Error codes are the indicators of the problems inside the water heater. When the error code appears on the Bosch heater’s LCD display, the reset button sometimes leads to an error removal, but if it doesn’t work, the instructions below might help troubleshoot the problem:

How can I troubleshoot my Bosch tankless water heater?

If the tankless water heater develops a problem, troubleshoot it before calling for service. Disconnect the power supply to the water heater before removing the cover. Inspect the water supply. Connect the supply line to the blue inlet on the water heater.

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:

Is there a problem with my tankless water heater?

Like other devices, the tankless water heater also has problems. Some of these issues are ignition failure and flame loss. 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.

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.

Why is my tankless water heater not working?

Some brands of tankless water heaters are set in a way that if there are three failed attempts to ignite the burner, the error code will appear showing the ignition failure problem. Here are the reasons, symptoms, and solutions for the ignition problem: The hi-limit switch has tripped. Turn the unit off. Try to reset it.

Which is the best Bosch tankless water heater?

Bosch offers several models of tankless water heaters, including the Bosch Therm 830 ES Non-Condensing tankless water heater with 8.3 gallons per minute capacity at 35 degrees Fahrenheit and the Bosch Therm C 1210 ES Condensing tankless water heater with more than 12 gallons per minute capacity.

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.

What do I need to know about my Bosch water heater?

The primary fan spins slowly when the water heater is working. Check the wiring connection on the fan and control board. The voltage must be 120 VAC and the element correctly grounded. Does the venting system meet the code and manufacturer requirements?

What does an error code A7 mean on a Bosch tank?

Error code A7 – Outlet temperature sensor fault. The outlet temperature sensor reacts when the temperature is either below 36 F when the unit is protected from freezing temperatures, or above 210 F in a case of overheating due to the lime-scale deposits. Check the sensor and wiring.

What does it mean when your Bosch dishwasher says E09?

Bosch Dishwasher Error Code E09. If your control panel is displaying Bosch Dishwasher Error Code E09, then we advise you to fix it immediately as ignoring it can cause even more problems. The E09 means that the temperature of the water isn’t getting high enough. It can be due to a faulty control panel relay or heating element.

Why is there an error code on my Bosch dishwasher?

Bosch Dishwasher Error Code E09 If your control panel is displaying Bosch Dishwasher Error Code E09, then we advise you to fix it immediately as ignoring it can cause even more problems. The E09 means that the temperature of the water isn’t getting high enough. It can be due to a faulty control panel relay or heating element.

What is the error code on my Bosch tankless?

Error code A7 – Outlet temperature sensor fault The outlet temperature sensor reacts when the temperature is either below 36 F when the unit is protected from freezing temperatures, or above 210 F in a case of overheating due to the lime-scale deposits. Check the sensor and wiring. You might have to flush the unit to remove the mineral build-up.

Why does my Bosch water heater not make sparks?

The ionization electrodes are not making sparks when water is flowing. There are many reasons for this problem and here are some; low gas pressure, the fan speed is low, wire connections are loose, the air in the gas line, no gas. Ionization electrode failure during water heating.

How to troubleshoot a Bosch tankless water heater?

Check the wire connections on the gas valve and control board. Measure the voltage on the wires when a water heater is ON… it should be 24 VDC. If the measurement is as specified, the gas valve is malfunctioning. And what do you think about Bosch? Click below to see contributions from other visitors to this page… Had a Bosch heater for 15 years.

Why does my Bosch hot water heater not heat up fast?

You get that problem with any tankless hot water heater, and it is worse if you turn off the water to conserve it, getting more cold water bursts as a result. Bosch hot water heaters do not heat the water up that fast unless you put it on the winter settings. That turns on three of the burners instead of one.

Why is my Bosch tankless water heater not working?

The problem is with the gas valve circuit. Check the wire connections on the gas valve and control board. Measure the voltage on the wires when a water heater is ON… it should be 24 VDC. If the measurement is as specified, the gas valve is malfunctioning.

What does temperature sensor mean on Bosch tankless?

The outlet temperature sensor reacts when the temperature is either below 36 F when the unit is protected from freezing temperatures, or above 210 F in a case of overheating due to the lime-scale deposits. Check the sensor and wiring. You might have to flush the unit to remove the mineral build-up.