What does error code EA mean on Bosch water heater?

Bosch error code EA indicates no flame has been detected inside the water heater. To troubleshoot the problem, you can try the following steps: If error code EA remains, you will need to contact a qualified plumber to find and fix the underlying issue.

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.

What should the voltage be on 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. Find help to install or repair your Bosch tankless!

What should resistance be for Bosch tankless heat exchanger?

It is important to check for any gas leakage close to the gas combustion chamber and heat exchanger. Check if the limiter is operating and wiring is correctly linked to the control board and limiter. The element is located at the top-right corner of the unit. Measure the resistance on the wire harness; it must be between 115 and 120 ohms.

Bosch error code EA indicates no flame has been detected inside the water heater. To troubleshoot the problem, you can try the following steps: If error code EA remains, you will need to contact a qualified plumber to find and fix the underlying issue.

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.

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. Find help to install or repair your Bosch tankless!

What does the Bosch error code A2 mean?

Bosch error code A2 indicates a fault in the flue gas limiter. To fix Bosch error code A2 check the continuity of the flue gas limiter and fix any problems. Ensure there is no flue gas leakage around the heat exchanger’s seals. Ensure the connections of the gas limiter and all wiring harnesses are secure.