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 does error code E2 on Bosch water heater mean?
Bosch error code E2 means there is a problem with the cold water temperature sensor. Bosch error code E2 can show up if the water temperature goes below 36°F. The cold water temperature sensor or the water valve may need to be replaced.
What does CA mean on a Bosch water heater?
Contact a trained technician if necessary. Bosch error code CA indicates that the water flow is over 10 GPM. If your Bosch displays error code CA, unplug the unit from the power supply and inspect the water valve’s wiring and the PCB. Ensure the water pressure flow is below 10 GPM, and the water pressure is below 150 PSI.
What does E9 mean on a Bosch overheat sensor?
Bosch error code E9 indicates that the overheat sensor (ECO) has an open circuit. If your Bosch unit displays error code E9, unplug it from the power outlet. Ensure the wiring of the overheat sensor is in good condition, tight, and clean. Ensure the venting is within specification and not blocked.
Is there an error code on my Bosch water heater?
Bosch is a well-known brand of tankless water heaters that are commonly used by many homeowners. If there is a fault with your Bosch tankless water heater, a certain error code will be displayed on the unit’s display. This error code gives owners a window into what is going on inside the unit.
What does an EO code mean on a Bosch climate heater?
An EO error indicates an electronic error caused by either a control board problem or a problem with supply voltage to the heater. A single EO code is not cause for concern, but for repeated EO codes follow the following procedure. Tools needed: • Voltmeter • Phillips head screwdriver Procedure 1.
How to troubleshoot a Bosch E9 error code?
E9 Error Code Troubleshooting Models:C1210ESC, C1210ES, C1050ES, C950ES, 940ES, 940ESO, 830ES Introduction The following procedures are for gathering information to assist Bosch Tech Support in determining the cause and solution to the problem. Unplug power cord and remove outer and inner covers from heater (refer to Installation Manual).
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.
