Questions & Answers for: bosch error code 125

...bosch be prepaired to be put on hold a long.......long.... time. 1/ check overheat stat 2/ check fan esp the little flexie hose rear fan area for pinhole 3/check diaphrapm valve 4/ check micro switch ...

Bosch SX 250 tankless water heater will attempt to fire 3 times then EA code. I have spark through viewing window. Read troubleshooting manual. Says Check ionization electrode. There is no part in the

error codes re: fan speed fan very noisy Remove and replace combustion air fan in a Bosch GWH 2400 E NG water heater I was looking for a service manual, which you apparently do not supply. I was not ...

Bosch SX 250 Lp. I get EA code and will not start. Was very windy last night. Does anyone know how to correct this issue? EA & EC are telling you that the flame is not covering the flame sensor ...

...Bosch contact information, typical manuals, error codes, tech support, parts, fuel-saver calculator, service bulletins, water heater forum, fixya links, disclaimers, and links for finding service ...

...following links to narrow down cause for EA error ...

...error code I have a Bosch Aqua Star GWH 2400 ES NG with Error code C7. Ran through diagnostic, 5D = 00. What does this mean? C7 code has to do with your main fan. Either its not working due to it ...