Protherm Jaguar Condens Boiler Keeps Throwing F4 Error After Repeated Repairs
We've been using our Protherm Jaguar Condens boiler for about two years, and the unit has been giving an F4 error since ...the very first day. At first, we were able to temporarily bypass the issue by pressing the reset button, but over time this error became persistent. During this period, Protherm te