Hi. I have a problem with my hob gaggenau cx 480 ; it's showing error code C8 after I installed two PC boards that I recently purchased. Previously, there were error codes Ci9 ABD R and E6 MB R. Additionally, there were clicking sounds that stopped after I installed the new parts(PC Electronic Board Module 00749202,PCB Module Relay-00749203) but now, error code C8 has appeared. Does anyone have any idea what might be wrong? Regards. Kris