| F.13 | Main PCB (control board) fault of the unit. | The manual and technical sources define it as a fault of the main control board, the most likely cause of this code in Thema Condens. Check by tightening the connectors on the board and, if it persists after ruling out the sensor/relay, replace the board. Note: several sources warn that F.13 can also originate from the NTC sensor or relay, so it is advisable to rule out these components before changing the board. |
| F.63 | EEPROM memory fault of the electronics (PCB). | It is an internal fault of the PCB itself (defective EEPROM memory), which directly points to this part. Verify: if the fault code persists after a reset, the PCB is damaged and requires replacement. |
| F.70 | Invalid product code (DSN: Device Specific Number). | It typically appears after replacing the PCB (and/or the display) without readjusting the appliance code, or due to incorrect/missing power resistance coding. It is the code directly linked to the spare part of THIS piece: verify by re-entering the correct DSN of the appliance after installing the new board. |
| F.65 | Temperature of the electronics too high. | The control electronics (PCB) overheats due to external effects or an internal fault of the PCB itself. First, check ventilation/ambient temperature and dissipation; if the environment is normal, the fault is with the PCB. |
| F.64 | Fault in the electronics / NTC sensor (analog-to-digital conversion). | Short circuit in the flow or return NTC sensor, or defect in the control board. Check/measure the NTC sensors first; if they are correct, the fault is in the PCB. |
