!!
critical Dixell
Error Code P1
Room probe failure — thermostat malfunction or disconnected.
? What Causes This
Faulty room temperature probe or loose wiring connections.
✓ How to Fix It
Check and replace thermostat probe if faulty. Tighten any loose electrical connections.
Source: page 2 of the official manual
From the manual
This error code appears in:
Dixell XR06CX Temperature Controller