The device displays error messages in case of malfunctions or faults:
Solid-state relays are used for heater control to ensure longevity and precise power modulation. 3. Operating Procedures TEMPRO MOld TEMPERaTuRE COnTROllERs Wittmann Tempro Plus D 360 Manual
“The error code is E-12,” Derek read from the manual PDF on his phone. “Says ‘Heater contactor failure.’” The device displays error messages in case of
Before turning on the heater, you must vent air. you must vent air.