TFL-07 In case of errors…

Faults in the thermocouple prevent using the operating mode “Temperature”. Following automatic actions to this error are possible:
  1. Disabling channel.
  2. Follow another channel using the value “follow factor” (as set in the submenu control).
  3. Manual output level mode with the last setpoint.
  4. Manual output level mode with a fixed value (as set in the submenu control).

Factory setting Off · from #3 Master