ERROR MESSAGE ER1
Forte: The thermocouple circuit is broken.
Moderna, Fuga, Delta, Kivi, Cilindro: The measuring circuit of the temperature sensor is broken. Contact service.
ERROR MESSAGE ER2
Moderna, Fuga, Delta, Kivi, Cilindro: Short-circuit in the measuring circuit of the temperature sensor. Contact service.
ERROR MESSAGE ER3
Forte: The measuring circuit of the overheat protector is broken.
ERROR MESSAGE ER4
Forte: Disrupted connection between the lower and upper card.
ERROR MESSAGE ER5
Forte: The temperature surrounding the control panel is too high.