Error Code Err IN is the CV thermostat controller not finding the thermocouple.
It is a bad thermocouple connection or the thermocouple wires are on the wrong terminals.
Thermocouple wires are wired as follows:
Yellow TC+
Red TC-
Error Code Err IN is the CV thermostat controller not finding the thermocouple.
It is a bad thermocouple connection or the thermocouple wires are on the wrong terminals.
Thermocouple wires are wired as follows:
Yellow TC+
Red TC-