E0 = The internal sensor has developed a fault. The thermostat will need to be returned to Heatmiser for servicing.
E1 =
- The remote FLOOR sensor has not been connected.
- The remote FLOOR sensor has not been wired correctly.
- The remote FLOOR probe is faulty.
E2 =
- The remote AIR probe has not been wired correctly.
- The remote AIR probe is faulty.