DUALUDG-4999 Thermostat

Error Message – E2

Check to make sure that the floor sensor has been connected correctly. See the installation manual for instructions. If these situations do not apply then the external sensor is defective or short-circuited. Check the external sensor. Check the resistance reading of the sensor wire. We suggest having the electrician who installed the product perform this reading. Once you have obtained this information, call Warmup to confirm the diagnosis.