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Thermostat Reads Error Message “ER2” on the Display?

The Thermostat Reads ER2

When the thermostat reads “ER2,” the floor sensor has a short circuit or has a loose connection. Your electrician must secure connections and test the probe using a multimeter set to the lowest possible ohms scale. The resistance reading should be between 7 and 17 ohms.  If a short is found and a backup sensor probe was not installed, you can bypass the error message by setting the thermostat to read the air temperature instead.

Menu > Settings > Set Heating Target > Target Air Temperature


Is your thermostat reading “ER1”? Read our Warmupedia post here.



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