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“ER1 Out” Thermostat Reading on the Display

1 min read · Updated May 2022
3iE Energy-Monitoring Thermostat

ER1 Out

The ER1 Out reading means that the thermostat is not set up correctly. Certainly, this is a simple fix.

Fix the Issue

Go to Menu > Settings > Advance settings > Probes > External > Select “No Function”.

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