What to Do If SwitchBot Smart Radiator Thermostat Body Displays "Er" and Is Not Functioning?

• Related Product: SwitchBot Smart Radiator Thermostat

1. The working temperature of the Smart Radiator Thermosta valve is 0~50℃ (32-122℉). When your device is in an environment below zero degrees for a long time, it will display an "er" error to remind you. Please place the device in an environment above zero degrees for a few minutes to restore normal temperature display.

2. If the issue persists, please contact us via Feedback in SwitchBot App. When contacting us, please provide with the following information:

• A photo of the device display screen code