How to solve the problem when the thermostat LCD displays Er1?

views: 1561 　time: 2021-08-21

The 3A thermostat can change the built-in temperature measurement method through advanced settings, and the 16A thermostat needs to check the whether external sensor is loosely connected or the sensor is damaged and needs to be replaced.

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Heating and cooling system
Energy efficiency house
Ventilation system
Water purification
Smart home system
Central vacuum system
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