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judy61Aug 11, 2025
What to do if the Dimplex HTC521W Thermostat LCD screen is blank?
- RRobert PattersonAug 11, 2025
If the Dimplex Thermostat LCD screen is blank, ensure the thermostat is fully installed and that the power supply has been reconnected at the circuit breaker or fuse. Also, if the heater or heating appliance has its own power switch, make sure it is in the ON position.