Problem Cluster

Thermostat Problems

Very high homeowner search volume. Thermostat not working, not responding, blank display, wrong temperature.

Symptoms in This Cluster

Thermostat Display blank

No power or information showing on your wall-mounted HVAC control panel.

Full Diagnostic Guide →

Condition Variations

Thermostat Display Blank After Power Outage Thermostat Display Blank Intermittent

AC Running Constantly

The system never shuts off, even after the desired temperature is reached.

Full Diagnostic Guide →

Condition Variations

AC Running Constantly in Extreme Heat AC Running Constantly After Filter Change AC Running Constantly Upstairs Only

Furnace Not Heating

The furnace fan is blowing, but the air is not warm or it won't stay lit.

Full Diagnostic Guide →

Condition Variations

Furnace No Heat – Fan Blowing Furnace Not Starting at All Furnace Clicks but No Ignition

AC System Won't Turn On

The entire HVAC system is unresponsive when you try to start it.

Full Diagnostic Guide →

Condition Variations

AC Has No Power at All Outdoor Unit Not Starting AC Not Turning On After Winter

Heat Pump Not Switching Modes

Your heat pump is stuck in cooling mode during winter or heating mode during summer.

Full Diagnostic Guide →

Condition Variations

Heat Pump Not Switching After Power Outage Heat Pump Not Switching in Extreme Heat Heat Pump Not Switching Intermittent

← Back to thermostats controls