The Appliance Repair

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Troubleshooting Problems with a Low-Voltage Thermostat

When an HVAC is not working properly as it should then there might be a problem with your thermostat. You have to troubleshoot it quickly because they are easier to fix. Three HVAC symptoms can often be traced to problems with the thermostat: sometimes they produce no heat and the furnace does not set the temperature to the desired level it is either too cold or too warm. The system cycles (turns on and off) too frequently

If the HVAC system fails to make cooling or heating there would be several thermostat problems that you should consider before assuming the furnace or AC unit is to blame. In most of the cases, this symptom is the result of no electrical current reaching the thermostat. The problem causes of this problem can be Circuit breaker tripped or fuse is blown and the thermostat might be dirty. There might be an open connection in the thermostat and A bad battery on digital electronic thermostats.

Possible repairs, first of all, you have to reset the circuit breaker or replace burned out fuse. After that remove cover by gently cleaning the components especially from the coil and switch contact surface. Set the thermostat on its lowest setting by cleaning the bimetallic coil with a soft brush and compressed air. Set the thermostat to its highest setting and clean the coil again. Then, reset the thermostat to its desired setting.

Tighten any loose screw terminals. If a wire is loose from its terminal, place the wire back on the terminal clamp and tighten the screw. Check for loose connections or disconnected wires on a low-voltage transformer, which is usually mounted on the furnace. On electronic thermostat models, You have to check if the display is working, indicating power. If it is not working, replace the batteries in the thermostat. After doing all these steps if nothing happens. You have to take Appliance repair service for sorting this problem as soon as possible