The temperature control’s mercury bulb should be level to function properly.
Cleaning and maintaining your temperature control is essential, but if you do not do this, your temperature control will likely develop mechanical and electrical problems, including aging base wires. It would be best if you tighten all loose connections with a screwdriver, then lightly brush away any corrosion using a toothbrush or a cotton swab. It could also fail if you place it in direct sunlight. This temperature control will register the temperature from the sunlight instead of reading the room’s temperature leading to incorrect room temperature, then avoid this by placing the temperature control away from the sunlight. A temperature control may also fail if the wires trip. A tripped wire causes interruption to the power supply and should be relinked for a temperature control to resume functioning, then check your power supply for an engaged circuit breaker or a faulty fuse. These multiple components can also interrupt your temperature control’s power supply. Inspect your temperature control for dirt or dust, as they can also cause your temperature control to fail. A dirty temperature control causes erratic operation and idea failures. Clean the temperature control’s interior components to service this problem. Inspect the HVAC equipment’s batteries to ensure they have enough energy to power your temperature control. If they are okay, check your temperature control’s temperature settings and ensure it is adjusted properly for the season. You should replace your battery if the screen is blank, then for older temperature controls, check their level. The temperature control’s mercury bulb should be level to function properly. Finally, inspect your temperature control as a whole to ensure it was properly installed, and often, faulty temperature control installation causes destruction and electrical problems to your home. It also prevents your HVAC idea from now working as it should. Get an HVAC professional to service this problem. If you decide to correct it, use an HVAC owners manual.