There are numerous reasons why a thermostat can stop functioning properly. It could be that the batteries need to be changed, a breaker that powers it is flipped or broken, the wiring inside is burnt out or frayed or that external factors like blocked air filters or leaky ductwork is causing it to malfunction. If you haven’t diagnosed the problem yet, turn to Experts who can give you the right solution.
Listed below are a few questions answered by electricians on Thermostat related problems.
There are two parts to a thermostat called a face and a sub-base. Gently pull the face and release the base from the sub-base. Then locate the face latch at the bottom of the thermostat where there is a small indentation. When you slowly pull the face towards you after pushing the latch, you will see two AA size batteries. Quickly change them as you only get a minute to do this to keep the memory intact.
If your thermostat is 120V, connect the black wire to the line side of the T-stat and the white wire to the white from the unit.
This should be possible but using a 2 pole Thermostat will probably give you better results.
You should be able to connect them by following the usual wiring system:
Red to R with jumper to RC for POWER, White to W for HEAT, Green to G for FAN and Yellow to Y for COOL. In your case the Blue might be a Y.
The simplest way to go about this is to start by making a hole in the wall that the thermostat will be installed on. Ensure that the hole isn’t larger that the thermostat but is big enough to snake out the fish tape. Then find the extension of this wall in the basement and create a hole in it from the basement up. Ensure that the hole is made on the wall and not outside of it through the floor. If you have other outlets on the same wall that have wires running through it from the basement, use them as a reference for the job. After you create the hole in the basement, insert the fishing tape into it. Finally, push the tape through and pull it out of the hole in the wall upstairs.
First, check continuity by using a meter. If you get a reading when the thermostat is turned above temperature, it means that it is working.
One of the reasons why a thermostat could give you problems is because of faulty wiring. To check this, use a multimeter and examine the thermostat’s transformer. Look for continuity of wiring that extends from the transformer and adjust the multimeter to measure for infinite resistance. Next, bring the probes into contact with the exposed wiring joints or solders. If you get a reading that says that there is resistance at infinity, the problem could lie with faulty circuitry inside the thermostat. Closely examine the wiring by removing the thermostat completely, check for any burnt or frayed components and replace them. If you need further help or have your own question about thermostat problems, ask an expert.
I went out into the garage this morning and there was an electrical burning smell. It was coming from the water heater. I shut off the breaker and opened the top and bottom panels on the front of the heater. The top panel is fine, but the bottom panel wasn't. The insulation has a burned area and the plastic overlay that covers the wiring was melting. I removed the overlay and found that the black wire insulation is gone and that is what was causing it. This water heater is very old, early 1990's. It works fine though. Can I remove the black wire and replace it? I have some 10 gauge Romex and I can snip a piece of the black wire from that to use. Do you know what caused this? Will it happen again or is it just an old wire that lost its insulation? I have pictures, if that helps.