As I was cutting weeds away from my outdoor ac unit, I accidentaly cut through a small wire that has a red and white inside of it, we wired them back together and still have no ac or heat or air, we just replaced the thermostate also what should I do now ? we checked the breakers in the heater and on the main electric all brakers are on. I know this wire goes from the ac to the heater to the thermostat what elsa should I try, intertherm electric heater and ac thanks so much
Heating & Cooling - Intertherm - P3RA-048K Air Conditioner
Answers & Comments
This wire is powered by a small transformer, and delivers low voltage to energize the colenoid that turns on the ac unit. Turn the ac on from the inside. Then check if it is getting the voltage. Usually 24V AC. If not getting the voltage, go to the attic where the evaporator assemble is and locate that small transformer. It may have shorted out. You don't have to get an exactly the same one, but get one with same rating. They are rated with input voltage, output voltage, and ampere. They are usually 800mA. The input is usually 120 volts ac and output is 24 volts ac. It should say it on the transformer itself.
That wire is supply 24 volts. See if you can find a smal transformer. That is what needs to be replaced. The transformer is burnt out, They are available at AC parts supply, and only cost about 10- 30 bucks.
First try turning off the power to the furace for 15 sec and tunr it back on (reset the computer) you may have blown a control fuse on the contol board inside the furnace, turn off power and becareful of hazardous voltage conditions