My Trane air handler will not turn off after the safe-t-switch was replaced

[NickNeedsHelp]

My AC quit on friday afternoon. Couldn't get it to turn on at all, not even the fan. I called a tech and he came out the next day and after checking the electrical for a while inside the air handler, he figured out that my safe-t-switch (float switch I think he called it) had failed and was permenantly tripped, meaning it was telling the air handler that the drain was flooded all the time and preventing it from coming on.

He replaced that part and it fired right up. the next day I realize that the fan will not shut off now. With the A/C system off and the fan in Auto mode, it's still running. It's been running for 2 days straight now. The compressor still works via the thermostat, once the temp gets high enough (or i lower the setting) the compressor kicks on and the air is cold.

Additionally, I checked the switch and actually tripped it myself (pulled it out and turned it upside down) and it shut the handler off. So the safe-t-switch is the ONLY thing now that turns the air handler off. The wires are marked, so i don't think he spliced it in backwards, but I'm no HVAC tech, I'm a computer guy.

I've called and left a message (this happened over the weekend). I could always turn it off at the thermostat before, this is going to kill my electric bill if it keeps up much longer. Can anyone let me know what could have been done incorrectly or what else needs to be done?

[SoFlaDave]

Sounds like he crossed his terminals. Call him back out there to fix his goof. Crap happens

[Mr Bill]

Additionally, I checked the switch and actually tripped it myself (pulled it out and turned it upside down) and it shut the handler off. So the safe-t-switch is the ONLY thing now that turns the air handler off. The wires are marked, so i don't think he spliced it in backwards, but I'm no HVAC tech, I'm a computer guy.

Be hard to wire a float switch in backwards, you have another issue, get him back out, it might not even be related to the first call, something else could have went south.

[JEG8233]

The tech needs to come back out and start checking for other issues I would imagine. Good luck on it.

[lentz]

Sounds like you have more troubles that a bad float switch. In a lot of cases the float switch only turns of the condenser.

[nismo1]

Probly just forgot to take his jumper off. Could be other problem don't know I'm not there. Breakin the red takes the tech to the a/h where the problem is. Breakin the y takes him otside where the problem isn't