My home a/c unit won't stop running.

Probably need a new thermostat.

Shoot it in the kneecap.

That'll teach it.

Is it on "auto" or "run"?

Take off the thermostat till you can see the exposed wires.

the Red wire is 28v
the Green wire is Indoor fan
the Yellow wire is Compressor
the White wire is Heat
the Orange wire is the SOV (switch over valve) for heat pumps
the Black wire is Emergency or Secondary Heat " " "

Jumper what you want to happen to the Red wire. e.g.

Red to Green and Yellow for normal air-conditioner to run.



I am no AC tech.. I got this off the internet and used the same process to check mine when my AC was running wierd.

It's most likely a bad contactor, and this needs to be replaced immediately. Your bill is going to go through the roof and eventually it will ruin the compressor and fan motor as well.

flip the breaker

quote:

---

quote:

---

not even running outside but inside it is steady pumping cold air.

---

Impossible

---

I missed that but it is possible. What likely has happened is his evaporator coils have frozen, possibly due to a leak. The fan on the air handler portion often works based on the temp of the air exiting the air handler. If the coils are frozen, the fan will continue to blow until the coils thaw and the temperature exiting the air handler drops.

ETA: Actually, though, depending on when he checked the outside unit vs when the fan was running it may still be a stuck contactor/ control circuit problem. If he turned the outside unit off, the inside unit could still be running depending on the type of system (if the heating system is a furnace, for instance). Then the fan would blow for a few minutes, likely.

curious as to how the compressor and condenser are not running, but you still have cold air inside?

quote:

---

Better catch it..

---

You might want to contact River City Air to get that A/C fixed. Don't forget to use the Moscona special.