I have a Carrier model 42KPC019303. It turns off while running. The LED blinks five times, stops, and then blinks 5 times again in cycles. After a few minutes, it turns back on again and off again after a while. Normally if i set it at a temp of 26C it doesnt turn off. Sometimes it does. But normally any temp below 26C it shuts off, blinks 5 times. Stops. Blinks 5 times and repeats.

What I realised is that the coil temp sensor is located at the buttom of the evap coil. At that position it does sense the change it temp. I had checked another carrier (not the same model) and the coil sensor was located higher up. So I removed it and tied it up higher up on the coil. This is after I had swapped cicuit board, and all sensors. The higher up position allows it to sense a change in temp on the coil. What I realised is that the coil temp sensor is located at the buttom of the evap coil. At that position it does sense the change it temp. I had checked another carrier (not the same model) and the coil sensor was located higher up. So I removed it and tied it up higher up on the coil. This is after I had swapped cicuit board, and all sensors. The higher up position allows it to sense a change in temp on the coil.