Carrier Heating & Cooling - Page 8 - Recent Questions, Troubleshooting & Support

if the correct voltage is applied then I would check relay, may be bad. use insulated tool and push the contactor down and see if unit runs.

Check wires from stat to furnace for burnt wires.

Hi Cherisse - This is a typical error code for a faulty thermister (also shows up as open contactor). On some Carrier units, it also refers to DC Fan protection... This does not sound like a user fixable item...please contact an HVAC repair shop.

Do you have power to unit?

This problem is outdoor unit issue. Blinking 4 times in carrier highwall unit means Compressor drive malfunction. Possible cause are the following:- Stuck up or grounded compressor.- Magnetic contractor in outdoor unit is defective or indoor unit relay supplying outdoor unit is defective.- No power supply going to outdoor unit

Pully clutch cud bbad

Here is link to codes. It has something to do with your compressor. https://toshiba-aircon.com.au/techdocs/uploads/files/TSV%20cassette-1434520870.pdf

I'm confused but 79 for Trane/ American Standard is low pressure

It likely happened from a power surge. Need to enable zoning or turn it back on from tstat.

I am not sure but here is the installation manual that might help https://aplusair.ca/wp-content/uploads/Carrier-Thermostat-Infinity-Control-Model-SYSTXCCUID01-V-Installation-Instructions.pdf

http://carrier.optim.ua/upload/iblock/bab/42QCP-Remote-control-OM.pdf

Sure. Remove the start cap, temporarily if you choose to replace, and see if code clears. Unit should still run without the start cap.

E1 normally means communication issue, check all wiring connection to make sure they are correctly match

cant give answer with that information look for the manufacturer plate will have model and year manufactured

36000 btu/ 3 ton