[lostnspace]

Okay I don't have the funds to call a repair man so here I am. I've got a coleman central air unit that has had a lot of upgrades (new circuit board latest). I turned the air on and it was blowing room temp air. I went outside to see if the fan was working and it wasn't. So I tried turning the thermostat up above room temp. then I went outside took off the access panel and watched while I had wife turn the temp. down. Inside blower works fine but not a damn thing on the unit itself no hum nothing. I am very reluctant to press in on the contactor with a screwdriver so I didn't. Any other suggestions to help would be greatly appreciated.(Detailed please)

[dac122]

First check to see if you have power to the unit on that circuit, and if the control wires are okay.

[lostnspace]

Okay so how do I go about testing it specifically.

[dac122]

For power, check for 220VAC power at the box and also at your contactor.

For control wires, if you have a control board check for 24VAC to the board. For a simple A/C system with 2 wires, simply check continuity on the two wires.