I installed the RTH230B thermostat and the heat works fine but the AC will no come on? Anyone have a clue what I have done wrong?

Follow the instructions and recheck all wiring and settings.


http://customer.honeywell.com/techli...0s/69-1800.pdf

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Originally Posted by hvac1000

Follow the instructions and recheck all wiring and settings.


http://customer.honeywell.com/techli...0s/69-1800.pdf

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I did that and spent 45 minutes with tech support, they say to have the compressor checked?

Then I guess you better have the compressor (outside unit ) checked.

Make sure you did not blow a outside fuse when you were messing around installing the thermostat. Check breaker inside and fuse outside for the A/C unit.