Gas and Oil Home Heating Furnaces - A/C Troubleshooting
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Painless
12-08-02, 12:47 PM
I have a Trane TRO36C100AO that I went to put a digital thermostat onto. This didn't work and I contacted Honeywell and they told me I had the wrong one. I decided to go ahead and put the mechanical one back in, but it will still not work. I have power to the outdoor unit, and also have power to the indoor unit, but cannot get ANY thermostat to work. I have checked the BUSS inside the air handler and it apears to be good. What else should I be checking? I do have power to the thermostat and the wiring is correct per the instalation instructions however it will still not work. Idea's on where to go next?
fjrachel
12-08-02, 01:06 PM
Re-check your wiring at the thermostat. You may have broken a wire or miswired. You may have blown the control transformer or it's fuse. Check for 24v at thermostat.
Painless
12-08-02, 05:15 PM
So what would be the best way to test out the transformer? I have checked the Buss fuse and it apears to be in good order. Thanks!
hvac4u
12-08-02, 06:46 PM
determine if proper high voltage is present. then if so, check to see if 24 volts is coming out. if not transformer is bad. there may be a blade fuse on a circuit board.