Problems with AC after changing thermostats

Old 06-17-18, 01:30 PM
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Problems with AC after changing thermostats

Our home has 2 HVAC units recently it we made the decision to upgrade to new ecobee thermostats. We did not have a c wire so we followed the PEC installation instructions. Our downstairs thermostat works great with new install however our upstairs one stopped working after about 30 minutes. We first ruled out a problem with the thermostat it works so thatís not the problem. I thought maybe it was the wiring so I rewired to change the HVAC wiring from a 4 wire to a 5 wire but still no luck. It is a Payne unit and I cannot see any fuses at the disconnect. Any advice would be appreciated.
Old 06-17-18, 06:49 PM
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Did you check inside of the indoor unit for a low voltage blade type automotive fuse?
3 amp for gas heat or 5 amp for heat pump or electric heat.

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