I have an eEcobee3 I've been trying to get working with my HVAC. The HVAC is a heat pump, with the air handler in the attic. The current thermostat is a RiteTemp 6025. It's currently wired up at the thermostat the way the RiteTemp instructions say (the C wire is present and hooked up), except that the W wire from the air handler is connected to the W2 terminal on the thermostat, and the Y wire is interrupted by a float switch for the drip pan. The RiteTemp operates as expected: cool air when the temperature goes above the threshold, warm air when the temperature drops below the threshold.
This is how Ecobee says it should be hooked up with AUX heat.
This is how the RiteTemp is actually hooked up.
This is how the wires are hooked up at the air handler (the fat yellow wires connect to the skinny yellow wires from the bundles and go to the float switch):
(I understand the Y wire triggers the condenser, so presumably the float interrupts the yellow connection to kill the HVAC if the pan drain gets clogged and overflows.)
However, when I hook up the Ecobee following the Ecobee instructions, I get hot air when I should be getting cool. I'm wondering if the fact that the W wire is connected to W1 at the air handler and W2 at the thermostat is messing things up. But the RiteTemp works as it should, so…? Is there a reason the white wire would run from W1 at the air handler to W2 at the thermostat?
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