Heat Pump running excessively

Problems related to residential installations.

Heat Pump running excessively

Postby davisdee » Sun Jan 27, 2013 3:09 pm

I'm looking for some advice. I have a Trane Heat Pump (two stage heat and one stage cooling) with Air Handler Model TWE065E13 with (Control Board 21C148502P01). The system seem to be running excessively, running for hours at a time. The old programable thermostats seems to never change temp reading....so I though I may try replacing it to see if it makes a difference. The existing thermostat is a Honeywell Chronotherm IV Plus thermostat and I was going to replace it with a non-programble Honeywell RTH3100C, but the wiring diagram doesn't quite match. I actually have a second programable RTH6580WF on-hand in case the other non-programable one doesn't work out.

The current wiring configuration is as -

Thermostat Terminal "C" ( Blue wire) Terminates on "B" control board
Thermostat Terminal "R" (Red wire ) Terminates on "R" control board
Thermostat Terminal "W2" (White wire) Terminates on "W1" control board
Thermostat Terminal "E" (Black wire) Terminates on "W2" control board
Thermostat Terminal "W1" jumped to Thermostat Terminal "Y1"
Thermostat Terminal "Y1" (Yellow wire ) Terminates on "Y" control board
Thermostat Terminal "O B" (Orange wire) Terminates on "O" control board
Thermostat Terminal "G" (Green wire) Terminates on "G" control board
Unconnected Brown wire in Thermostat Terminates on "T" control board
Thermostat Terminal "X1" nothing connected
Thermostat Terminal "L" nothing connected
Thermostat Terminal "X2" nothing connected
Thermostat Terminal "QT" nothing connected
Thermostat Terminal "QT" nothing connected
Control Board Terminal "Y lo" nothing connected
Control Board Terminal "W3" nothing connected.

The new Honeywell RTH3100C has the following - E, AUX, Y, G, O, L, R, B, C. I guess that the Black wire goes to E, Yellow wire to Y, Green wire to G, Orange wire to O B, Red wire to R, but I'm not sure of the white, and blue wires.

Any help is appreciated.
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- Heat Pump running excessively

Postby Freon » Mon Jan 28, 2013 3:08 pm

See my reply in the General forum.
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