Air Conditioning - Transformer Circuit Board was Condensing Unit Contactor Voltage

Well for those of you who were following the Condensing Unit Contactor Voltage thread, thanks to you help, the voltage problem has now been traced down to the transformer and circuit board.

The red-yellow terminal screws now read 18v, but the red-green terminal screws read 26v. The circuit board has one chip, a few relays, and some resistors and capacitors.

Does this mean that the transformer itself is ok, but one of the components on the circuit board is bad? It is a Lennox whisper heat unit.

Thanks again.

Well for those of you who were following the Condensing Unit Contactor Voltage thread, thanks to you help, the voltage problem has now been traced down to the transformer and circuit board.

The red-yellow terminal screws now read 18v, but the red-green terminal screws read 26v. The circuit board has one chip, a few relays, and some resistors and capacitors.

Does this mean that the transformer itself is ok, but one of the components on the circuit board is bad? It is a Lennox whisper heat unit.

Thanks again.

The transformer is in the gas furnace ,when you pull off the bottom door ,at the top of the bottom door you should have a long box with a button on it your t-former is in there you got one heckovatite spot to wook in , with power on after removing the doors and box cover it will be the only somewhat square part in there with copper windings on it or a white square box with exposed 4 matbe 5 terminal connection one side should read +-120 volts other at least 24 to 30 volts but you probably have a problem (If a whisper Trane with the door at burners opening or a limit out or inducer motor starting up or you got a blockage at inducer vent or you are missing a few blades on inducer motor wheel which is not opening pressure switch.

ouch i got sore finger tips