York Heat Pumps Re: 2-STAGE SCROLL COMPRESSORS Many newer units are using a 2-stage scroll compressor. These compressors have the standard "C-S-R" power terminals on the front, but also have an extra 2-wire plug connection in the back. This additional connection is for a 24 VAC "unloading...

York Air Conditioner: CZF / CZH Re: FAULT CODE DISPLAY The control will display any fault code that is currently active using the LED's. The control will display the fault code, pause two seconds, and display the fault again. The control will continue the fault code display until the condition...

York Air Conditioner: CZH Re: High Pressure Lockout / Condenser Fan not Working The CZH air conditioner utilizes a two-stage scroll compressor and a variable-speed condenser fan motor. If the condenser fan motor fails to operate, the unit will lock-out on High Pressure. Qty ...