York YHJF Heat Pump Overview Used between 2012 - 2016 (replaced by YHE) 14.5 SEER Heat Pump R410A Refrigerant Matched with either an X-13 or Variable Speed indoor blower Single-stage compressor on 2-4 Ton Two-Stage Scroll compressor on 5 Ton models Must have indoor expansion valve Uses...

New Heat Pumps Re: Expansion Valve Issue Many new heat pumps manufactured 2014 - 2015 have experienced sluggish or sticking expansion valves. The Issue has been traced back to an additive that Copeland was putting in their scroll compressors. This additive has caused expansion valves (indoor...

York Heat Pump: YHJF Re: Noisy/Rattling Panels Noisy, rattling, or vibrating panels is a common problem on the YHJF heat pump models. Solution: Remove the units top metal cover (fan guard, motor & fan blade still connected). Use foam tape to insulate the entire inside, outer edge of...

New Heat Pumps: YHJF Re: Outdoor Expansion Valve Bulb Rubbing Most YHJF heat pumps come from the factory with the expansion valve bulb line in contact with the copper suction line. Over time, the vibration from the compressor causes the bulb line to wear to the point of losing its...

York Heat Pump Re: Replacement Demand Defrost Control Board - S1-33101975102 INSTALLATION Power off unit totally - 240V & 24V Pull unit disconnect. Disconnect high voltage power to air handler Record positions and colors of original wiring. Remove old defrost control board....

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 Heat Pump Re: 331-01975-102 DEMAND DEFROST CONTROL Issue: Outdoor Unit Won't Come On The Demand-Defrost control has a selectable defrost curve. The original board is programmed at the factory with the correct defrost settings for the unit on which it is installed. The...

York Heat Pump: YHJF60 Re: Low Heat / Low Cool The 5 Ton model of the YHJF heat pump uses a 2-stage scroll compressor and a Yorkguard VI control module. It should also be matched with a Variable Speed air handler. Since the 5 Ton model is the only unit in this series that uses a 2-stage...

York Heat Pump: YHJF Re: Out of Freon Qty Possible Causes: 1 Broken O/D Expansion Valve Line Indoor Coil Leak Outdoor Coil Leak Lineset Leak CHECKOUT:

York Heat Pump: YHJF Re: Outdoor Fan Motor Running Very Slow With no call for Heat or Cool, the outdoor fan motor runs at a vert low speed. This is almost always caused by a shorted compressor on a unit with a single-pole contactor. Check each compressor terminal for a short-to-ground.