Knowledgebase
Heating
YHJD/YHJF - Contactor Won't Energize
Heat Pump: YHJD / YHJF Re: Contactor Won't Energize The defrost board does not energize the contactor on the outdoor unit. No Compressor Operation No Outdoor Fan Operation ► This condition is often mis-diagnosed as a Bad Defrost Board when the board is actually in a Lockout. ► There...
12 Apr, 2021 Comments: 0
YHJF - Heating: High Electric Bill
York Heat Pumps: YHJF Re: Heating - High Electric Bill When the customers reports an electric bill that is much higher than normal, that typically means that the auxiliary heaters are operating more than normal. ► The blower and auxiliary heaters are typically working normally or the...
12 Apr, 2021 Comments: 0
Low Suction Pressure (Heating)
York Heat Pump: YHJF Re: Low Suction Pressure in Heating Mode Qty Possible Causes: 1 Low Refrigerant Charge 6 Bad Outdoor Expansion Valve Defrost Problem Bad Cod Fan Motor CHECKOUT: 1. Check Equipment Status Ensure that the outdoor...
03 Mar, 2021 Comments: 0
Making Noise Running High Pressure (Heating)
Make: York Model or Series: YHJF36 with AHX42 Type: Heat Pump and Air Handler Problem Description: Unit making noise & head pressure a little high Observed Symptoms: Head pressure around 350 psi Head pressure drops when electric heat comes on Indoor blower speed increases when...
16 Nov, 2017 Comments: 0
YHJF60 Add-On Heat Pump - Low Heat When Cold
YHJF60 Add-On Heat Pump Re: Low Heat When Cold Outside Unlike all other sizes of the YHJF Heat Pump, the 5 Ton model has a 2-Stage compressor and a YorkGuard VI module. In an Add-On Heat Pump application, the YorkGuard VI module uses its Outdoor Ambient Sensor and a field-installed Bonnet...
06 Nov, 2020 Comments: 0
Heat Pump - Low Heat
York Heat Pumps: Heating Re: Low Heat The customers reports that the heat pump doesn't provide enough heat and that they only get warm air when the auxiliary heat kicks on. Other symptoms include: Higher than normal electric bill; System runs continuous. Qty Possible Causes: 1...
06 Nov, 2020 Comments: 0
YHJF - Defrost Problem/Outdoor Coil Frozen
York Heat Pump: YHJF24 - 48 Re: Not Defrosting / Frozen The YHJF 2 to 4 Ton models use a Demand Defrost control board (the 5 Ton model uses a Yorkguard VI) The board uses an Ambient (outdoor) Sensor and Liquid Line Sensor to determine the proper conditions for defrost to occur. Qty ...
19 Jan, 2021 Comments: 0
YHJF - High Pressure Lockout - Heating Mode
York Heat Pump: YHJF Re: High Pressure Lockout - Heating Mode The heat pump was running in normal heat mode (not in defrost) and the high pressure switch tripped. Qty Possible Causes: 1 Refrigerant OverCharge 1 Bad O/D Expansion Valve Bad Blower Motor /...
01 Mar, 2021 Comments: 0