York Heat Pump: YH2E / YH2F Re: Lockout Codes / Fault Codes The control shall provide fault codes using the Status LED. The table below describes the LED displays during fault codes. Unless otherwise specified, the control shall provide flashes that are a 1/3 second on and 1/3 second off for...

York Heat Pump: YH2F Re: High Pressure - Code 2 or Code 3 (Cooling) CODE 2 = High Pressure Switch Fault (Not in Lockout) CODE 3 = High Pressure Lockout (Multiple High Pressure Switch Faults) Qty Possible Causes: Excess Refrigerant Charge 2 Bad O/D Fan Motor ...