Florida Heat Pump: EM015 Re: Diagnostic Codes / Error Codes / Fault Codes The control board in these WSHPs has a Green status light and a Red fault indication light. The Red fault light will flash to indicate fault status. Red Flashes Description 1 High Pressure Switch...

Florida Heat Pump: EM015 Re: Error Code 1 / Fault Code 1 Code 1 = High Pressure Switch Fault Possible Causes (From Most to Least Likely): High Refrigerant Discharge Pressure Cooling Low Water Flow Refrigerant Overcharge Heating Low Airflow Refrigerant Overcharge ...

Florida Heat Pump: EM015 Re: Error Code 2 / Fault Code 2 Code 2 = Low Pressure Switch Fault Possible Causes (From Most to Least Likely): Low Refrigerant Charge Bad Expansion Valve Low Water Flow (Heating) Low Airflow (Cooling) Bad Pressure Switch CHECKOUT Check...