EC52, EC53, EC54, EC55, EH60, and EH61 Error CodesUpdated 42 minutes ago

These codes indicate temperature sensor errors. 

• EC52 Error Code: Outdoor unit coil temperature sensor (T3) error
• EC53 Error Code: Outdoor unit ambient temperature sensor (T4) error
• EC54 Error Code: Compressor discharge temperature sensor (TP) error
• EC55 Error Code: IGBT temperature sensor (TH) open-circuit or short-circuit error 
• EH60 Error Code: Indoor unit room temperature sensor (T1) error
• EH61 Error Code: Indoor unit evaporator coil temperature sensor (T2) error

If the sampling voltage is low than 0.06 V or higher than 4.94 V, an error code appears on the LED display.  

Recommended Parts to Prepare

• Connection wires
• Indoor or outdoor unit PCB
• Sensors