Hisense F4 Error Code
Low-pressure protection
Causes & Recommended Solutions
The F4 error code indicates a communication issue between the control board (PCB) and the sensor, leading to a system malfunction.
Common Causes of the F4 Error Code
Loose or Damaged Wiring
Wiring issues between the PCB and the sensors can trigger this error.
Faulty PCB
The PCB may be malfunctioning and unable to communicate properly with the sensors.
Sensor Malfunction
A malfunctioning sensor may send incorrect signals to the PCB.
Recommended Solutions
Power Cycle the System
Turn off the air conditioner for 5–10 minutes, then turn it back on to reset communication.
Inspect the Wiring
Check for loose or damaged wiring connections.
Test the PCB
A technician can inspect and replace the PCB if necessary.
Call Paragon Air for Expert Help
Paragon Air can quickly resolve communication errors. Contact us for fast and professional service.