This is a loss of communication with the main control circuit board.
Testimonial: "so that means my customer needs a new pc board?"
No, it may be a defective electrical connection, check them all.
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SOURCE: indoor unit flashes 5 times. error code meaning?
E-5 -Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4
SOURCE: Hi my LG healthplus inverter
Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5
kOhm at 25C. If not replace sensor
SOURCE: kenstar split airconditioner display E6 error what does this mean
Kenstar is displaying F8 error
SOURCE: What is F8 error code in Whirlpool Inverter split air-conditioned mean?
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