Daikin FFQ60B7V1B - Malfunction of Transmission between Indoor Unit and Remote Controller (U5)

Error Codes: System Malfunctions ESIE05-04
3–48 Part 3 – Troubleshooting
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3.3 Malfunction of Transmission between Indoor Unit and Remote Controller (
U5
)
Error code U5
Error generation The error is generated when the microprocessor detects that the transmission between the indoor unit
and the remote controller is not normal over a certain amount of time.
Causes The possible causes are:
Q Malfunctioning remote controller
Q Malfunctioning indoor PCB
Q Outside cause (noise...)
Q Connection of two master remote controllers (when using two remote controllers).
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.