Malfunction Of Transmission Between Indoor Unit And Remote Controller (U5) - Daikin FCQ35B7V1 Service Manual

Error Codes: System Malfunctions
3.3

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

1
Error code
Error generation
Causes
3 3
Troubleshooting
4
5
Caution
3–48
U5
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.
The possible causes are:
Malfunctioning remote controller
Malfunctioning indoor PCB
Outside cause (noise...)
Connection of two master remote controllers (when using two remote controllers).
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
ESIE05-04
Part 3 – Troubleshooting