Communication Abnormality With Central Controller; Reversed Piping Or Bad Communication Wiring Detection - Daikin Sky Air FAA71BUV1B Service Manual

3 | Troubleshooting
3.3.23 UE-00 – Communication abnormality with central controller
3.3.24 UF-00 – Reversed piping or bad communication wiring detection
Service manual
38
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Transmission abnormality
with central controller.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
If all indoor units display error UE-00
1 Check the F1‑F2 transmission line between the central controller and terminal
X1M of the outdoor unit. See
Possible cause: Faulty or interruption in transmission line between central
controller and outdoor unit.
2 Check the F1‑F2 transmission line between the indoor units and outdoor unit.
See "5.1 Electrical
Possible cause: Faulty or interruption in transmission line between indoor
units and outdoor unit.
If ONLY 1 indoor unit displays error UE-00
1 Check if the indoor unit has an assigned group address. Set a group address as
needed. See installation manual of the remote controller for procedure to set
group address.
Possible cause: No group address assigned to indoor unit.
2 Perform a power reset on the central controller and check if error is resolved.
3 Using the service monitoring tools, check the communication registers.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
The interunit wiring
between indoor and
outdoor unit is incorrect.
Piping abnormality.
Effect
Unit will stop operating.
"5.1 Electrical
4
circuit" [ 83].
Effect
Unit will stop operating.
Reset
Auto reset.
4
circuit" [ 83].
Reset
Automatic reset.
Sky Air indoor units
ESIE22-01 – 2022.02
FAA71+100BUV1B