Excessive Number Of Indoor Units - Daikin E-Series Service Manual

Troubleshooting for Outdoor Unit

7.33 Excessive Number of Indoor Units

UA
Remote Control
Display
Applicable
AII indoor unit models
Models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
" Excess of connected indoor units
Supposed
" Defect of outdoor unit PCB (A1P)
Causes
" Mismatching of the refrigerant type of indoor and outdoor unit.
" Setting of outdoor PCB was not conducted after replacing to spare parts PCB.
Troubleshooting
∗ The number of indoor units that can be connected to a single outdoor unit system depends on
346
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is the outdoor
P.C. board replaced
to spare parts PC
board?
NO
The total
of indoor units
displaying "UA" and
indoor units connected to the
same refrigerant system is
within connectable
number of
unit*
YES
Push and hold the RESET
button on the outdoor unit
PC board for 5 seconds.
Does a malfunction occur?
YES
Does the
refrigerant type of indoor
and outdoor unit
match?
YES
the type of outdoor unit.
YES
NO
NO
NO
SiENBE18-621
The refrigerant classification has
not been set yet.
There are too many indoor units
within the same refrigerant
system.
Normal
Matches the refrigerant type of
indoor and outdoor unit.
Replace outdoor unit PC board
(A1P).
(V3169)
Troubleshooting