Si20-701_B
Troubleshooting by Remote Controller
78
UA - 05 Indoor-Outdoor transmission
error between slave 1 and
outdoor unit
There is an error in
transmission between the
outdoor unit and slave indoor
unit 1. Check for the
connection of the jumper
between the slave indoor unit
(with no remote controller
connected) and the outdoor
unit.
UA - 07 Indoor-Outdoor transmission
error between slave 2 and
outdoor unit
There is an error in
transmission between the
outdoor unit and slave indoor
unit 2. Check for the
connection of the jumper
between the slave indoor unit
(with no remote controller
connected) and the outdoor
unit.
UA - 09 Indoor-Outdoor transmission
error between slave 3 and
outdoor unit
There is an error in
transmission between the
outdoor unit and slave indoor
unit 3. Check for the
connection of the jumper
between the slave indoor unit
(with no remote controller
connected) and the outdoor
unit.
UF - 01 Incorrect wiring
There is an error in wire
connections for transmission
between indoor and outdoor
units (judged with the indoor
unit). Check for the
connections of jumpers 1, 2,
and 3 between the indoor and
outdoor units.
UF - 02 Piping connected the other
way round
There is an error in operation
mode and refrigerant piping
detection temperature. Check
for any refrigerant piping
connected the other way
round, refrigerant shortage,
etc.
Error code
Troubleshooting
Description of error
Description of diagnosis