SiE-05C Troubleshooting
Troubleshooting Inverter K Series 157
3.35 Refrigerant System not set, Incompatible Wiring/Piping
Remote Controller
Display
UU
UU
FF
FF
Supposed Causes Improper connection of transmission wiring between outdoor unit and outdoor unit outside control
adaptor
Failure to execute wiring check operation
Defect of indoor unit PC board
Troubleshooting
Wiring check may not be successful if carried out after the outdoor unit has been off for more than 12
hours, or if it is not carried out after running all connected indoor units in the fan mode for at least an hour.
(VF061)
Is indoor - outdoor
and outdoor - outdoor unit
transmission wiring
normal?
Replace indoor unit PC board.
Wiring check may not have been
carried out successfully.
After fixing incorrect wiring, push
and hold the RESET button on the
outdoor unit PC board for 5
seconds.
YES
NO
YES
NO
NO
YES
Wiring
check operation
carried out?
Is indoor
-outdoor and outdoor-outdoor
unit transmission
wiring normal?
∗ The unit will not run for up to 12
minutes.
SI-05C.BOOK Page 157 Monday, November 6, 2000 4:13 PM
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