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The error indicated on the PCB display of outdoor unit
DISPLAY
Outdoor sensor error (Short/Open)
Outdoor A cond pipe sensor error (Short/Open)
Outdoor B cond pipe sensor error (Short/Open)
Outdoor C cond pipe sensor error (Short/Open)
A unit test operation error
B unit test operation error
C unit test operation error
A unit test communication error
B unit test communication error
C unit test communication error
A,B,C unit all communication error
A room test operation OK
B room test operation OK
C room test operation OK
Communication unit number display : A unit
Communication unit number display : B unit
Communication unit number display : C unit
(In case of triple split multi air conditioner)
High temperature of the A cond
High temperature of the B cond
Refrigerant leaks
EXPLANATION
REMARK
Be sure to check after applying the power
to the outdoor unit.
Display when the test operation finishes.
• When the pipe temperature difference of
indoor unit (pipe temperature 4 minutes before
- Actual pipe temperature) is less than 5˚C.
Be sure to check during the test operation.
Display of power application.
Display 4 minutes after the COMP is on.
•Normal operation
Unit A,B and C are changed every one second.
A
B
C
The communication lamp is flickering after
display of each unit.
(possibility to check the communication status)
•During the test operation the unit under test
is on and off every 0.25s.
C
I
OMPLETING THE
NSTALLATION
23
E-
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