Mini VRF SYSTEM
Trouble Diagnosis
3
3-45
3. Mini VRF System Alarm Codes
P16 Overcurrent of Inverter Compressor
Check of content
2.
Meaning of Alarm
1.
Secondary current effective value detected the overcurrent (trip current value).
Single-phase model : Trip current = 24.0 A
Single-phase model : xx A = 45.0 A
3-phase model : Trip current = 18.0 A
3-phase model : xx A = 36.0 A
Secondary current instantly detected over xx A.
•
•
0-1
-
Yes
No
0 Multiple
factors
7-1
0-2
1 Power
Source
2 Board
wiring
3
Compressor
wiring
1-1
Correct the wiring
1-2
Yes
No
Power cord connections are loose.
Replaced the board, but it occurred again immediately.
-
Yes
No
Replace compressor
along with adding oil,
then recheck from 1-1
1-2
Test the power supply
1-3
Yes
No
Test the power supply
1-4
Yes
No
1-3
Extreme fluctuations in voltage.
Test the power supply
2-1
Yes
No
1-4
An open phase state is observed.
Replaced the compressor (added oil, if it was necessary)
but it occurred again immediately.
Rated power voltage is not 10%.
2-1
Correct
2-2
Yes
No
Disconnected parts, miswiring and/or poor connections (loose)
are observed in the connections on the CR board and/or in the
connections of components that are connected by wiring from
the CR board.
2-2
Correct
2-3
Yes
No
Correct
2-4
Yes
No
2-3
Disconnected parts, miswiring and/or poor connections (loose)
are observed in the connections of outdoor board(s) that are
connected by wiring from the HIC board.
Correct
2-5
Yes
No
2-4
Disconnected parts, miswiring and/or poor connections (loose)
are observed in the connections of HIC boards connected by
wiring from the CR board.
Correct
2-6
Yes
No
2-5
Disconnected parts, miswiring and/or poor connections (loose)
are observed in the connections of HIC board(s) that are
connected by wiring from the outdoor board.
Correct
3-1
Yes
No
2-6
Disconnected parts, miswiring and/or poor connections (loose)
are observed in the connections of HIC board(s) that are
connected by wiring to a compressor.
Disconnected parts, miswiring and/or poor connections (loose)
are observed in the connections of outdoor board(s) that are
connected by wiring from the CR board.
3-1
Correct
3-2
Yes
No
Disconnections and/or miswiring are observed in the
connecting location of the compressor terminals.
3-2
Eliminate looseness by
changing the terminals,
or crimping the
terminals again.
4-1
Yes
No
Conditions such as burned terminal covers and/or discolored
terminals are observed in the connecting location of the
compressor terminals.
SM830209-00̲Mini̲VRF SYS.indb 45
SM830209-00̲Mini̲VRF SYS.indb 45
2012/01/11 18:25:39
2012/01/11 18:25:39
