Johnson Controls Z Series Installation And Maintenance Manual page 46

8. PFC (correction for power factor) malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit)
Main detection point:
connection wire
of reactor (L) of
outdoor unit and
PFC capacity
If there is damaged
short circuit
Remove PFC capacity
and test resistance of
two terminals
If the resistance
Cut the terminal of reactor,
test the resistance
between two terminals of
reactor with ohmic meter
If there is damaged
short circuit
control board
Installation and Maintenance
Start
Check the
Yes
No
Capacity is
short
Yes Y
value is 0 circuit and
replace it
No
Replace the
Yes Y
reactor
No
Replace
AP1
End
Replace
connection
wire with circuit
diagram
No
Re-energize
the unit and
start it
No N
Re-
energize
the unit and
start it
N
No
If the malfunction is
removed?
If the malfunction is
Yes Y
removed?
If the malfunction is
Yes Y
removed?
Yes
Y
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