Carrier 38QHC009D8S Series, Service Manual

Page: 41 / 55

39
Remark:
Use a multi meter to test the resistance
of the reactor which does not connect
with capacitor.
The normal value should be around zero
ohm. Otherwise, the reactor must have
malfunction and need to be replaced.
Remark:
Use a multimeter to test the DC voltage
between 2 port and 3 port of outdoor unit.
The red pin of multimeter connects with 2
port while the black pin is for 3 port.
When AC is normal running, the voltage is
moving alternately as positive values and
negative values
If the outdoor unit has malfunction, the
voltage has always been the positive
value
While if the indoor unit has malfunction,
the voltage is a fixed value.