Troubleshooting Guide

Table Of Contents
Remarks:
Use a multimeter to test the DC voltage between #2 port(or S/L2 port) and #3 port(or N/S port) of outdoor unit.
The red pin of multimeter connects with 2 port(or S or L2 port), while the black pin is for 3 port(or N or S port).
When the AC is normal running, the voltage is moving alternately between positive values and negative values.
If the outdoor unit has faulted, the voltage will fluctuate at positive values.
If the indoor unit has faulted, the voltage will remain at a certain value.
Use a multimeter to test the resistance of the reactor which does not connect with capacitor.
The normal value should be around zero ohm. Otherwise, the reactor is malfunctioning.
Note: The picture and the value are only for reference, actual condition and specific value may vary.
S and N
or
L2 and S
or
2 and 3
Troubleshooting 21