E1 error (Outdoor Unit)
If E1 fault has not cleared:
Check the continuity of the “Bridge Rectifier”
as illustrated below
.
Turn off the power & let the inverter electrolytic capacitors completely discharge.
Identify the diodes individual ‘Plus’ and ‘Minus’ connections so as to test each diode's forward and
reverse resistance values. The diagrams listed below illustrate the method of achieving this.
Relevant test points on the main outdoor PCB.
Set the multimeter to a DC Mega Ohms setting.
Place the Positive probe on the
~
pin of the rectifier & the Negative probe on the
+
pin of the rectifier.
Place the Positive probe on the
O
pin of the rectifier & the Negative probe on the
+
pin of the rectifier.
Place the Positive probe on the
-
pin of the rectifier & the Negative probe on the
~
pin of the rectifier.
Place the Positive probe on the
-
pin of the rectifier & the Negative probe on the
O
pin of the rectifier.
Note:
Insure the multimeter probes are placed in their correct orientation
as specified above.
Note:
If any of the above tests indicate a “Short Circuit” replace the main PCB assembly.
All of the above tests should read several Mega Ohms.
Page 10 KSSSI90
