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Panasonic Understanding Mini Ecoi Outdoor Circuits And Indoor Unitver2 Schematic Sheets Manual

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Page 1

Understanding Mini ECOi Outdoor Circuits and Indoor Unit Circuits 

Page 2

Outdoor 
Board 

Page 3

Mini-ECOi Outdoor Unit Electrical Circuits – Line Voltage 
Power Circuits 
(CHX03652, Tech Data Manual Page 6-2)
FB: Filter Board      BD: Bridge Diode      Main PCB: Control Board      HB HIC Board
R/S:  Main 208/ 230 VAC to FB
Main 
Power  In
AC1 & AC2 :  Main 
208/230 VAC to BD 

Page 4

Mini-ECOi Outdoor Unit Electrical Circuits – 280VDC 
Power Circuits 
(CHX03652, Tech Data Manual Page 6-2)
FB: Filter Board      BD: Bridge Diode      Main PCB: Control Board      HB HIC Board
Yel/Blu : 280 VDC 
from BD to FB
HIC+/- :  280 VDC 
from BD to FB to  HIC
Main Power In
DC280 :  280 VDC from FB 
to Main PCB; allows LEDs  to light on Main PCB 

Page 5

Mini-ECOi Outdoor Unit Electrical Circuits – DC280 to Fan Motor 
#2 Board (CHX03652, Tech Data Manual Page 6-2)
FB: Filter Board      BD: Bridge Diode      Main PCB: Control Board      HB HIC Board
Main Power In280 VDC - HIC12 VDC - PRYAC200 Volts
DC280V2:  280 VDC 
from Main PCB to Fan 
PCB – Provides primary  power for fan 

Page 6

Mini-ECOi Outdoor Unit Electrical Circuits – Control Feedback to 
Main PCB (CHX03652, Tech Data Manual Page 6-2)
FB: Filter Board      BD: Bridge Diode      Main PCB: Control Board      HB HIC Board
Main Power In280 VDC - HIC12 VDC - PRYAC200 Volts
15V2:  Control Feedback 
to Main PCB 

Page 7

Mini-ECOi Outdoor Unit Electrical Circuits – Fuses for 
Fan Motors (CHX03652, Tech Data Manual Page 6-2)
FB: Filter Board      BD: Bridge Diode      Main PCB: Control Board      HB HIC Board
Main Power In280 VDC - HIC12 VDC - PRYAC200 Volts
Fuse 1 & Fuse 2: 
Fuses to Protect 
Condenser Fan Motors
15VDC Feedback 

Page 8

Mini-ECOi Outdoor Unit Electrical Circuits (CHX03652, 
Tech Data 6-2)
WHT:  208/230 
VAC from FB to BD
Yel/Blu : 280 VDC 
from BD to FB
HIC+/- :  280 VDC 
from BD to FB to  HIC
12 VDC 
Output to FB
DC280 :  280 VDC from FB 
to Main PCB; allows LEDs  to light on Main PCB
R/S :  Main 208/230 
VAC to FB
AC200 :  200 VAC 
from FB to Main PCB
AC Volts to  Comp.  Varies 
depending 
upon meter  (look for 
200 – 
450vac), 
also check  Amps
HIC BOARD CHECK :  1) Turn Power Off  2) Disconnect HIC+ and HIC- wires,...

Page 9

Schematic Diagram – Alternative Style  
(CHX06052 Tech 
Data 6-5)
AC1/AC2 :  
208/230 VAC 
from FB to BD
FB : Filter Board      BD: Bridge Diode      Main PCB: Control Board      HB HIC Board
DC+/- :  280 VDC 
from BD to FB
DC280 :  280 VDC from FB to 
Main PCB; allows LEDs to 
light on Main PCB
R/S: Main 208/230 
VAC to FB
HIC+/-:  280 VDC 
from BD to FB to HIC
PRY :  12 
VDC Output
CM :  AC Volts to 
Comp.  Varies 
depending upon 
meter (look for 200  – 450vac), also 
check Amps
HIC BOARD CHECK :  1)...
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