Hitachi Utopia RPI-2.5HRG Service Manual page 66

(2) Printed Circuit Board in Outdoor Unit
■ Dip Switches and LED Functions on Outdoor Unit Printed Circuit Boards
Name of Internal
Circuit Board
Controlling Board:
PCB1
<Inverter Printed Circuit Board on ISPM>
• LED Functions on Outdoor Unit ISPM
Name of Printed
Circuit Board
* LED (Red)
201
PCB for Outdoor Unit
LED1 LED3
Part Name
14 LED1 Power Source for PCB1
(Red) Normal Condition:
Abnormal Condition:
15 LED2 This LED2 indicates the transmission state between the PCB1
(Green) and ISPM.
Normal Condition:
Abnormal Condition:
16 LED3 This LED3 indicates the transmission state between the
(Yellow) indoor unit and outdoor unit.
Normal Condition:
Abnormal Condition:
18 SEG1 This SEG1 indicate the following: "alarm", "protective safety
device has tripped" or "checking items".
ISPM
PC208
CN8
CN9
CN207
C
TB2
RB
R201
N
R200
P
ZN20
P1
TB3
R216
R215
RB PD
R S
This indicates the voltage between both terminal of capacitor
CB1 and CB2 for inverter part.
Activated: The voltage between both terminals of capacitor,
CB is 50V+20V or greater.
Deactivated: The voltage between both terminals of capacitor,
CB is 50V+20V or smaller.
LED2
Contents of Functions
Activated
Deactivated
Flickering
Activated or Deactivated
Flickering
Activated or Deactivated
PC207
CN206
LED201
LED201
ZN202
P N
T U V W
Function
TROUBLESHOOTING
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