Hitachi UTOPIA RAS-4HVRP2E Service Manual page 320

10 Troubleshooting
Checking procedure for main parts
Inverter printed circuit board for control: PCB2
No. DIP Switch Code
1 DSW1
2 DSW2
3 DSW3
4 DSW4 System Address Setting: Double Digit
5 DSW6
6 DSW7
Printed Circuit Board for Fan Control: PCB3
Part name
Communication Indicator.
LED1 (Yellow)
Normal condition: Activated / ON.
Communication Indicator.
LED2 (Red)
Normal condition: Activated / ON.
Power source indicator for Fan PCB (3.3V).
LED3 (Green)
Normal condition: Activated / ON.
Power source indicator for Fan (15V).
LED4 (Green)
Normal condition: Activated / ON.
318 SMGB0136 rev.0 - 07/2021
SEG1
PSW3
PSW2
PSW1
TP1
DSW7
Definition
Test Run
Function Setting
Model Setting
Function Setting
Function Setting
LED4
DSW3
DSW2
DSW6
DSW4
DSW1
RSW1
No. DIP Switch Code
7 PSW1
8 PSW2
9 PSW3
10 RDW1
11 SEG1
12 TP1
LED3
Contents of functions
Abnormal condition: Deactivated / OFF.
Abnormal condition: Deactivated / OFF.
Abnormal condition: Deactivated / OFF.
Abnormal condition: Deactivated / OFF.
Definition
Manual Defrosting
(▼)
Decrease
(▲)
Increase
System Address Setting: Single Digit
7-segment Display
Test Port for Factory
LED2
LED1