Hitachi mini-HNRQ1 Series Service Manual page 57

TROUBLESHOOTING
a. Outdoor Unit Board (PCB1)
Part Name
LED1 (Red)
LED2 (Green)
LEDs LED3 (Yellow)
LED4 (Red)
LED6 (Red)
SEG SEG1
Definition of DIP Switch:
No. DIP Switch Code
1 DSW1
2 DSW2
3 DSW3
4 DSW4
5 DSW6
6 DSW7
Power Source Indicator for Main Board (Low Voltage)
Normal Condition: Activated /ON
It indicates the communication state between the Main Board and Driven Board.
Normal Condition: Flashing
It indicates the communication state between the indoor unit and outdoor unit.
Normal Condition: Flashing
Power Source Indicator for Outdoor Unit PCB (280VDC)
Normal Condition: Activated /ON
Power Source Indicator for Outdoor Unit PCB (from PCB2)
Normal Condition: Activated /ON
It indicates: "Alarm", "Protective Safety Device has Tripped" or "Checking Items".
Definition
Test Run
Function Setting
Model Setting
System Address Setting:
Double Digit
Function Setting
Function Setting
Function Information
Abnormal Condition: Deactivated /OFF
Abnormal Condition: Deactivated /OFF
Abnormal Condition: Deactivated /OFF
Abnormal Condition: Deactivated /OFF
Abnormal Condition: Deactivated /OFF
No. DIP Switch Code
7 PSW1
8 PSW2
9 PSW3
10 RSW1
11 SEG1
12 TP1
50
Definition
Manual Defrosting
Decrease ▼
Increase ▲
System Address Setting:
Single Digit
7-segment Display
Test Port for Factory