How To Read The Led On The Service Monitor - Mitsubishi Electric CMB-WM108V-AA Service Handbook

[ IX LED Monitor Display on the Outdoor Unit Board ]
IX LED Monitor Display on the Outdoor Unit Board

[1] How to Read the LED on the Service Monitor

-1- Outdoor unit board
1. How to Read the LED
By setting the DIP SW 4-1 through 4-10 (Set SW6-10 to OFF.)(Switch number 10 is represented by 0), the operating condition
of the unit can be monitored on the service monitor. (Refer to the table on the following pages for DIP SW settings.)
The service monitor uses 4-digit 7-segment LED to display numerical values and other types of information.
Pressure and temperature are examples of numerical values, and operating conditions and the on-off status of solenoid valve
are examples of flag display.
1) Display of numerical values
Example: When the pressure data sensor reads 18.8kg/cm
The unit of pressure is in kg/cm
 Use the following conversion formula to convert the displayed value into
a value in SI unit.
Value in SI unit (MPa) = Displayed value (kg/cm
2) Flag display
Example: When 21S4a, 21S4b, SV1a are ON. (Item No. 3)
Example: 3-minutes restart mode (Item No. 14)
HWE1708A
7SEG LED
In the example above, 1 through 9 are set to ON, and 10 is set to OFF.
2
2
) x 0.098
- 227 -
SW4
ON
2 3 4 5 6 7 8 9 10
1
2
(Item No. 58)
Upper
Lower
LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8
LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8
GB