Danfoss Optyma iCO2 Instructions Manual page 25

Instructions
9.2 Explanation of control
States of operation on the condensing unit can be observed on the segment and LED on the "condensing unit control PCB". Method of the segment display,
display items, and control contents are as explained below.
1. Display method
1. Each item is displayed on the 7-segment display of 3-digit x 2 on the condensing unit PCB.
2. To control the display, use SW7 to SW9 buttons (Refer page no 54).
SW9: Button to set the tens place of the code display.
SW8: Button to set the ones place of the code display.
SW7: Data delete/write button
3. Select the code No. of each item by pressing SW9 for the tens place or SW8 for the ones place.
There are following 2 types for the identifying alphabet at the code display section.
"C": "C00" to "C99"
"P": "P00" to "P99"
4. If SW9 (tens place) is pressed, it jumps to the leading code at each tens place. It passes over "C00" – "C99", and displays "P00".
5. SW8 (ones place) displays in the order of 0 → 1 → 2 ... 9 → 0. It displays in the order of "P00" → "P01" →"P02" ... " "P09" → "P00".
6. Adjust at the code to change, hold down SW7 (Data write/delete) for 3 seconds continuously.
7. Data at the data display section flickers at every 0.5 second. (Unless SW is pressed for 10 seconds in this state, the write mode terminates.)
8. Press SW9 (tens place) and SW8 (ones place) to change data.
9. If SW7 is pressed for 3 seconds or more continuously in the state of flicker, the date display section changes to the data lighting. By this operation, data
of each item is saved in E2PROM, and the operation is controlled with this content henceforth.
10. Contents which have been changed and saved are used for control even if the power supply is turned off and backed on again.
2. Display priority
1. Display priority is as shown by the following table.
Priority
Receiving of line check command
ROM version display
High ↑
Error display
↓
Operation code display
Low
Compressor oil check operation display
Ordinary channel display
2. If the state of the display at 1 is released, it changes to the auto display.
3. If SW8 or SW9 is pressed in the display at 1, it changes to display [C00].
4. However, if the switch is not pressed for 10 seconds, it displays by the priority of 1).
5. Display change : Special display shows other than CXX, PXX and FXX.
If specialdisplay occurs.
[CXX]
Button operation
No operation for 10 sec.*
Button operation
Fig. 26
© Danfoss | Climate Solutions | 2023.02 | LCA012A024
Display content
Special display
Special
display
release
Auto feed
C9
[QO]
[WLMC], or other
[Exx]
[oPE-X]
[oil]
[Cxx][Pxx][xx]
118A5495A - AN405821998738en-000102 | 25