Testing Board For Au48Nfibia - Haier H-MRV Series Service Manual

Testing board for AU48NFIBIA:

Press button "mode", the display will change over in the following sequence:
State
Frequency
Current output
Voltage on DC side
Ambient temp
Discharging temp
Suction temp
Defrosting temp
Coil temp
Indoor unit quantity
Open degree of EEV
Note: Please connect the wire on power off. Insert the testing board on the CN302 of the
outdoor PCB. The part number is 0010451601.
In addition, we set a testing port CN303 which can be connected to the computer through
another testing device (part number: 0010451800). The distributor can get the testing device
and the testing software from us.
Testing procedure:
1. After the unit powered off, connect the wire of testing board to CN302 port, and then pull
down the communication wire between outdoor and indoor unit.
2. Check if the wiring is right. If yes, power on the outdoor unit.
3. On the operation panel of the testing board, the relative data can be modified.
4. Press "Prog.", enter data editing mode.
5. Set data "Pr-00" as "0"，then data can be edited. Press "Enter" to confirm.
6. The other data can be set according to the requirement like this way.
7. After all the data be modified, set "Pr-00" as "1".
8. Press "Prog.", quit out of data editing mode.
9. Note: Data of the chip is very important, the improper modification will cause the main
parts damaged such as compressor. So before modification, please contact with us.
10. After quitting from data editing mode, operation board will display "P r.E" which will
flash. After 3 minutes, it will display "b.P.160". At this time, pressing the
the program.
11. After reset, power off the outdoor. For 1~2 minutes, the outdoor release all the electricity,
plug the communication wire between outdoor and indoor to the original position, the
modification is over.
Display
Fxx.xx
A xx.x
U xxx
1 xx
2 xx
3 xx
4 xx
5 xx
6 xx
7 xxx
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Run Stop Defr. Cool Heat
Cool
Prog.
Run
Heat
Stop Mode
Enter
to reset