Initial Led Display - Mitsubishi Electric HP120TNU-A Service Handbook

[10-1 LED Status Indicators ]
10-1-2

Initial LED Display

From power on until the completion of initial settings, the following information will be displayed on the monitor screen.
(Displays No. 1 through No. 4 in order repeatedly.)
No Item
Software version
1
Refrigerant type
2
Model and capacity
3
Communication address
4
After the initial settings have been completed, the information on these items can be checked by making the switch setting
that corresponds to No. 517 in the LED display table.
Only item No. 1 "Software Version" appears on the display if there is a wiring failure between the control board and the trans-
mission line power supply board or if the circuit board has failed. LED may not light up at all.
2
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Display
[0103] : Version 1.03
[ 410] : R410A
[H-20] : Cooling/Heating 20 HP
For the first few minutes after power on, the capacity of
each outdoor unit is displayed. Thereafter, the com-
bined capacity is displayed.
[ 51] : Address 51
Remarks
HWE18220_GB