MrCool DIY-MULTI2-18HP230C, Service Manual

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 Troubleshooting 15 
For key board models,
Number of
Presses
Display Remark
0 Normal display Displays running frequency, running state, or malfunction code
1
Quantity of indoor units with
working connection
Display Number of indoor unit
1 1
2 2
3 3
4 4
2
Outdoor unit running mode
code Stanby: 0,Fan only: 1, Cooling: 2, Heating: 3, Forced cooling:
4, Forced defrostling: A
3
Indoor unit A capacity
The capacity unit is horse power. If the indoor unit is not
connected, the digital display shows the following: “--”
(9K:1HP,12K:1.2HP,18K:1.5HP)
4 Indoor unit B capacity
5 Indoor unit C capacity
6 Indoor unit D capacity
7
Indoor unit E capacity
8
Indoor unit A capacity demand
code
Norm code*HP
(9K: 1HP,12K: 1.2HP,18K: 1.5HP)
9
Indoor unit B capacity demand
code
10
Indoor unit C capacity demand
code
11
Indoor unit D capacity demand
code
12
Indoor unit E capacity demand
code
13
Outdoor unit amendatory
capacity demand code
14
The frequency corresponding
to the total indoor units'
amendatory capacity demand
15
The frequency after the
frequency limit
16
The frequency sending to
compressor control chip
17
Indoor unit A evaporator outlet
temperature (T2BA)
If the temperature is lower than -9 o C, the digital display
shows “-9.” If the temperature is higher than 70 o C, the digital
display shows “70.” If the indoor unit is not connected, the
digital display shows: “--”
18
Indoor unit B evaporator outlet
temperature (T2BB)
19
Indoor unit C evaporator outlet
temperature (T2BC)
20
Indoor unit D evaporator outlet
temperature (T2BD)
21
Indoor unit E evaporator outlet
temperature (T2BE)