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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
7.4.7 Point check function (engineering troubleshooting mode)
A check switch is included on the outdoor PCB. Push SW1 to check the unit's status
while running. The digital display shows the following codes each time the SW1 is
pushed.
Number of Presses Display Remark
0 Normal display Displays running frequency, running state, or malfunction code
1 Quantity of indoor units with working connection -
2 Outdoor unit running mode code Off: 0,Fan only: 1, Cooling: 2, Heating: 3, Forced cooling: 4. Forced defrost: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,24K:2.0HP)
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,24K:2.0HP)
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 (T_2B A)
If the temperature is lower than -9 ℃, the digital display shows “-9.” If the
temperature is higher than 70 ℃, the digital display shows “70.” If the
indoor unit is not connected, the digital display shows: “――”
18 Indoor unit A evaporator outlet temperature (T_2B B)
19 Indoor unit A evaporator outlet temperature (T_2B C)
20 Indoor unit A evaporator outlet temperature (T_2B D)
21 Indoor unit A evaporator outlet temperature (T_2B E)
22 Indoor unit A room temperature (T1A)
If the temperature is lower than 0 ℃, the digital display shows “0.” If the
temperature is higher than 50 ℃, the digital display shows “50.” If the
indoor unit is not connected, the digital display shows: “――”
23 Indoor unit A room temperature (T1B)
24 Indoor unit A room temperature (T1C)
25 Indoor unit A room temperature (T1D)
26 Indoor unit A room temperature (T1E)
27 Indoor unit A evaporator temperature (T2A)
If the temperature is lower than -9 ℃, the digital display shows “-9.” If the
temperature is higher than 70 ℃, the digital display shows “70.” If the indoor unit
is not connected, the digital display shows: “――”
28 Indoor unit A evaporator temperature (T2B)
29 Indoor unit A evaporator temperature (T2C)
30 Indoor unit A evaporator temperature (T2D)
31 Indoor unit A evaporator temperature (T2E)
32 Condenser pipe temperature (T3)
33 Outdoor ambient temperature (T4)
34 Compressor discharge temperature (TP)
The display value is between 30–129 ℃. If the temperature is lower than 30 ℃,
the digital display shows “30.” If the temperature is higher than 99 ℃, the digital
display shows single and double digits. For example, if the digital display shows
“0.5", the compressor discharge temperature is 105 ℃.
35 AD value of current
The display value is a hex number. For example, the digital display
tube shows “Cd”, it means AD value is 205.
36 AD value of voltage
Table 18
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