Bosch BMS500-AAU036-1AHCXC - Compressor Restart Delay; Compressor Discharge Temperature Protection; Fan Speed Malfunction; Inverter Module Protection

| 27
Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
7.3.6 Compressor Current Limit Protection
The temperature interval for the current limit is the same as the range of the T4
frequency limit.
Cooling mode:
Figure 23
ć &
&
R
R
R
R
O
O
7
7


=
=
R
R
Q
Q
H
H


,
,


50
49
45 &
&
R
R
R
R
O
O
7
7


=
=
R
R
Q
Q
H
H


,
,
44
41
40 &
&
R
R
R
R
O
O
7
7


=
=
R
R
Q
Q
H
H


,
,


33
32
&
&
R
R
R
R
O
O
7
7


=
=
R
R
Q
Q
H
H


,
,
CoolReturnI The difference between current limit and shutdown current
CoolT4Zone5I Cooling T4ı50ć current limit value
CoolT4Zone4I Cooling 49˚T4ı45ć current limit value
CoolT4Zone3l
Cooling 44˚T4ı41ć current limit value
CoolT4Zone2l Cooling 40ηT4ı33ć current limit value
CoolT4Zone1l
Cooling 32˚T4ćcurrent limit value
CoolStopI
Cooling stop protection current value
Heating mode:
For other models:
Figure 24
ć

 +HDW7=RQH,

 +HDW7=RQH,

 +HDW7=RQH,
+HDW7=RQH,
HeatReturnI The difference between current limit and shutdown current
HeatT4Zone4I Heating T4ı15ć current limit value
HeatT4Zone3I Heating 14˚T4ı10ć current limit value
HeatT4Zone2l Heating 9 ˚T4ı6ć current limit value
HeatT4Zone1l Heating 5
HeatStopl
Heating stop protection current
˚T4ćcurrent limit value
For Max Performance 36K and 48K, and Regular 48K Systems:
Figure 25
HeatReturnI The difference between current limit and shutdown current
HeatT4Zone4I Heating T4ı15ć current limit value
HeatT4Zone3I Heating 14ć˚ T4ı10ć current limit value
HeatT4Zone2l Heating 9ć˚T4ı6ć current limit value
HeatT4Zone1l Heating 5ć
HeatT4Zone0I
Heating -5ć˚T4≥-9ćcurrent limit value
˚T4ćcurrent limit value
Heat T4Zone4I
Heat T4Zone3I
Heat T4Zo ne2I
Heat T4Zo ne1I
15
14
10
9
6
5
T4/°C
Heat T4Zone0I
Heat T4Zo ne-1I
-4
-5
-9
-10
HeatT4Zone-1I
HeatStopI
Heating -10ć˚T4 current limit value
Heating stop protection current value
7.3.7 Indoor / Outdoor Units Communication Protection
If the indoor units do not receive the feedback signal from the outdoor units for 2
consecutive minutes, the unit stops. The unit displays the failure code.
7.3.8 High Condenser Coil Temp. Protection
Figure 26
T3
Resume
Off
Decrease
Hold