Nibe S1155 - Maintenance of S1155;S1255; Regular checks

Distribution boxes
UN
-X29
-X28
0-5V 1
+5V 2
AUX1 3
AUX2 4
AUX3 5
AUX4 6
AUX5 7
AUX6 8
AUX7 9
AUX8 10
BT6 11
BT25 12
1
1
2
3
2
3
4
5
6
7
8
9
10
11
12
GND
+12V
B
A
OT+
OT−
0-5V
PWM0
PWM1
CPU
EXT COM
INT COM
ERROR
POWER
+5V
GND
BE1
BE2
BE3
K10
-X27
NO
O
NC
AUX-RELAY
BT50 13
BT1 14
-X30
FQ10-S2FQ10AA2
RF3
RA1
ELECTRICAL COMPONENTS
Base cardAA2
Temperature limiterFQ10
FQ10-S2 Reset button for temperature limiter
Choke
1
RA1
EMC filter
2
RF3
1
Only for 12 kW 3x400 V
2
Only for 25 kW
Cooling sections
6 kW
UN
BT11
BT12
BT10
BT3
GP2
QM2 QM1
GP1
AA3
RF2
1x230 V 12 kW
3x230 V 12 kW
UN
BT11
BT12
AA3
BT10
BT3
GP2
QM2
QM1
GP1
RF2
3x400 V 12 kW
UN
BT11
BT12
BT10
BT3
GP2
QM2 QM1
GP1
AA3
RF2
16 kW
UN
BT11
BT12 RF2
BT10AA3
BT3
GP2
QM2 QM1
GP1
25 kW
UN
BT12
QA40
QM1
GP1
BT3
BT11
QM2
GP2
BT10
RF2
AA3
6 kW
EP2
CA1
RA1
BP1
BT14
QA40
BT15
GQ10
BP2
QN1
EB10
EP1
HS1
XL21
XL20
BT17
NIBE S1155Chapter 3 | The heat pump design12