Wiring Diagram For I/O Module - Bosch Compress 7400i AW Installer's Manual

9.4.2

Wiring diagram for I/O module

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Fig. 23 Wiring diagram for I/O module
[JR0] Pressure sensor low
[JR1] Pressure sensor high
[PL3] Fan, pulse width modulation signal
[TA4] Drip tray temperature sensor
[TC3] Temperature sensor, heat transfer medium outlet
[TL2] Temperature sensor at air inlet
[TR1] Temperature sensor, compressor
[TR3] Temperature sensor at condenser return
[TR5] Suction gas temperature sensor
[TR6] Temperature sensor hot gas
[VR0] Electronic expansion valve 1
[VR1] Electronic expansion valve 2
[EA0] Heater for drip pan
[EA1] Heating cable (accessory)
[F50] Fuse 6.3 A
[PL3] Fan
[SSM] Motor protection in the fan
[VR4] Four-way valve
Compress 7400i AW – 6721833372 (2021/09)
A
B
[A] I/O module
[B] P7=heat pump 5 OR, 1N~
P8=heat pump 7 OR, 1N~
A0=standard
[1] 230 V~ operating voltage
[2] MOD-BUS from transformer
[3] CAN-BUS from installation module of indoor unit
Technical information
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