Bosch BRBA-36HWD1N1-M18 - 13.9 Control Board Overview

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
13.9 Control Board Overview
Outdoor Unit Control Board for 3 Ton Model
Figure 32
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31
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No. Function description
1. Compressor crankcase heater port
2. Reserve
3. Reversing valve port
4. Thermostat wire connections
5. Th sensor port
6. T3 T4 T3L sensor port
7. Pressure transducer port
8. T5 sensor port
9. Communication port (to indoor unit)
10. Electric expansive valve
11. Reserve
12. Reserve
13. High pressure switch port
14. SW2 FORCE BUTTON
15. SW3 CHECK BUTTON
16. Reserve
17. USB port
18. Reserve
19. SW5 Dip SWITCH: Defrost logic settings
20. SW4 Dip SWITCH: Control logic settings
21. LED
22. Reserve
23. ECM motor port
24. Compressor: W port
25. Compressor: V port
26. Compressor: U port
27. Power input
28. Power input
29. Non-replaceable Fuse
30. Ground port
31. Ground port