Connection Card – Compressor / Fan / Sensors / Pressure Stats

Part No. 818643

Function:

• Multi-functional connection interface card responsible for signal and power routing to:

  • Compressor

  • Fan

  • Temperature sensors: BT21, BT20, BT16

  • High Pressure (HP) and Low Pressure (LP) switches

• Manages system coordination, sensor feedback, and safety monitoring

Location:

• Installed in the compressor section of the Nibe F370 unit

Typical Fault Indicators:

• LP / HP alarms

• Incorrect or missing sensor readings (BT21, BT20, BT16)

• No power to fan or compressor

• General system malfunctions related to component communication or activation

Compatibility:

• Specifically compatible with:

  • Nibe F370

Application:

• Used to restore full functionality and control to key heat pump components during repairs or troubleshooting

• Recommended replacement when diagnosing sensor errors, pressure switch issues, or power loss to major units