The CDM9 Troubleshooting Guide highlights common points of failure:
If the unit fails to start after verifying voltages (e.g., 24V AC between X1:7 and X1:3/X1:5), the power or processor cards may require replacement. crawford cdm9 950 installation manual
, including critical jumper settings (e.g., X2 and X3) and lid contacts (X4 and X5). Commissioning and Calibration The CDM9 Troubleshooting Guide highlights common points of