While the covers 99% of use cases, experienced technicians share these additional insights:
| Code | Meaning | Solution per Manual | |------|----------------------------|-----------------------------------------------------------| | E023 | Cup pressure sensor drift | Re-calibrate zero; replace sensor if drift > 5% | | E045 | Communication timeout | Check Modbus wiring; verify baud rate matches master | | E078 | Overtemperature (H-series) | Reduce duty cycle; clean cooling fan and cup heat sink | | E101 | Cup not detected | Inspect cup lock switch; clean electrical contacts | | E119 | Firmware CRC error | Re-flash firmware via USB bootloader (see Appendix E) |
| Code | Meaning | Solution per Manual | |------|----------------------------|-----------------------------------------------------------| | E023 | Cup pressure sensor drift | Re-calibrate zero; replace sensor if drift > 5% | | E045 | Communication timeout | Check Modbus wiring; verify baud rate matches master | | E078 | Overtemperature (H-series) | Reduce duty cycle; clean cooling fan and cup heat sink | | E101 | Cup not detected | Inspect cup lock switch; clean electrical contacts | | E119 | Firmware CRC error | Re-flash firmware via USB bootloader (see Appendix E) | acu-302-h-cup manual
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