If your machine fails to start and the GMR32B LED is flashing, refer to these common issues:
If the unit is not performing as expected, check the following: Potential Cause Blown internal fuse Replace fuse with correct rating Overheating Poor ventilation Check fan and clearance Erratic Control Signal interference Use shielded control cables Status LED Red Input phase loss Verify all incoming power lines 🛡️ Maintenance and Safety gmr32b phase controller manual
The GMR32B is maintenance-free except for: If your machine fails to start and the
Check heatsink temperature, supply voltage on all phases (three-phase model), and external fuses. gmr32b phase controller manual
Small footprint makes it easy to integrate into existing electrical panels.