Gmr32b Phase Controller Manual [2021] Page

| Flashes | Error | Solution | |---------|-------|----------| | 1 | Heatsink over-temperature (>95°C) | Reduce load, improve cooling, check fan. | | 2 | Line frequency out of range (<45 Hz or >65 Hz) | Check generator or UPS output. | | 3 | Phase loss (three-phase model) | Inspect incoming fuses, contactors, wiring. | | 4 | External semiconductor fuse blown | Replace with exact type – do not upsize. | | 5 | Control signal loss (<2 mA or <0.5 V) | Check transmitter, loop wiring, or potentiometer. | | 6 | Internal SCR short detected | Power off – replace controller (SCR failure). |

-10°C to +55°C (standard); up to +60°C for advanced solid-state modules. Relative Humidity: 45% to 85% RH (non-condensing). Enclosure Footprint: 79 mm × 23 mm × 79 mm. ⚡ Comprehensive Fault Detection Mechanisms gmr32b phase controller manual

-10°C to +55°C (14°F to 131°F) without condensation. 2. Safety Precautions and Installation Guidelines | | 4 | External semiconductor fuse blown