Eliwell | Sb655 C Manual Best

The Eliwell SB655/C is a universal electronic controller designed for centralized air-conditioning units, supporting up to two circuits and managing various compressor types, including scroll, semi-hermetic, and screw. Manuals & Documentation

1. Neutral vs. Line: The SB655 C requires a dedicated neutral (N). Many electricians mistakenly ground the neutral terminal. Read the wiring diagram on page 4 of the official manual.
2. Probe Type: The default probe is NTC (10k ohms at 25°C). If you wire a PTC probe without changing parameter Pbc (Probe configuration), your readings will be off by 50°F.
3. Defrost Heater Wiring: The relay for defrost (Terminal 6-7) is usually a 16A resistive relay. Do not wire inductive loads (fans/pumps) here without a contactor.

Troubleshooting with the Best Manual: Alarm Codes

When the SB655 C flashes an alarm, you need the best error code list. Here is the cheat sheet: eliwell sb655 c manual best

This is where most energy is wasted. The manual will guide you through: dIt (Defrost Interval): How often the cycle runs. The Eliwell SB655/C is a universal electronic controller

Introduction