Eliwell Sb655 - C Manual _hot_
The user interface allows for rapid status checks and simple parameter editing. Indicator LEDs
The Eliwell SB655 C is a high-performance, programmable electronic controller designed primarily for commercial refrigeration, HVAC systems, and food processing applications. Part of Eliwell’s robust lineup of industrial automation solutions, this controller manages complex temperature, humidity, and pressure parameters with precision.
: Supports Scroll, Semi-Hermetic, and Screw compressors with balanced operating hours.
: An adaptive regulation function balances fluid temperatures in chillers working without an external buffer or water storage tank, preventing short-cycling. Wiring and Connection Architecture
I can provide the exact wiring schematic references or specific parameter values for your setup. AI responses may include mistakes. Learn more Share public link eliwell sb655 c manual
Press , enter the password (default is usually 15 or 22 ), and press Set . Use the arrow keys to scroll through the parameters. Critical Parameter Reference Table Description Typical Range Standard Default diF Temperature Differential (Hysteresis) 0.1°C to 30.0°C HSE Maximum Setpoint Limit Setpoint to 99°C LSE Minimum Setpoint Limit -55°C to Setpoint dty Defrost Type (0 = Electrical, 1 = Hot Gas, 2 = Off) dit Interval Between Defrost Cycles 0 to 120 hours dEt Maximum Defrost Duration 1 to 250 minutes 30 minutes FSt Fan Stop Temperature -50°C to 120°C Ont Compressor On Time during probe failure 0 to 250 minutes 15 minutes Defrost Management
The manual details how the controller handles different power steps and compressor types (Scroll, Semi-Hermetic). Optimization of 4 steps of power output.
This guide offers a solid foundation for using the Eliwell SB655C. However, for any installation, parameter changes, or complex troubleshooting, always refer to the official full manual and consult with a qualified HVAC professional.
| Alarm Code | Meaning | Likely Cause & Solution | | :--- | :--- | :--- | | | Internal EEPROM error | Faulty controller; replace unit. | | E1 | Probe 1 faulty (open circuit) | Broken probe, loose wire at terminals 2/3, or wrong S1P setting. | | E2 | Probe 1 short circuit | Moisture in probe tip, damaged probe, or short across terminals 2-3. | | HA | High temperature alarm | Temperature above ALU (alarm upper limit). Check compressor, refrigerant, fans. | | LA | Low temperature alarm | Temperature below ALL (alarm lower limit). Check setpoint, probe placement. | | PFA | Probe failure alarm – output forced | Controller is running a timed cycle because E1/E2 is active. Check probe wiring. | The user interface allows for rapid status checks
Use flexible copper wires with a cross-section of 0.5 mm² to 2.5 mm² (AWG 20 to AWG 14) for power supply and relay connections.
CPU_SB -- TTL Port --> TERM
For full setup details, you can download the SB655 Installation & User Manual or view the official product page on Eliwell's website .
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Note: Additional parameters for defrost (if using an external SSR/relay) and digital inputs exist but are rare on the base SB655 C model.
: Fault on probe 1 or 2 (shorted or interrupted). Check probe type parameter H00 to ensure it matches the physical sensor.
Before mounting the controller, ensure the power supply is completely disconnected. The SB655 C is designed for panel mounting with a standard 71x29mm cut-out. Wiring Best Practices