Since the SB 655 C is a legacy model (discontinued by Eliwell), follow these steps:
The controller uses a folder-based menu structure. Here is how to navigate it: eliwell sb655 c manual best
The accuracy of your SB655/C depends on the probe placement. Use the button to define your target temperature. If you notice a discrepancy between the display and an independent thermometer, look for the calibration parameter (usually CA1 ) to apply an offset. 2. Defrost Management Since the SB 655 C is a legacy
| Parameter | Name | Recommended Setting | Why it matters | | :--- | :--- | :--- | :--- | | | Setpoint | 2°C to 5°C (Cooler) | The target temperature. | | Hy | Differential (Hysteresis) | 1.0°C to 2.0°C | Prevents short cycling. If SP=3°C and Hy=2°C, the compressor cuts in at 5°C and out at 3°C. | | LS | Minimum Setpoint Limit | -30°C | Prevents users from setting a temp too low. | | US | Maximum Setpoint Limit | 10°C | Prevents users from setting a temp too high. | | OdO | Off delay after defrost | 0 minutes | Time delay before compressor re-starts after defrost (dripping time). | | dtE | Defrost type | EL (Electric) or IN (Hot gas) | Critical setting. Wrong type blows fuses. | | idd | Interval between defrosts | 6 (hours) | How often defrost runs. | | Ld | Maximum defrost duration | 30 (minutes) | Safety timer to prevent overheating coils. | | ALu | High temperature alarm | 10°C | Alerts if the cold room stays above 10°C. | | ALL | Low temperature alarm | -5°C | Alerts if freezing too much (for coolers). | If you notice a discrepancy between the display
Full access to all configuration variables – from setpoint and differential to defrost type, evaporator fan settings, and alarm thresholds.