If you are searching for the , you likely have a refrigeration or HVAC control panel in front of you that needs programming, troubleshooting, or an electrical connection check. The Eliwell SB655 C is a classic, highly reliable digital temperature controller widely used in commercial refrigeration, cold rooms, industrial freezers, and HVAC systems. However, without the manual, navigating its parameters and terminal blocks can be daunting.
If the SB655 C is beeping or flashing, here is what the manual says:
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: Manages Scroll, Semi-Hermetic, or Screw compressors across up to 4 power steps. It balances running hours even across components with disparate, asymmetrical power capacities. eliwell sb655 c manual
3-digit LED display with automatic minus sign and decimal point Resolution: 0.1°C or 1°C (selectable via parameters)
Do you know if your unit is running ? Share public link
Press and release the key. The current setpoint value will flash. If you are searching for the , you
Before installing or replacing an Eliwell SB655 C unit, verify that the electrical specifications of your system match the controller's limitations. 230Vac , 50/60Hz (Alternative 12Vac/dc models exist) Power Consumption: 3 VA maximum Display: 3-digit LED with sign (minus) and status icons Inputs: Up to 2 NTC or PTC probes (thermostat and defrost) Digital Inputs: 1 configurable voltage-free contact Relay Outputs: Compressor: SPST 8A or 16A (depending on sub-model variant) Defrost: SPDT 8A Evaporator Fans: SPST 8A Front Protection: IP65 water and dust resistance Dimensions: Front panel 74x32 mm, depth 60 mm Mounting: Panel cutout of 71x29 mm with click-in brackets Wiring Diagram and Electrical Installation
If you’ve lost the paper manual or just need a quick refresher on how to change a setpoint, this guide covers the essentials for the
: For advanced parameter settings, alarm logs, and wiring diagrams, refer to the SB-655 Electronic Controllers Guide Key Specifications Power Supply If the SB655 C is beeping or flashing,
The Eliwell SB655 C categorizes parameters into two levels: the (frequently changed settings) and the Installer Menu (deep configuration, password-protected). Accessing the Installer Menu
Here is a table of the most critical parameters. Set these correctly to avoid compressor short-cycling or product loss.
: Most Eliwell controllers use a default installer password of 15 (labeled PA2 ) to unlock full parameter settings.