The air sensor is shorted, disconnected, or broken. Check the wiring at the back of the controller or replace the NTC/PTC probe.
Eliwell Energy SB655/C is a specialized electronic controller designed for centralized air-conditioning units and chillers. It typically features a standard 32x74mm format for easy installation and is part of the Energy Flex product family. Frigo Soğutma Core Functionality Compressor Management : Controls up to of power for scroll, semi-hermetic, or screw compressors. Operating Modes
If you need to change the defrost interval or differential, you cannot do it from the simple Setpoint view. You must enter Programming Mode:
Typically 230Vac or 12Vdc/ac (verify your specific model sticker).
| Parameter | Description | | :--- | :--- | | | Temperature Setpoint : The target temperature to be maintained. | | diF | Differential : The difference in temperature between the compressor stopping (at SEt) and restarting (at SEt + diF). For example, if SEt = 5°C and diF = 2°C, the compressor will stop at 5°C and restart at 7°C. Note: the value 0 cannot be assumed. | | HSE | Higher Set : The maximum permissible setpoint value (to prevent user errors). | | LSE | Lower Set : The minimum permissible setpoint value. | | HC | Operating Mode : Configures the main output to operate in C (Cool/Cold) or H (Heat/Hot) mode. | | OSP | Offset Set Point : A temperature value added to the setpoint when an "Economy" function is enabled. | | OdO | Door Open Activation Delay : The delay time before the digital input (door switch) triggers an action (e.g., switching off loads). | | Ont / OFt | Compressor ON/OFF Time : Used for safety in the event of a faulty sensor probe. Ont is the ON time in a duty cycle; OFt is the OFF time. | | H00 | Probe Type Configuration : Sets the type of sensor connected. 0 = PTC; 1 = NTC. |
The Eliwell SB655 C alerts operators to system anomalies by flashing specific error codes on the LED screen and sounding an internal buzzer. Error Codes Table Error Code Meaning / Cause Corrective Action Room Temperature Probe (Pb1) failure or open circuit
The manual details how the controller handles different power steps and compressor types (Scroll, Semi-Hermetic). Optimization of 4 steps of power output.
Supports Modbus and Televis systems for remote monitoring. Key Sections of the Eliwell SB655 C Manual
Controls the electric heating elements or hot gas solenoid valves.
: While viewing a value, use UP/DOWN to adjust it and SET to confirm.
