: Includes automatic summer-winter changeover and "Free Cooling/Heating" logic to optimize energy based on outdoor conditions. User Interface & Navigation
Electronic controllers for centralised air-conditioning units
Cause: The cabinet temperature has exceeded SEt + HAL for longer than the tAO time delay.
Fully compatible with Modbus and Televis protocols for remote monitoring. How to Access the Programming Menu eliwell sb655 c manual
To modify advanced system logic, press the SET button for more than 5 seconds . If prompted for a password ( PA2 ), the default security code is often 22 .
| Terminal | Function | Typical Connection | | :--- | :--- | :--- | | 1 | Probe 1 (PTC/NTC) – Common | Brown wire of NTC probe | | 2 | Probe 1 (PTC/NTC) – Input | Blue wire of NTC probe | | 3 | Probe 2 (Evaporator) – Input | Second probe wire | | 4 | Probe 2 Common (linked to terminal 1) | Link wire to terminal 1 | | 5 | Digital Input (Door switch) | Door switch (NO/NC) | | 6 | Alarm Relay (NO) | External buzzer/light | | 7 | Alarm Relay (Common) | Neutral for alarm | | 8 | Compressor Relay (NO) | Compressor contactor coil | | 9 | Compressor Relay (Common) | Main power neutral (to compressor) | | 10 | Defrost Relay (NO) | Heater or solenoid valve | | 11 | Defrost Relay (Common) | Neutral for defrost | | 12 | Power Supply (Neutral) | Mains Neutral (N) | | 13 | Power Supply (Live) | Mains Live (L) |
The Eliwell SB655 C is suitable for a wide range of industrial applications, including: How to Access the Programming Menu To modify
At the hospital that night, the cooler’s display blinked 3.9°C—safe enough, but an alarm history showed a cluster of brief excursions to 7°C between 2 and 3 a.m. The compressor cycles were unusually short. Marco traced the sensor cable: the insulation was brittle where it bent behind a panel. A hairline break caused intermittent contact when vibration from the nearby corridor trolley resonated through the rack. The controller, following its settings, treated each brief loss of accurate temperature input as a rapid warm-up and repeatedly started the compressor, then stopped it again—short cycles that stressed the system and allowed real temperature drift between readings.
To help you configure the controller precisely for your specific setup, please provide a few additional details:
: Comprehensive Guide to Installation, Programming, and Troubleshooting The Eliwell SB655 C Go to product viewer dialog for this item. The compressor cycles were unusually short
: Supports automatic summer-winter changeover and dedicated modes like Communication : Compatible with protocols for integration into BMS networks. Advanced Control
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This comprehensive article serves as an extended manual. We will cover everything from hardware overviews and wiring, to programming parameters, common error codes, and where to find the official PDF manual.
The SB655 C features a high-visibility LED display paired with an intuitive key matrix for rapid programming. Keypad Functionality