High-temperature alarm. Check the condenser for dust or door seals for leaks. AL1: Low-temperature alarm. 6. Pro Tips for Peak Performance

| Parameter | Value | |-----------|-------| | Power supply | 230 Vac ±10%, 50/60 Hz | | Relay outputs | Compressor (8A resistive), Defrost (8A), Fan (5A) optional | | Sensor input | 1 or 2 NTC/PTC probes (default NTC 10kΩ) | | Display range | -50 to +150 °C | | Resolution | 0.1 °C | | Protection class | IP65 (front panel) | | Ambient temp | -5 to +55 °C |

Configures whether the system uses electrical heaters (El) or hot gas injection (in) for defrosting.

Understanding your hardware configuration prevents physical damage and ensures peak control precision. The SB655 architecture relies on specific terminal limits: 12–24V~ (AC/DC) standard input voltage.

If you are configuring multiple units, use the Eliwell "Copy Card" to upload parameters from one SB655/C and download them into the others in seconds.

The cabinet is too cold, risking product freezing. Check for a stuck compressor relay or an incorrectly set differential. Maintenance and Lifespan Extension

It is typically identified by its model number, e.g., SB650235W2400, and is designed for panel mounting, requiring a cutout of 71 mm x 29 mm. The front panel carries an IP65 protection rating, making it resistant to dust and water jets, a critical feature for industrial environments.

Sets the maximum safety duration for a defrost cycle if the evaporator probe fails to terminate it early.

The stands as one of the most reliable parametric HVAC controllers for managing complex centralized air-conditioning units, chillers, and heat pumps. This comprehensive manual guide breaks down installation, parameter configuration, and troubleshooting to help you get the best performance out of your Eliwell Energy Flex System . Technical Overview and Key Features The Eliwell SB655/C