Press the Power Button to return to normal operation. 2. Common Alarm & Error Codes
The SB655 C is part of Eliwell’s Free Way and Smart family. Key features usually include:
: Features automatic summer-winter changeover based on outdoor conditions. Advanced Control
: Features automatic summer-winter changeover and heat pump deactivation at very low temperatures. Energy Efficiency
Press and release the button. The current setpoint value flashes. eliwell sb655 c manual
| Terminal | Label | Function | |----------|-------|----------| | 1-2 | Power | 230Vac supply (L, N) | | 3-4 | Probe | PTC/NTC temperature probe | | 5-6 | Digital input | Door switch or generic alarm | | 7-8 | Defrost | Defrost relay (NO) | | 9-10 | Compressor | Compressor relay (NO) |
To silence an alarm, press any button (depending on configuration).
Press , use arrows to enter the factory default password ( 95 ), and press [SET] . You can now browse the complete configuration menu. Critical Parameter Configuration Table Parameter Function Default Value Recommended Range diF Temperature Compressor Differential (Hysteresis) 1.0°C to 4.0°C HSE Maximum limit settable for Setpoint Match maximum appliance limits LSE Minimum limit settable for Setpoint Match minimum appliance limits dit Interval time between two defrost cycles 4 to 8 hours dEt Maximum duration time for a defrost cycle 20 to 45 minutes dSt Defrost termination temperature (via Probe 2) 4.0°C to 12.0°C FSt Fan stop temperature threshold -2.0°C to 8.0°C FAt Evaporator fan activity delay after defrost 1 to 5 minutes OdO Delay time for outputs upon machine power-up 1 to 3 minutes for safety Defrost Modes and Fan Management
The is a base electronic controller typically used in centralized air-conditioning units. This guide provides a summary of essential operations, programming steps, and common alarm codes based on official documentation from Eliwell . 1. Programming & Navigation Press the Power Button to return to normal operation
Are you seeing a on your display that wasn't covered here?
The defrost sensor is broken. Defrost cycles will terminate purely on time ( dEt ) rather than temperature.
Eliwell SB655 C Manual: Comprehensive Programming and Troubleshooting Guide
The SB655C is a microprocessor-driven controller intended to manage up to two refrigerant circuits. Its primary role is to govern the operation of compressors, pumps, and fans to precisely regulate water or air temperature. It can handle a range of system complexities, from chillers and heat pumps to condensing units. Key to its design is versatility, made possible by a configurable number of analog and digital inputs and outputs that can be adapted to specific system needs. The current setpoint value flashes
The SB655C is operated via a that offer clear and intuitive navigation, even from a distance.
High-temperature alarm. The unit is warmer than the set threshold. AL1: Low-temperature alarm. 6. Installation Best Practices
If you want to know what temperature the unit is currently set to maintain: