Support for NTC or PTC probes (temperature sensors).

The SB655C features an alarm system to protect the product. The manual provides a detailed list of codes, but here are the most common ones:

The is a high-performance, microprocessor-based controller widely used in commercial refrigeration and HVAC systems. Known for its reliability and precision, this "Switching" series controller is designed to manage temperature-controlled units with efficiency.

If you want to know what temperature the unit is currently set to maintain:

: A "Copy Card" can be used to quickly upload or download parameter maps between multiple controllers of the same model. Common Alarms : AL1 : Low-temperature alarm on probe 1. E1/E2 : Probe errors (shorted or interrupted). Opd : Open door alarm triggered by a digital input.

If you have landed on this page searching for the , you are likely facing one of three scenarios: you are installing a new unit, you need to reprogram an existing controller after a power surge, or your refrigeration unit is displaying an error code and beeping incessantly.

The SB655C is part of Eliwell’s "Speedy" series. It is designed to drive a hermetic or semi-hermetic compressor (relay output) and manage defrost cycles (hot gas or electric). It typically features: