Eliwell SB655/C is a universal electronic controller within the Energy Flex
This article provides a "manual repack"—a synthesized, organized, and enhanced overview of the key operational procedures, parameters, and troubleshooting techniques derived from technical manuals and expert documentation for the Eliwell SB655/C 1. Overview of the Eliwell SB655/C Controller
: 6 relays, 2 PWM outputs, and 2 analogue 0-10V outputs .
The Eliwell SB655 C is engineered for precise temperature regulation and defrost management. Understanding its electrical and physical limits prevents installation failures. Power and Housing 230Vac ±10%, 50/60Hz (Standard model) Housing: Self-extinguishing plastic, panel mounting Dimensions: Front 74x32 mm, depth 60 mm Display: 3-digit display with sign (minus) and status icons Inputs and Outputs eliwell sb655 c manual repack
Configures what is shown on the screen (e.g., setpoint, sensor value). 4. Maintenance and Troubleshooting
A quality transforms the controller into an intuitive tool. You get:
: Includes automatic summer-winter changeover and "Free Cooling/Free Heating" logic to optimize energy based on outdoor conditions. Maintenance Eliwell SB655/C is a universal electronic controller within
: High-pressure alarm (check condenser fans or cleanliness). LA : Low-pressure alarm (check refrigerant levels). dA : Digital input alarm (usually a tripped safety switch). 💾 Maintenance and "Repack" Tips
Fix: Check for sticking compressor relay contacts keeping the cooling circuit permanently active.
+-------------------------------------------------------------+ | ELIWELL ENERGYFLEX SB655/C | +-------------------------------------------------------------+ | 1 | 2 | 3 | | 6 | 7 | | 8 | 9 | 10 | | TTL | +-----------+ +-------+ +------------+ +-----+ Analog In Power Supply Digital In Copy Card (NTC/0-10V) (12-24V AC) (Alarms/Switches) Essential Electrical Guidelines or OEM engineers
For technicians, facility managers, or OEM engineers, managing the configuration of these controllers—specifically in scenarios involving maintenance, replacement, or cloning of units—is critical. This guide covers the process, configuration, and key documentation. 1. What is the Eliwell SB655 C?
Look for signs of pitting or carbon buildup near the output relay paths.
Press and release the key. The current Setpoint value flashes on the screen.
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