| Error Code | Meaning | Solution | | :--- | :--- | :--- | | | Probe 1 (Ambient) shorted or open circuit. | Check wiring on terminals 1 & 2. Replace probe (10k NTC). | | P2 | Probe 2 (Evaporator) fault. | Check wiring on terminals 3 & 4. Jumper between 1 & 4 present? | | HA | High temperature alarm (exceeded AL2). | Check if door is open, condenser is dirty, or gas is low. | | LA | Low temperature alarm (below AL1). | Check if setpoint is too low or if probe is unplugged in warm air. | | EE | Internal memory failure. | Controller is faulty. Replace SB655 C unit. | | cEF | Defrost timeout – evaporator did not end defrost. | Defrost duration (c5) too short, or heater is burnt out. | | dor | Door open alarm (if digital input enabled). | Close the door or check door switch terminals 5-7. |
Whether you are extending a defrost cycle to prevent ice buildup or narrowing the differential for tighter temperature control, the SB655C offers the flexibility required for modern refrigeration needs. Keep a copy of the parameter map handy—it is the key to unlocking the unit's full potential.
Here’s an of the Eliwell SB655 C Manual , focusing on its usefulness, content, and practical value for users of the Eliwell SB655 C temperature controller. eliwell sb655 c manual
Use an Eliwell multi-function key (mFK) to download and save parameter maps before making major changes.
Search for the exact string "SB655C_GB.PDF" – this is the original English manual file name used by Eliwell. | Error Code | Meaning | Solution |
Includes a TTL serial port on the left side for connection to programming keys or monitoring systems. 4. Maintenance Tips
: Features automatic summer-winter changeover and supports "Free Cooling" and "Free Heating" modes to optimize energy efficiency. Technical Specifications Inputs/Outputs : | | P2 | Probe 2 (Evaporator) fault
Typically equipped with 5 digital outputs (relays) and 5 analog outputs , alongside 5 sensor inputs and 6 digital inputs . Power Supply: Operates on 12-24V~ or 12-24V~/24Vc .
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The Eliwell SB655 C alerts operators to system anomalies by flashing specific error codes on the LED screen and sounding an internal buzzer. Error Codes Table Error Code Meaning / Cause Corrective Action Room Temperature Probe (Pb1) failure or open circuit