If you have a version lower than 2.0, consider replacing the controller, as the fan logic is inferior.
: It supports multiple configurations including air-to-air, air-to-water, and water-to-water heat pumps with gas or water inversion. Advanced Control
| Error Code | Meaning | Best Fix (From the Manual) | | :--- | :--- | :--- | | | Internal memory failure | Controller is fried. Replace it. No manual can fix hardware. | | P1 | Room probe faulty or shorted | Check probe wires at pins 4 & 5. Replace NTC probe. | | P2 | Evaporator probe faulty | Check probe wires at pins 7 & 8. Parameter P2P likely set to y (yes). | | HA | High Temperature Alarm | Door left open? Condenser dirty? Check ALu parameter. | | LA | Low Temperature Alarm | Too much cold air. Check ALL parameter. | | dA | Defrost Alarm | Defrost took longer than tdF . Evaporator iced up? | | EA | External alarm | A digital input (door switch) is triggered. | eliwell sb655 c manual best
If prompted for PA2 , the default service level code is often 22 .
If your independent thermometer shows a different reading than the Eliwell, use the CA1 parameter to apply an offset to the probe. If you have a version lower than 2
Available as a PDF from the Eliwell product page , covering the EnergyFlex SB 655CS
28 Mar 2007 — Electronic controllers for centralised air-conditioning units. Installation & User Manual. Visible only in models SB655/C/S SD655/ Frigo Soğutma Replace it
Mastering the Eliwell SB655/C: The Ultimate Manual & Configuration Guide
