Ideal Logic Air fault 9.1.12
BSB short circuit fault
Heat pumpWhat it means
A short circuit has been detected on the BSB (Boiler System Bus) communication line, potentially involving diagnostics unit, smart interface, or user interface wiring.
Likely causes
- Short in wiring from diagnostics connection to diagnostics unit
- Short in wiring from smart interface connection to smart interface
- Short in wiring from RVS21 to user interface
Where to start
- Check for shorts in wiring from diagnostics connection to diagnostics unit
- Check for shorts in wiring from smart interface connection to smart interface
- Check for shorts in wiring from RVS21 to user interface
The full answer, free
- 1 more check in order
- The readings and component tests from the manual
- How to put it right, step by step
- The manual page for this fault (page 73), right under the answer
Safety: Isolate the outdoor unit and any backup heater, and give the inverter capacitors time to discharge before you open the electrics. Anything on the refrigerant circuit needs F-gas certification.
From the Ideal manual for the Logic Air. Check the model on the data plate before you order parts.
Other Ideal Logic Air fault codes
- 134Re-occurring heat pump fault
- 366Room temp sensor fault
- 370-F15Heat pump air flow fault
- 370-F24Circulation pump error
- 370-F27No water flow fault
- 370-F3Heat pump inverter fault
- 370-F4Outdoor electrical filtering fault
- 370-F9Heat pump defrost thermistor fault
- 7No heat pump starts exceeded
- 9.1.16Source temperature too low fault
- 9.1.24Low mains voltage fault
- 9.1.26No outdoor connection fault
- 9.1.28Number of heat pump starts exceeded
- 9.1.29No central heating but hot water works OK