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Daikin · Split air conditioners · Daikin Sensira FTXF-E / ATXF-E (wall-mounted split, R32)

E6Compressor lock

Name in the manufacturer's documentation (user manual): Compressor lock[1]

In plain words (editorial)

Compressor lock: the compressor rotor does not turn although the compressor is energised. Causes in the service manual include a closed stop valve, a clogged refrigerant circuit or a wrong refrigerant charge.

When to call a service technician: Refrigerant circuit checks need a technician with F-gas certification.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →

Sources

Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.

⚠ Some information comes from unofficial sources (copies shared by users, transcriptions, forums). They are marked below. Check them against the manufacturer's documentation before working on the device.

  1. [1] Daikin – User reference guide FTXF20~42E5V1B + ATXF20~42E5V1B, 4D526466-14K (2022.09) (4DEN526466-14K) , p. 37 official manufacturer document checked manually Compressor lock
  2. [2] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified the motor rotor does not rotate when the compressor is energized.
  3. [3] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified faulty discharge pipe thermistor or connector fault.
  4. [4] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified closed stop valve in the refrigerant circuit.
  5. [5] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified clogged refrigerant circuit.
  6. [6] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified refrigerant overcharge or shortage.
  7. [7] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified non‑condensables and/or humidity in the refrigerant circuit.
  8. [8] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified faulty compressor or miswiring of the compressor power supply cable.
  9. [9] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified faulty main pcb.
  10. [10] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified faulty 4‑way valve.
  11. [11] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 14 ⚠ unofficial source quote verified faulty expansion valve.
  12. [12] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified perform a check of the discharge pipe thermistor.
  13. [13] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified check that all stop valves of the refrigerant circuit are open.
  14. [14] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified check if the refrigerant circuit is clogged.
  15. [15] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified check if the refrigerant circuit is correctly charged.
  16. [16] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified check for the presence of non‑condensables and/or humidity in the refrigerant circuit.
  17. [17] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified perform a check of the compressor.
  18. [18] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified perform a check of the main pcb.
  19. [19] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified perform a check of the 4‑way valve.
  20. [20] Daikin – Service manual Split Sensira R32 FTXF20~71A + FTXF20~25B + FTXF20~42C (+ ATXF/RXF/ARXF), ESIE18-12E – 2021.02 – text capture of pp. 2–36 from easymanua.ls (ESIE18-12E) , p. 13 ⚠ unofficial source quote verified perform a check of the expansion valve.