Daikin · Split air conditioners · Daikin Sensira FTXF-E / ATXF-E (wall-mounted split, R32)
E8Input power overcurrent
Name in the manufacturer's documentation (user manual): Input power overcurrent
[1]
In plain words (editorial)
Input power overcurrent: the compressor running current exceeded the standard value. The service manual first asks to check whether the outdoor temperature is outside the operating range.
When to call a service technician: The checks listed by the service manual need the unit opened – call a service technician.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Detection conditions (source text)
- Compressor running current exceeds standard value for 2.5 seconds[2]
Possible causes (source text)
Steps given by the manufacturer (source text)
⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.
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] Daikin – User reference guide FTXF20~42E5V1B + ATXF20~42E5V1B, 4D526466-14K (2022.09) (4DEN526466-14K) , p. 37 official manufacturer document checked manually
Input power overcurrent
- [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. 14 ⚠ unofficial source quote verified
compressor running current exceeds standard value for 2.5 seconds.
- [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. 14 ⚠ unofficial source quote verified
outdoor temperature is out of operation range.
- [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. 15 ⚠ unofficial source quote verified
faulty compressor or miswiring of the compressor power supply cable.
- [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. 14 ⚠ unofficial source quote verified
faulty main pcb.
- [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. 15 ⚠ unofficial source quote verified
▪ faulty or disturbance of the power supply (imbalance >4%), ▪ power drop, ▪ short circuit.
- [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. 14 ⚠ unofficial source quote verified
check the outdoor temperature.
- [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. 14 ⚠ unofficial source quote verified
perform a check of the compressor.
- [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. 14 ⚠ unofficial source quote verified
perform a check of the main pcb.
- [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. 15 ⚠ unofficial source quote verified
check if the power supply is conform with the regulations.