Panasonic · Heat pumps · Panasonic Aquarea Bi-bloc (split), generation L (R290)
H27Service valve error
Name in the manufacturer's documentation (service manual): Service valve error
[1]
This page only quotes the original English documentation. A plain-language explanation has not been written yet, so the page is not indexed by search engines.
For technicians
Detection conditions (source text)
- During cooling operation, when:- [a] Indoor refrigerant pipe temperature at compressor startup - present indoor refrigerant pipe temperature < 2°C [b] Present high pressure - high pressure at compressor startup < 5kg/cm2 **Judgment only for first time cooling operation and not during pump down operation.[2]
- Continue for 5 minutes.[3]
Possible causes (source text)
Safety notes from the documentation
- Always switch off the power before remove and connect the component.[8]
⚠ 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.
- [1] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 189 manufacturer document – copy from a distributor quote verified
H27 Service valve error
- [2] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 197 manufacturer document – copy from a distributor quote verified
During cooling operation, when:- [a] Indoor refrigerant pipe temperature at compressor startup - present indoor refrigerant pipe temperature < 2°C [b] Present high pressure - high pressure at compressor startup < 5kg/cm2…
- [3] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 197 manufacturer document – copy from a distributor quote verified
Continue for 5 minutes.
- [4] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 197 manufacturer document – copy from a distributor quote verified
3 way valves closed.
- [5] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 197 manufacturer document – copy from a distributor quote verified
Faulty high pressure sensor.
- [6] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 197 manufacturer document – copy from a distributor quote verified
Faulty indoor refrigerant pipe temperature sensor
- [7] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 197 manufacturer document – copy from a distributor quote verified
Faulty outdoor unit PCB (main).
- [8] Service Manual – WH-SDC0509L3E5 / L6E5 + WH-WDG05/07/09LE5 (R290) (PAPAMY2307068CE) , p. 197 manufacturer document – copy from a distributor quote verified
always switch off the power before remove and connect the component.