Gree · Split air conditioners · Gree Pular (wall-mounted split, R32)
E1High pressure protection of system
Name in the manufacturer's documentation (service manual): High pressure protection of system
[1]
In plain words (editorial)
High-pressure protection of the system. The service manual lists a very dirty or blocked outdoor heat exchanger, too high ambient temperature, a loose or damaged high-pressure switch, a blocked internal system or a damaged outdoor main board.
When to call a service technician: Keep the outdoor unit clear; if the code returns, call a service technician.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- Heat exchange of outdoor unit is too dirty, or it blocked the air inlet/outlet[2]
- Ambient temperature is too high[3]
- Wiring of high pressure switch is loose or high pressure switch is damaged[4]
- The internal system is blocked (dirt blockage, ice blockage, oil blockage, angle valve is not completely opened)[5]
- Main board of outdoor unit is damaged[6]
- Refrigerant is too much[7]
What the device does (source text)
- Cool/Dry: all loads stop operation except indoor fan; Heat: all loads stop operation.[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] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor checked manually
High pressure protection of
- [2] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor quote verified
Heat exchange of outdoor unit is too dirty
- [3] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor quote verified
Ambient temperature is too high
- [4] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor quote verified
Wiring of high pressure switch is loose
- [5] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor quote verified
The internal system is blocked; (dirt blockage, ice blockage,
- [6] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor quote verified
Main board of outdoor unit is damaged;
- [7] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor quote verified
Refrigerant is too much.
- [8] Gree Electric Appliances – Service Manual, wall-mounted R32 GWH..AG.. (Pular) and related (copy from distributor Gree Climat, Ukraine) , p. 100 manufacturer document – copy from a distributor quote verified
Cool/Dry: all loads stops operation