Gree AC Error Codes: What They Mean & What to Do

Gree uses a letter-plus-digit code system where the letter identifies the type of event: E codes are system protections, F codes are sensor faults and frequency limits, H codes are compressor and power-module protections, and P, U and L codes are reported by the outdoor inverter drive board. Gree is also the OEM behind several other names sold in the UAE, so the same code layout often appears on rebadged units — but only the Gree table should be read against a Gree brand plate.

Product families covered

• Residential split / multi-split

  E, F, H and C codes shown on the indoor display or remote.

• Ducted

  Shares the indoor-displayed code set.

• Outdoor inverter drive board

  P, U, L, HC, EU and oE codes reported by the drive board — a separate family from the indoor codes.

Where the code is displayed — and why it matters

The same fault can be labelled differently depending on which display you read it from, so identify the display before looking the code up.

Indoor unit display

Wall-mounted splits flash the code on the front panel display.

Wireless remote / handset

Some models mirror the active code on the handset screen.

Outdoor inverter drive board

P / U / L / oE drive codes are read on the outdoor board, not the room display.

Gree code letter families

The letter narrows the fault before you know the exact code:

E

System protections — pressure, communication, over-current, water level

F

Sensor faults and protective frequency limiting

H

Compressor, power-module and system protections (H1 = defrost status)

C

PCB configuration (jumper cap)

L

Startup, fan-motor and compressor-phase faults

P

Drive-board voltage, current and IPM faults

U

Compressor phase / rotation and AC detection faults

How the families differ

• Indoor-displayed E, F and H codes describe what the system protected itself against; the P, U and L drive codes describe why the inverter board stopped driving the compressor.
• A frequency-limit code (F6, F8, F9, FA, H0) is not a hard fault — the unit is deliberately reducing output to stay inside a limit, which in Dubai summer often means the condenser cannot reject heat fast enough.
• Gree U4 has nothing to do with Daikin U4. Codes are only ever read against the manufacturer on the brand plate.

Gree indoor-displayed codes (split, multi-split, ducted)

Codes read from the indoor display or handset. Severity follows the source research: protections marked high stop the system to prevent damage, moderate codes usually allow limited running, and status codes such as H1 are not faults at all.

Gree outdoor inverter drive board codes

Reported by the outdoor drive board. These are electrical and inverter-level faults — the outdoor unit's power side must be isolated by a technician before any inspection.

Full guides for high-demand Gree codes

Codes without their own guide are answered in the table above. We only give a code its own page when there is genuinely more to say than a table row can hold.

Before you act on a code

• Several drive-board codes (P, U, L series) come from a single technical compilation in our research pass rather than an official Gree service manual — verify against your model's documentation before parts are replaced.
• Do not clear a high-severity protection code by repeatedly switching the unit off and on. E1, E3, E4, E5, H3, H4, H5 and H7 all indicate the system stopped to protect itself.
• Gree-built units are sold under other brand names in the UAE. Read the code against the brand on the plate, not the brand on the invoice.

B Corroborated across independent technical sources

How to identify your system

1. Note the exact code and whether it appeared on the indoor display, the handset, or the outdoor drive board.
2. Photograph the indoor unit's model label — the label settles which code family applies.
3. Note whether the unit stops completely, or keeps running weakly (a frequency-limit code rather than a protection trip).

No code showing? Start from the symptom

• AC not cooling
• AC breaker keeps tripping