Gree AC error codes: meaning, diagnosis and PCB parts
Gree is a leading air conditioner manufacturer and also builds units for many OEM brands across Asia, including Indonesia. When a Gree AC displays an error code or blinking indicator, it points to a specific fault. This guide explains the most common Gree codes, their likely causes and the parts commonly involved, including the electronic control board.
How to read the error code
The code shows on the indoor display or as LED blinks. Reading it correctly is the first diagnostic step.
- Note the exact code or count the LED blinks
- Tell an indoor fault from an outdoor (ODU) fault
- Note when it appears (at start, in cooling, after a few minutes)
- One code can have several causes: measurement confirms the diagnosis
Most common codes
Typical Gree codes include E1, E2, E3, E4, E5, E6, H3 and H5. They map to the main functions the board monitors.
Always check connectors and terminal tightness before replacing a part: a loose contact triggers misleading codes.
- E1: high pressure protection (condenser, fan or overcharge)
- E2: indoor coil anti-freeze protection
- E3: low pressure protection (leak or undercharge)
- E4: compressor discharge high temperature
- E5 / H3: overcurrent, low voltage or compressor overload
- E6: indoor-outdoor communication fault
- H5: IPM power module protection on the outdoor board
When the control board (PCB) is the cause
Some persistent faults point straight to the main or power board rather than a sensor.
- Communication error after cables checked: indoor or outdoor board
- No response despite power present: main board suspect
- Recurring inverter fault: power module (IPM) or outdoor board
- Burnt smell or scorched component: board replacement needed
Finding the right part
Replacement needs the exact reference of the faulty part to avoid ordering mistakes.
- Read the reference printed on the board or component
- Note the full model and serial number
- Tell sensor, fan, capacitor and board apart to avoid over-ordering
- Prefer a tested refurbished board when new is unavailable
En résumé
A Gree error code is not a dead end: decoded well, it points to a pressure protection, a sensor, communication or the control board. When the board is at fault, identifying it by its exact reference avoids ordering mistakes. CLIMAPARTS supplies new and refurbished, tested AC control boards and ships internationally, including Indonesia.
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