In brief
Fault code P2 on Gree sapphire service manual 18mbh and 24mbh models a means: Fault code P2 (No.25) indicates a compressor maximum frequency issue detected during a test state. This fault appears exclusively during maximum cooling or heating tests. Most common cause: The service manuals do not specify any possible cause for this code. It is an indicator related to the compressor test state. First action: Confirm the unit is in maximum cooling or heating test mode.. Call a registered engineer if the fault returns after basic checks or involves refrigerant work (F-Gas registered engineer required).
According to Gree service manuals, fault code P2 (No.25) is a test status indicator that appears only during maximum cooling or heating test cycles, with no functional fault cause specified.
P2 • Gree • sapphire service manual 18mbh and 24mbh models a
Gree fault code P2: causes, diagnosis and solution
Fault code P2 (No.25) indicates a compressor maximum frequency issue detected during a test state. This fault appears exclusively during maximum cooling or heating tests.
Source: Gree documentation (service manual – per product reference)
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What does fault code P2 on Gree mean?
Fault code P2 (No.25) indicates a compressor maximum frequency issue detected during a test state. This fault appears exclusively during maximum cooling or heating tests.
The service manuals do not specify any possible cause for this code. It is an indicator related to the compressor test state.
Symptômes
- Display of code P2 on the screen (Dual-8 Code).
- Flashing indicator (ON 0.25s and OFF 0.25s or ON 0.5s and OFF 0.5s depending on model).
- Display only during maximum cooling test.
- Display only during maximum heating test.
- Display on indoor and/or outdoor unit.
Diagnostic
1. Check test mode
- Confirm the unit is in maximum cooling or heating test mode.
- Observe the indicator flashing (ON/OFF duration per specific manual).
2. Check compressor status
- Verify if the compressor operates normally outside the test state.
- Confirm absence of specified causes in manuals for this specific code.
How to reset fault code P2 on Gree?
Code P2 is a test status indicator, not a standard functional fault. No repair procedure is provided in the excerpts. It is recommended to check that the system is not stuck in an abnormal test mode or consult the specific model manual for test exit procedures.
When should you call an F-Gas engineer?
This code does not appear during a standard air conditioning malfunction in normal service. It is reserved for performance test phases (maximum cooling/heating). In the field, its appearance often indicates that the test mode has not been properly cancelled or that the system is still in a test state.
Affected models
- Sapphire 18MBH and 24MBH
- Livo Plus 30k/36k 230V
- Livo Gen4 30MBH and 36MBH
- Vireo Plus Ultra 30MBH and 36MBH
- All Match Floor Ceiling R32 9k and 24k
- High Static Slim Duct
Field context
This code does not appear during a standard air conditioning malfunction in normal service. It is reserved for performance test phases (maximum cooling/heating). In the field, its appearance often indicates that the test mode has not been properly cancelled or that the system is still in a test state.
Technical source data
The Gree fault code P2 (No.25) specifically signals that the compressor maximum frequency has been reached, detected exclusively during a test state, not during normal operation. This fault appears only during maximum cooling or heating test cycles (Excerpt 1, Excerpt 2, Excerpt 3, Excerpt 4, Excerpt 5, Excerpt 6, Excerpt 7, Excerpt 8). The service manuals explicitly state that no functional fault cause is associated with this code; it is a test status indicator. The display method varies by model: static display on some Dual-8 units (Excerpt 2, Excerpt 8) or flashing at 0.5s (Excerpt 2) or 0.25s (Excerpt 3, Excerpt 7) on the operation and cooling indicators (Excerpt 7). No repair procedure is provided, suggesting the system may be stuck in a test mode.
Sources: high static slim duct service manual b — high-static-slim-duct-service-manual-b.pdf (p. 34) · universal floor ceiling service manual b — universal-floor-ceiling-service-manual-b.pdf (p. 30) · livo plus service manual 30k 36k 230v b — livo-plus-service-manual-30k-36k-230v-b.pdf (p. 35)
Questions fréquentes
Does code P2 indicate a compressor fault?
No. According to the service manuals, code P2 (No.25) means the compressor maximum frequency has been reached during a test state. It is a test status indicator displayed only during maximum cooling or heating tests. No functional fault cause is specified, and no repair procedure is provided. The system is likely in a test mode.
How is code P2 displayed on Gree units?
The display depends on the model. Some models use a static display on the Dual-8 code (Excerpt 2, Excerpt 8). Others show code P2 flashing on the operation and cooling indicators with a duration of 0.25s ON and 0.25s OFF (Excerpt 3, Excerpt 7). One model also mentions a flash of 0.5s ON and 0.5s OFF (Excerpt 2). The display occurs exclusively during test states.
What is the procedure to resolve code P2?
The manual excerpts provide no repair procedure because the code does not indicate a hardware failure. The technical recommendation is to check if the system is stuck in an abnormal test mode. It is advised to consult the specific model manual for test exit procedures or reset the diagnostic mode if possible.
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