Haier Aircon 30 Error Code
Use this Haier 30 error code guide to confirm the source table meaning, capture the reporting equipment and model, and match the service manual before diagnosis. Match the model first; same-looking codes can point to different rows.
What does Haier 30 mean?
Haier 30 is listed as high-pressure switch HPS failure, compressor wiring is not detected, and high-pressure switch HPS1 failure in MRV-S MVHP outdoor unit, FlexFit Pro large cassette, MRV5 AV08-AV26IMVEVA - outdoor failure table, and 2024 3U / 4U / 5U S2 multi-split outdoor units source rows. The loaded row is source-backed by official diagnostic material. Do not collapse this code across model families; use the model, series, or system type to choose the right row. Confirm the exact model, series, or signal row before accepting a parts quote.
Choose the matching source row
The same visible code has more than one source-backed meaning. Match the model family, system type, or reporting unit before approving parts.
| Code | What it means | What to check first |
|---|---|---|
| MRV-S MVHP outdoor unit | High-pressure switch HPS failure | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| FlexFit Pro large cassette | Compressor wiring is not detected | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| MRV5 AV08-AV26IMVEVA - outdoor failure table — High-pressure switch HPS1 failure | High-pressure switch HPS1 failure | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| MRV5 AV08-AV26IMVEVA - outdoor failure table — High-pressure switch HPS2 failure | High-pressure switch HPS2 failure | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| 2024 3U / 4U / 5U S2 multi-split outdoor units | Indoor unit C liquid-pipe temperature sensor failure | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
- Code
- MRV-S MVHP outdoor unit
- What it means
- High-pressure switch HPS failure
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- FlexFit Pro large cassette
- What it means
- Compressor wiring is not detected
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- MRV5 AV08-AV26IMVEVA - outdoor failure table — High-pressure switch HPS1 failure
- What it means
- High-pressure switch HPS1 failure
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- MRV5 AV08-AV26IMVEVA - outdoor failure table — High-pressure switch HPS2 failure
- What it means
- High-pressure switch HPS2 failure
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- 2024 3U / 4U / 5U S2 multi-split outdoor units
- What it means
- Indoor unit C liquid-pipe temperature sensor failure
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
How this fault may be shown
Match every scope item the source provides—exact model where listed, PCB or panel where listed, and reporting device—before using a displayed value. These manufacturer crosswalks are display evidence, not universal codes or repair instructions.
Multi-Split wired controller YR-E17 / YR-E17ASource-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 16
| Reported by | Shown as |
|---|---|
| Wired controller YR-E17 or YR-E17A | 32 |
- Reported by
- Wired controller YR-E17 or YR-E17A
- Shown as
- 32
Multi-Split wired controller YR-E16 familySource-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 16
| Reported by | Shown as |
|---|---|
| Wired controller YR-E16, YR-E16A, or YR-E16B | 50 |
- Reported by
- Wired controller YR-E16, YR-E16A, or YR-E16B
- Shown as
- 50
Multi-Split cassette air-conditioner displaySource-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 16
| Reported by | Shown as |
|---|---|
| Cassette air-conditioner display | 32 |
- Reported by
- Cassette air-conditioner display
- Shown as
- 32
Multi-Split cassette TIMER LED5 / RUNNING LED1Source-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 16
| Reported by | Shown as |
|---|---|
| Cassette unit TIMER LED5 and RUNNING LED1 | LED5 5 / LED1 0 |
- Reported by
- Cassette unit TIMER LED5 and RUNNING LED1
- Shown as
- LED5 5 / LED1 0
Multi-Split ceiling-floor, cassette, or duct LED4 / LED3Source-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 16
| Reported by | Shown as |
|---|---|
| Ceiling-floor, cassette, or duct unit TIMER LED4 and RUNNING LED3 | LED4 5 / LED3 0 |
- Reported by
- Ceiling-floor, cassette, or duct unit TIMER LED4 and RUNNING LED3
- Shown as
- LED4 5 / LED3 0
Multi-Split wall-unit displaySource-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 16
| Reported by | Shown as |
|---|---|
| Wall-unit display | F17 |
- Reported by
- Wall-unit display
- Shown as
- F17
Multi-Split alternate table wired controller YR-E17 / YR-E17ASource-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 18
| Reported by | Shown as |
|---|---|
| Wired controller YR-E17 or YR-E17A | 32 |
- Reported by
- Wired controller YR-E17 or YR-E17A
- Shown as
- 32
Multi-Split alternate table wired controller YR-E16 familySource-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 18
| Reported by | Shown as |
|---|---|
| Wired controller YR-E16, YR-E16A, or YR-E16B | 50 |
- Reported by
- Wired controller YR-E16, YR-E16A, or YR-E16B
- Shown as
- 50
Multi-Split duct TIMER LED4 / RUNNING LED3Source-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 18
| Reported by | Shown as |
|---|---|
| Duct unit TIMER LED4 and RUNNING LED3 | LED4 5 / LED3 0 |
- Reported by
- Duct unit TIMER LED4 and RUNNING LED3
- Shown as
- LED4 5 / LED3 0
Multi-Split ceiling-floor or cassette TIMER LED6 / RUNNING LED1Source-labelled equipment family; exact models are not listed in this table · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 18
| Reported by | Shown as |
|---|---|
| Ceiling-floor or cassette unit TIMER LED6 and RUNNING LED1 | LED6 5 / LED1 0 |
- Reported by
- Ceiling-floor or cassette unit TIMER LED6 and RUNNING LED1
- Shown as
- LED6 5 / LED1 0
Multi-Split panel display on PCB 0151800644PCB 0151800644 · Haier Split and Multi Split Error Codes, version 01/2024, PDF page 18
| Reported by | Shown as |
|---|---|
| Duct, ceiling-floor, or cassette panel display | F30 |
- Reported by
- Duct, ceiling-floor, or cassette panel display
- Shown as
- F30
What to do now
Use these steps to record evidence and match the installed model to its service manual before diagnosis or a repair quote.
Record 30 and match the service manual
Record 30 and stop there; the source table gives no customer reset procedure. Arrange diagnosis with the matching service manual.
No manufacturer reset steps listed for 30
Capture the complete 30 error code and model stickers first. The source table lists the meaning but no customer reset procedure; do not treat a generic power-cycle as manufacturer guidance.
Send these to us
30 error code, a clear display photo, Haier indoor and outdoor model stickers, the controller, gateway, or unit that reported the code, operating mode and affected area, and any power or setting changes made after the code appeared
Source-specific guidance
These diagnostic-reference notes help match the code to the exact model. Electrical, refrigerant, wiring, resistance, and component checks are technician work, not DIY steps.
| Source detail | What it says |
|---|---|
| Singapore / model note | Official Haier America MRV-S MVHP service-manual row. Confirm the exact MVHP outdoor model and reporting display; no universal Singapore-model parity is claimed. |
| Singapore / model note | Official Haier Appliances FlexFit Pro large-cassette display decoder. The source converts an outdoor decimal fault to the hexadecimal code flashed indoors; the exact display identity is retained. Match the named model family before diagnosis. |
| Singapore / model note | Official regional Haier MRV5 row from outdoor-unit manual 0150525031. Confirm an AV08IMVEVA through AV26IMVEVA system, the reporting unit, and the complete suffix. The source does not enumerate connected indoor models and is not claimed to cover every Haier system or establish universal Singapore-model parity. |
- Source detail
- Singapore / model note
- What it says
- Official Haier America MRV-S MVHP service-manual row. Confirm the exact MVHP outdoor model and reporting display; no universal Singapore-model parity is claimed.
- Source detail
- Singapore / model note
- What it says
- Official Haier Appliances FlexFit Pro large-cassette display decoder. The source converts an outdoor decimal fault to the hexadecimal code flashed indoors; the exact display identity is retained. Match the named model family before diagnosis.
- Source detail
- Singapore / model note
- What it says
- Official regional Haier MRV5 row from outdoor-unit manual 0150525031. Confirm an AV08IMVEVA through AV26IMVEVA system, the reporting unit, and the complete suffix. The source does not enumerate connected indoor models and is not claimed to cover every Haier system or establish universal Singapore-model parity.
What to check before repair
The source table establishes the code meaning, not a repair procedure. Capture evidence first; model-specific tests belong to the matching service manual.
| You can check | Technician should confirm |
|---|---|
| Photograph the complete 30 error code before taking any action. | Confirm 30 exactly and record which controller, gateway, or unit reported it. |
| Capture the Haier indoor and outdoor model stickers and identify which controller or unit reported it. | Match the indoor and outdoor model stickers, installed family, and reporting equipment to the source scope. |
| The source table provides no customer reset procedure. Preserve the evidence and use the matching service manual for any system action. | Follow the matching service-manual procedure and keep measured test evidence before naming a failed part. |
- You can check
- Photograph the complete 30 error code before taking any action.
- Technician should confirm
- Confirm 30 exactly and record which controller, gateway, or unit reported it.
- You can check
- Capture the Haier indoor and outdoor model stickers and identify which controller or unit reported it.
- Technician should confirm
- Match the indoor and outdoor model stickers, installed family, and reporting equipment to the source scope.
- You can check
- The source table provides no customer reset procedure. Preserve the evidence and use the matching service manual for any system action.
- Technician should confirm
- Follow the matching service-manual procedure and keep measured test evidence before naming a failed part.
Source-bounded repair decision
Haier 30 confirms the source-table fault label, not a failed part or repair procedure. Match the installed model to its service manual and require measured diagnostic evidence before approving parts, settings, or refrigerant work.
Whether the reporting controller or unit and exact installed model are confirmed.
What the matching service-manual procedure and measured tests show.
Whether the proposed repair names the evidence for the failed part or condition.
Haier 30 questions
What does the Haier 30 error mean?
Can I fix a Haier 30 error myself?
Is it safe to keep running the aircon with a 30 error?
What causes a Haier 30 error?
Will a Haier 30 error need a repair or a full replacement?
What should I send a technician about a Haier 30 error?
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Use this quote-check guide only after the matching service manual identifies the diagnostic path.