What does Toshiba P29 mean?
Toshiba SMMS / SHRM VRF P29 is listed as compressor position-detection circuit fault in fault lists for more than one model family, including SHRM Advance MMY-SUG R32, R32 RAV Digital Inverter Series 1, and R32 RAV Super Digital Inverter 1ATW-E. This meaning comes from the manufacturer's own diagnostic material. Confirm the exact model, series, or signal row before accepting a parts quote.
This page gives the code's listed meaning only; the matching service manual holds the diagnostic checks.
The reporting equipment and exact installed model determine which service procedure applies.
A cause should be recorded only after the matching service-manual checks are completed.
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 P29 and match the service manual
Record P29 and stop there; the manufacturer gives no customer reset procedure. Arrange diagnosis with the matching service manual.
No manufacturer reset steps listed for P29
Capture the complete P29 error code and model stickers first. The manufacturer lists the meaning but no customer reset procedure; do not treat a generic power-cycle as manufacturer guidance.
Send these to us
P29 error code, a clear display photo, Toshiba SMMS / SHRM VRF 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
Guidance for your model
Notes that match the code to your exact model. Electrical, refrigerant, wiring, resistance and component checks are for a technician.
| Detail | What it says |
|---|---|
| Singapore / model note | Official Toshiba SMMS-u MMY-MUP service evidence. Toshiba Singapore lists cooling-only MMY-MUP...T8P-SG SMMS Infinity models, while this service manual covers European MMY-MUP...HT8P-E heat-pump variants. Confirm the complete model suffix and its local service manual before diagnosis or parts replacement. |
| Singapore / model note | Official Toshiba SVM-22072-1 row for SHRM Advance MMY-SUG R32 heat-pump and heat-recovery systems. The checked manufacturer page is regional rather than a Singapore product listing, so confirm the full model suffix and locally supplied service manual before diagnosis or parts replacement. |
| Singapore / model note | Official Toshiba A10-1901 row for the 50 Hz R32 RAV-GM2241 and RAV-GM2801 Digital Inverter family used with light-commercial indoor units. This regional source does not prove that every listed model is sold in Singapore; confirm the full model suffix and local service manual. |
- Detail
- Singapore / model note
- What it says
- Official Toshiba SMMS-u MMY-MUP service evidence. Toshiba Singapore lists cooling-only MMY-MUP...T8P-SG SMMS Infinity models, while this service manual covers European MMY-MUP...HT8P-E heat-pump variants. Confirm the complete model suffix and its local service manual before diagnosis or parts replacement.
- Detail
- Singapore / model note
- What it says
- Official Toshiba SVM-22072-1 row for SHRM Advance MMY-SUG R32 heat-pump and heat-recovery systems. The checked manufacturer page is regional rather than a Singapore product listing, so confirm the full model suffix and locally supplied service manual before diagnosis or parts replacement.
- Detail
- Singapore / model note
- What it says
- Official Toshiba A10-1901 row for the 50 Hz R32 RAV-GM2241 and RAV-GM2801 Digital Inverter family used with light-commercial indoor units. This regional source does not prove that every listed model is sold in Singapore; confirm the full model suffix and local service manual.
What to check before repair
The manufacturer's fault table gives the code's 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 P29 error code before taking any action. | Confirm P29 exactly and record which controller, gateway, or unit reported it. |
| Capture the Toshiba SMMS / SHRM VRF 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 manufacturer 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 P29 error code before taking any action.
- Technician should confirm
- Confirm P29 exactly and record which controller, gateway, or unit reported it.
- You can check
- Capture the Toshiba SMMS / SHRM VRF 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 manufacturer 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.
What changes the next step
These checks confirm source applicability and evidence without treating the code table as a repair flow.
| What you see | What it points to |
|---|---|
| The complete P29 code and reporting equipment are recorded. | Use the listed meaning as the starting point; the code alone does not identify a failed part. |
| The installed model and its model family are confirmed. | Use only the matching service-manual procedure for diagnosis and any permitted system action. |
| A quote names a part, setting change, or refrigerant work from the code alone. | Ask for the model-specific test result that supports it before approving the work. |
- What you see
- The complete P29 code and reporting equipment are recorded.
- What it points to
- Use the listed meaning as the starting point; the code alone does not identify a failed part.
- What you see
- The installed model and its model family are confirmed.
- What it points to
- Use only the matching service-manual procedure for diagnosis and any permitted system action.
- What you see
- A quote names a part, setting change, or refrigerant work from the code alone.
- What it points to
- Ask for the model-specific test result that supports it before approving the work.
Source-bounded repair decision
Toshiba SMMS / SHRM VRF P29 confirms the fault label the manufacturer lists, 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.
Toshiba P29 questions
What does the Toshiba P29 error mean?
Can I fix a Toshiba P29 error myself?
Is it safe to keep running the aircon with a P29 error?
What causes a Toshiba P29 error?
Will a Toshiba P29 error need a repair or a full replacement?
What should I send a technician about a Toshiba P29 error?
Where to go next
Confirm the fault
Share the error code, model number and symptoms so we can assess the likely cause.
Not the right code?
Browse the full Toshiba list or check a few codes in the same fault category.
Read next
Use this quote-check guide only after the matching service manual identifies the diagnostic path.