York Aircon H5 Error Code & Blinking Light
Capture the York H5 fault correctly, then see what should be checked before parts are quoted. Match the model first; same-looking signals can point to different rows.
What does York H5 mean?
York H5 is listed as IPM protection and module temperature is too high in Inverter Split, Multi-Split rows such as York P Series 9K-12K 115V wall-mounted ductless. This meaning comes from the manufacturer's own 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 listing that matches your unit
The same code has more than one listed meaning. Match the model family, the system type and the unit that shows the code before approving parts.
| Code | What it means | What to check first |
|---|---|---|
| York P Series 9K-12K 115V wall-mounted ductless — IPM protection | IPM protection | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
| York P Series 9K-12K 115V wall-mounted ductless — Module temperature is too high | Module temperature is too high | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
- Code
- York P Series 9K-12K 115V wall-mounted ductless — IPM protection
- What it means
- IPM protection
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
- Code
- York P Series 9K-12K 115V wall-mounted ductless — Module temperature is too high
- What it means
- Module temperature is too high
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
What to do now
Use these steps before customer action or a parts quote.
Stop using the unit if H5 returns
Stop repeated restarts if H5 returns; compressor and inverter faults can become more expensive when forced to run.
No manufacturer reset steps listed for H5
Capture the complete H5 pattern and model stickers first. The manufacturer lists no customer reset procedure; do not treat a generic power-cycle as manufacturer guidance.
Send these to us
H5 error code and blinking light, a clear display photo and blinking-light video if the unit shows one, York model stickers, affected rooms, operating state when the code appeared, and trip timing and outdoor-unit behaviour
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 |
|---|---|
| Diagnostic note | Stop repeated resets. Check inverter module, compressor wiring, outdoor airflow, and outdoor board condition. |
| Diagnostic note | Check outdoor airflow, heat-sink cooling, inverter module temperature sensing, and board condition. |
| Singapore / model note | YorkNow / Johnson Controls P Series technical-guide row. Use for the listed P Series 9K-12K 115V wall-mounted ductless family, not as a Singapore YHFF fault-code table. |
- Detail
- Diagnostic note
- What it says
- Stop repeated resets. Check inverter module, compressor wiring, outdoor airflow, and outdoor board condition.
- Detail
- Diagnostic note
- What it says
- Check outdoor airflow, heat-sink cooling, inverter module temperature sensing, and board condition.
- Detail
- Singapore / model note
- What it says
- YorkNow / Johnson Controls P Series technical-guide row. Use for the listed P Series 9K-12K 115V wall-mounted ductless family, not as a Singapore YHFF fault-code table.
What to check before repair
Use this split to separate safe evidence capture from the tests a technician should prove before quoting parts.
| You can check | Technician should confirm |
|---|---|
| Before taking any system action on H5, take a clear display photo and blinking-light video if the unit shows one. | Confirm whether H5 is compressor start, overload, lock, or drive protection. |
| Capture the York indoor and outdoor model stickers so the correct family row is used. | Check supply voltage, inverter output, IPM status, compressor current, and winding readings. |
| The manufacturer lists no customer reset procedure for this code. Note whether one room, several rooms, or the whole system is affected. | Review trip history and compressor mechanical signs before quoting replacement. |
- You can check
- Before taking any system action on H5, take a clear display photo and blinking-light video if the unit shows one.
- Technician should confirm
- Confirm whether H5 is compressor start, overload, lock, or drive protection.
- You can check
- Capture the York indoor and outdoor model stickers so the correct family row is used.
- Technician should confirm
- Check supply voltage, inverter output, IPM status, compressor current, and winding readings.
- You can check
- The manufacturer lists no customer reset procedure for this code. Note whether one room, several rooms, or the whole system is affected.
- Technician should confirm
- Review trip history and compressor mechanical signs before quoting replacement.
Compressor drive or replacement decision
York H5 can still be a repair if power, inverter, or module checks find the cause. Compressor replacement should be weighed against age, warranty, and the rest of the system condition.
Inverter or IPM faults are not the same as confirmed compressor mechanical failure.
Compressor winding and current readings should be measured before replacement is discussed.
Older systems need a repair-versus-replace check if compressor-side parts are expensive.
York H5 questions
What does the York H5 error mean?
Can I fix a York H5 error myself?
Is it safe to keep running the aircon with an H5 error?
What causes a York H5 error?
Will a York H5 error need a repair or a full replacement?
What should I send a technician about a York H5 error?
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 York list or check a few codes in the same fault category.
Describe your situation
Tell us what’s going on. Symptoms, setup, photos, anything we should know. We’ll assess and come back with the right next step.
Read next
Use these if the quote mentions the parts, checks, or repair path this code points to.