Mitsubishi Heavy Industries Aircon E58
Capture the Mitsubishi Heavy Industries E58 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 Mitsubishi Heavy Industries E58 mean?
Mitsubishi Heavy Industries E58 is listed as current safe stop and current-safe or current-limit protection in Inverter Split, Multi-Split, Single-Split rows such as Singapore Rocket YYS single split, SRK-YYS indoor with SRC-YYS outdoor. 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 |
|---|---|---|
| Singapore Rocket YYS single split / MHI Service Support Handbook RAC RUN/TIMER checklist | Current safe stop | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
| Inverter PAC SRC outdoor diagnostics | Current-safe stop from overload, overcharge, or compressor locking | Confirm the installed unit belongs to Inverter PAC SRC ZHX-S / ZIX-S / ZJX-S / ZMX-S / ZSX-S outdoor units before using this meaning. |
| Inverter KX VRF diagnostics | Compressor loss-of-synchronism fault | Confirm the installed unit belongs to Inverter KX KX4 / KX6 / KXRE6 / KXZE1 / KXZPE1 / KXZRE1 systems before using this meaning. |
- Code
- Singapore Rocket YYS single split / MHI Service Support Handbook RAC RUN/TIMER checklist
- What it means
- Current safe stop
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
- Code
- Inverter PAC SRC outdoor diagnostics
- What it means
- Current-safe stop from overload, overcharge, or compressor locking
- What to check first
- Confirm the installed unit belongs to Inverter PAC SRC ZHX-S / ZIX-S / ZJX-S / ZMX-S / ZSX-S outdoor units before using this meaning.
- Code
- Inverter KX VRF diagnostics
- What it means
- Compressor loss-of-synchronism fault
- What to check first
- Confirm the installed unit belongs to Inverter KX KX4 / KX6 / KXRE6 / KXZE1 / KXZPE1 / KXZRE1 systems before using this meaning.
What to do now
Use these steps before customer action, gas work, a pressure check, or parts quote.
Stop using the unit if E58 returns
Stop using the unit if E58 returns with high-pressure trips or abnormal outdoor operation. Preserve the code and arrange charge and pressure checks for your model.
No manufacturer reset steps listed for E58
Capture the complete E58 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
E58 error code and blinking light, a clear display photo and blinking-light video if the unit shows one, Mitsubishi Heavy Industries model stickers, affected rooms, operating state when the code appeared, and commissioning or recent refrigerant-work history
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 | Singapore Rocket YYS model family is from the Mitsubishi Heavy Industries Aircon Singapore residential page and RAC catalogue. Fault rows are from the official MHI RAC single-split indication table; no exact public Singapore YYS fault manual was found. |
| Singapore / model note | MHI Service Support Handbook pages 16-18 RAC indication table. This is a broad residential RAC cross-check, not a model-specific operation manual; non-residential handbook sections are excluded. Checklist cause: Overload operation or refrigerant overcharge. |
| Singapore / model note | Official current MHI commercial error-table row E58. PAC/KX family applicability and display detail are cross-checked against MHI Service Support Handbook PDF pages 31, 38. Confirm the installed model family and its own service manual before parts replacement; no Singapore-only model mapping is claimed. |
- Detail
- Singapore / model note
- What it says
- Singapore Rocket YYS model family is from the Mitsubishi Heavy Industries Aircon Singapore residential page and RAC catalogue. Fault rows are from the official MHI RAC single-split indication table; no exact public Singapore YYS fault manual was found.
- Detail
- Singapore / model note
- What it says
- MHI Service Support Handbook pages 16-18 RAC indication table. This is a broad residential RAC cross-check, not a model-specific operation manual; non-residential handbook sections are excluded. Checklist cause: Overload operation or refrigerant overcharge.
- Detail
- Singapore / model note
- What it says
- Official current MHI commercial error-table row E58. PAC/KX family applicability and display detail are cross-checked against MHI Service Support Handbook PDF pages 31, 38. Confirm the installed model family and its own service manual before parts replacement; no Singapore-only model mapping is claimed.
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 E58, take a clear display photo and blinking-light video if the unit shows one. | Match E58 to your model's overcharge or high-pressure listing before the refrigerant charge is changed. |
| Capture the Mitsubishi Heavy Industries indoor and outdoor model stickers so the correct family row is used. | Compare the specified charge with commissioning records and measured operating conditions. |
| The manufacturer lists no customer reset procedure for this code. Note whether one room, several rooms, or the whole system is affected. | Follow the manufacturer's checks for metering devices, sensors, airflow, and installation before adjusting charge. |
- You can check
- Before taking any system action on E58, take a clear display photo and blinking-light video if the unit shows one.
- Technician should confirm
- Match E58 to your model's overcharge or high-pressure listing before the refrigerant charge is changed.
- You can check
- Capture the Mitsubishi Heavy Industries indoor and outdoor model stickers so the correct family row is used.
- Technician should confirm
- Compare the specified charge with commissioning records and measured operating conditions.
- 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
- Follow the manufacturer's checks for metering devices, sensors, airflow, and installation before adjusting charge.
Charge or high-pressure decision
Mitsubishi Heavy Industries E58 needs the specified charge, commissioning record, measured pressure, and source-listed high-pressure checks verified before refrigerant is adjusted. Keep diagnosis on the documented overcharge or high-pressure branch unless separate evidence proves a different fault.
The specified refrigerant charge must be matched to the installed model and pipe configuration.
Commissioning records and measured high-pressure conditions should be checked before charge is changed.
Metering devices, sensors, airflow, and installation conditions need model-specific evidence before parts or refrigerant work are approved.
Mitsubishi Heavy Industries E58 questions
What does the Mitsubishi Heavy Industries E58 error mean?
Can I fix a Mitsubishi Heavy Industries E58 error myself?
Is it safe to keep running the aircon with an E58 error?
What causes a Mitsubishi Heavy Industries E58 error?
Will a Mitsubishi Heavy Industries E58 error need a repair or a full replacement?
What should I send a technician about a Mitsubishi Heavy Industries E58 error?
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Use these if the quote mentions the parts, checks, or repair path this code points to.