Mitsubishi Electric Aircon E6 / E7
Confirm the listed meaning of Mitsubishi Electric E6 / E7, note the unit that shows the code and its model, and match the service manual before diagnosis. Match the model first; same-looking signals can point to different rows.
What does Mitsubishi Electric E6 / E7 mean?
Mitsubishi Electric E6 / E7 is listed as indoor-outdoor communication receiving error, indoor/outdoor communication receiving error, and indoor/outdoor unit communication error in fault lists for more than one model family, including PLA-M EA2 R32 four-way cassette and PEAD-M JA(L) ducted. 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 |
|---|---|---|
| PLA-M EA2 R32 four-way cassette — Indoor-outdoor communication receiving error | Indoor-outdoor communication receiving error | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
| PEAD-M JA(L) ducted — Indoor/outdoor communication receiving error | Indoor/outdoor communication receiving error | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
| PLY-ZM / PLY-M cassette / PUY-P / PUY-M outdoor LED table | Indoor/outdoor unit communication error | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
| SUY-KA / SUY-ZM / SUY-M outdoor LED table | Compressor protector opens | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
| PLA-M EA2 R32 four-way cassette — Indoor-outdoor communication transmitting error | Indoor-outdoor communication transmitting error | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
| PEAD-M JA(L) ducted — Indoor/outdoor communication transmitting error | Indoor/outdoor communication transmitting error | Match this meaning to your installed model and the unit that shows the code, then use the checks below. |
- Code
- PLA-M EA2 R32 four-way cassette — Indoor-outdoor communication receiving error
- What it means
- Indoor-outdoor communication receiving error
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
- Code
- PEAD-M JA(L) ducted — Indoor/outdoor communication receiving error
- What it means
- Indoor/outdoor communication receiving error
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
- Code
- PLY-ZM / PLY-M cassette / PUY-P / PUY-M outdoor LED table
- What it means
- Indoor/outdoor unit communication error
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
- Code
- SUY-KA / SUY-ZM / SUY-M outdoor LED table
- What it means
- Compressor protector opens
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
- Code
- PLA-M EA2 R32 four-way cassette — Indoor-outdoor communication transmitting error
- What it means
- Indoor-outdoor communication transmitting error
- What to check first
- Match this meaning to your installed model and the unit that shows the code, then use the checks below.
- Code
- PEAD-M JA(L) ducted — Indoor/outdoor communication transmitting error
- What it means
- Indoor/outdoor communication transmitting error
- 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 to record evidence and match the installed model to its service manual before diagnosis or a repair quote.
Record E6 / E7 and match the service manual
Record E6 / E7 and stop there; the manufacturer gives no customer reset procedure. Arrange diagnosis with the matching service manual.
No manufacturer reset steps listed for E6 / E7
Capture the complete E6 / E7 error code and blinking light 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
E6 / E7 error code and blinking light, a clear display photo and blinking-light video if the unit shows one, Mitsubishi Electric 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 OCH783B row for the PLA-M35EA2 through PLA-M140EA2 R32 cassette family. Match the indoor model and connected outdoor unit before using this interpretation. |
| Singapore / model note | Official PEAD-M JA(L) indoor-unit interpretation. Confirm the exact indoor and connected outdoor models before diagnosis. |
| Singapore / model note | Official Mitsubishi Electric Singapore Mr Slim PDF page 3, Output pattern A. Use only for the listed PLY cassette, PEY ceiling-concealed ducted, and PCY ceiling-suspended indoor models; confirm the paired outdoor model before parts replacement. |
- Detail
- Singapore / model note
- What it says
- Official OCH783B row for the PLA-M35EA2 through PLA-M140EA2 R32 cassette family. Match the indoor model and connected outdoor unit before using this interpretation.
- Detail
- Singapore / model note
- What it says
- Official PEAD-M JA(L) indoor-unit interpretation. Confirm the exact indoor and connected outdoor models before diagnosis.
- Detail
- Singapore / model note
- What it says
- Official Mitsubishi Electric Singapore Mr Slim PDF page 3, Output pattern A. Use only for the listed PLY cassette, PEY ceiling-concealed ducted, and PCY ceiling-suspended indoor models; confirm the paired outdoor model before parts replacement.
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 E6 / E7 error code and blinking light before taking any action. | Confirm E6 / E7 exactly and record which controller, gateway, or unit reported it. |
| Capture the Mitsubishi Electric 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 E6 / E7 error code and blinking light before taking any action.
- Technician should confirm
- Confirm E6 / E7 exactly and record which controller, gateway, or unit reported it.
- You can check
- Capture the Mitsubishi Electric 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.
Source-bounded repair decision
Mitsubishi Electric E6 / E7 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.
Mitsubishi Electric E6 / E7 questions
What does the Mitsubishi Electric E6 / E7 error mean?
Can I fix a Mitsubishi Electric E6 / E7 error myself?
Is it safe to keep running the aircon with an E6 / E7 error?
What causes a Mitsubishi Electric E6 / E7 error?
Will a Mitsubishi Electric E6 / E7 error need a repair or a full replacement?
What should I send a technician about a Mitsubishi Electric E6 / E7 error?
Diagnostic cases
How we approached similar faults on site.
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Read next
Use this quote-check guide only after the matching service manual identifies the diagnostic path.