Error code reference

Mitsubishi Air Conditioner Error Code E.CTE

Operation panel power supply short circuit / RS-485 terminals power supply short circuit.

SourceMitsubishi Packaged Rooftop Air Conditioner - Service Manual: Precedent eFlexp. 109

Diagnostic procedure

The full E.CTE procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check that the PU connector cable is not shorted and RS-485 terminals are connected correctly.

SourceMitsubishi Packaged Rooftop Air Conditioner - Service Manual: Precedent eFlexp. 109

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented

1 manual in the MyPros+ library documents this code for Mitsubishi air conditioner.

Models covered by the manuals that document this code

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