Error code reference

Haier Air Conditioner Error Code E7

Poor communication between indoor and outdoor units (Power OFF, Timing OFF, Running blinking)

SourceHaier HSU-22H03/R2 - Full Service Manual: Split AC Unitp. 37

Diagnostic procedure

The full E7 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

First diagnostic step

Check for strong interference, poor wiring, or faulty control board

SourceHaier HSU-22H03/R2 - Full Service Manual: Split AC Unitp. 37

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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

4 manuals in the MyPros+ library document this code for Haier air conditioner.

Models covered by the manuals that document this code

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The full E7 procedure

Where this code is documented

Models covered by the manuals that document this code

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