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Error code reference
Electrolux Air Conditioner Error Code U7
Four-way valve abnormal-supply voltage too low, 4V terminal loosened or broken, or 4V valve damaged.
SourceElectrolux Split Type Air Conditioner - Service Manual: 2015p. 5-10, 5-15
Diagnostic procedure
The full U7 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 if supply voltage is above AC175V; verify wiring terminal 4V connection; replace 4V valve if damaged.
SourceElectrolux Split Type Air Conditioner - Service Manual: 2015p. 5-10, 5-15
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 Electrolux air conditioner.
Models covered by the manuals that document this code
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