Error code reference

Sanyo Air Conditioner Error Code FH

Indoor freeze protection-indoor unit return air blocked or fan speed is too low.

SourceSanyo DLC4/DLF4 R-410A Ductless Split System - Service Manualp. 53

Diagnostic procedure

The full FH 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 indoor unit return air path and fan speed.

SourceSanyo DLC4/DLF4 R-410A Ductless Split System - Service Manualp. 53

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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

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

Models covered by the manuals that document this code

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The full FH procedure

Where this code is documented

Models covered by the manuals that document this code

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