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Error code reference

Samsung Air Conditioner Error Code 407

Compressor down by high pressure sensor protection control - detects when high pressure sensor value over 4.0MPa (or 38kg/cm2).

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-28, 4-71, 4-116

Samsung codesSamsung air conditioner codes
Diagnostic procedure

The full 407 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 service valve is open; compare manifold gauge and S-net values; check if indoor/outdoor EEV operates; check for piping clogs; check fan operation; check refrigerant amount.

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-28, 4-71, 4-116

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Where this code is documented

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

Models covered by the manuals that document this code

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