Guided Diagnostics
3-8 min · 7 steps

Danfoss AK-SC 355: Sensor / Point Offline

Diagnose an AK-SC 355 offline / out-of-range monitored point — configuration, wiring, sensor, or input.

First step

Is the point's displayed value pinned open / short (obviously out of range)?

Yes — pinned / out of range
No — it reads a plausible value

This is a preview of the first step. Run the full interactive diagnostic free — it walks you all the way to the likely root cause.

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For qualified refrigeration technicians. Always follow manufacturer procedures and local codes. R-290 (propane) and other flammable refrigerants require A3-rated tools and safety practices.