Viessmann · Mini-split

nA No fault

Normal status Viessmann DLFSHB high wall indoor

What the display is showing

No malfunction or protection active.

Applies to: DLFSHBH high wall indoor units 09-24K (Midea / Carrier / Viessmann) on DLC multi-zone or single-zone outdoor units

Models that show this code

5 models in Viessmann DLFSHB high wall indoor

DLFSHBH09XAKDLFSHBH12XAJDLFSHBH12XAKDLFSHBH18XAKDLFSHBH24XAK

Other codes on the same units

LL Controls locked
Off Timer off
On Timer on
SC Self clean running
SD Power abnormal detection
dE Demand response input error
dF Defrost
nF Filter replacement reminder

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Source: Carrier MS-DLFSHB-01 High Wall Ductless Service Manual (04/2021), Table 9 p.17. Summarized in our own words; check the original manual for your model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.