Viessmann · Mini-split

J1 Indoor coil temperature protection in heating

Medium severity Viessmann Vitocal 200-S DLCM(R/H)B multi-zone outdoor

What the control is telling you

Indoor coil temperature out of range in heating. No flow chart in the manual. Shown on the 48K high heat model.

Applies to: DLCMHBH48EAK (48K high heat) only

Models that show this code

7 models in Viessmann Vitocal 200-S DLCM(R/H)B multi-zone outdoor

DLCMHBH24CAKDLCMHBH30DAKDLCMHBH36DAKDLCMHBH48EAKDLCMRBH18BAKDLCMRBH36DAKDLCMRBH48EAK

Other codes on the same units

F4 Outdoor EEPROM error
F5 Outdoor fan speed out of control
FL14 Indoor and outdoor units not compatible
J0 Outdoor coil overheat in cooling
J2 Discharge temperature protection
J3 PFC module protection
J4 Main board to IPM board communication error
J5 High pressure protection

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Source: DLCMRBH/DLCMHBH Multi-Zone Outdoor Service Manual (sold as Midea, Carrier and Viessmann Vitocal 200-S; Viessmann doc 6225551-03, 12/2024), Table 24 Outdoor Unit Error Display (48 High Heat only) p.27; diagnosis p.27. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

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.