Viessmann · Mini-split

PCA1 Refrigerant pipe condensation protection

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

What the control is telling you

The unit stopped to avoid sweating on the refrigerant pipe. The manual gives no flow chart for this code.

Applies to: DLCMRBH / DLCMHBH multi-zone outdoor units 18-48K (Midea, Carrier, Viessmann Vitocal 200-S)

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

PC42 Compressor start failure
PC43 Compressor phase loss
PC44 Zero speed protection
PC45 Compressor drive chip (IR / 341 PWM) failure
PC46 Compressor speed out of control
PC49 Compressor over-current
PH90 Evaporator coil too hot
PH91 Evaporator coil too cold

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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 23 Outdoor Unit Error Display p.26. 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.