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Samsung · Heat pumps · Samsung EHS Mono R32 (air-to-water monobloc)

901Water inlet (PHE) temperature sensor error(open/short)

Name in the manufacturer's documentation (service manual): Water inlet (PHE) temperature sensor error(open/short)[1]

In plain words (editorial)

The water inlet temperature sensor (plate heat exchanger) is open or short-circuited. The service manual checks the sensor connector on the PCB and measures the sensor resistance.

When to call a service technician: Contact an authorised Samsung service technician or your installer.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →

Sources

Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.

  1. [1] Samsung EHS R-32 Mono Outdoor (AE***RXYDEG/DGG) – Installation manual (DB68-08408A-07 (2024-01-10)) , p. 44 official manufacturer document quote verified 901 Water inlet (PHE) temperature sensor error(open/short)
  2. [2] Samsung – Eco Heating System, Service Manual: Outdoor unit (Split AE..RXEDEG, Mono AE..RXYDEG) + Tank integrated hydro unit – 2019 (PDF copy from distributor climamarket.bg) , p. 79 manufacturer document – copy from a distributor quote verified restart the system after connecting to the pcb connector
  3. [3] Samsung – Eco Heating System, Service Manual: Outdoor unit (Split AE..RXEDEG, Mono AE..RXYDEG) + Tank integrated hydro unit – 2019 (PDF copy from distributor climamarket.bg) , p. 79 manufacturer document – copy from a distributor quote verified remove the temperature sensor connector from the pcb and measure the resistance between two terminals