Samsung · Heat pumps · Samsung EHS Mono R32 (air-to-water monobloc)
904DHW tank temperature sensor error
Name in the manufacturer's documentation (service manual): DHW tank temperature sensor error
[1]
In plain words (editorial)
Error of the hot water (DHW) tank temperature sensor. 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.
For technicians
Steps given by the manufacturer (source text)
⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.
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] Samsung EHS R-32 Mono Outdoor (AE***RXYDEG/DGG) – Installation manual (DB68-08408A-07 (2024-01-10)) , p. 44 official manufacturer document quote verified
904 DHW tank temperature sensor error
- [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] 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