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Ariston Sensor For Heat Circuit 65109812

Ariston

Ariston Sensor For Heat Circuit 65109812

Ariston heat circuit sensor 65109812 for NUOS heat pump models built to date code 11/09.

At a glance

  • Part type: sensor for heat circuit
  • Also known as 1578336
Manufacturer part no.
65109812
Showing prices

£21.30

£17.75 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Ariston 65109812 is a heat circuit sensor used on Ariston NUOS heat pump water heaters. It monitors the temperature of the heat circuit so the appliance can control heating and domestic hot water production correctly. This version is specified for appliances manufactured to date code 11/09.

Signs this part needs replacing

  • Hot water temperature readings that do not match the actual stored water temperature
  • The heat pump failing to start or cutting out before the cylinder reaches setpoint
  • Fault or error codes relating to the heat circuit or temperature sensing
  • Short, erratic heating cycles as the control board reacts to a faulty signal
  • No change in behaviour after the sensor wiring and connections have been checked

Before you order

  • Confirm the appliance date code is 11/09 or earlier, as this sensor is specified to that date code
  • Check the model number against the NUOS list above
  • Inspect the sensor connector and lead for damage before ordering
  • Verify the fault is with the sensor rather than the wiring or control board

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.