Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Andrews Temperature Sensor DHW Tank B3 7709329

Andrews

Andrews Temperature Sensor DHW Tank B3 7709329

Temperature sensor for the domestic hot water tank (B3) on Andrews Maxxflo EVO water heaters.

At a glance

  • Appliance family: Maxxflo EVO water heaters
  • Also known as 1823342
Manufacturer part no.
7709329
Showing prices

£156.47

£130.39 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Andrews 7709329 is a temperature sensor for the domestic hot water (DHW) tank, designated B3. It is fitted to Andrews Maxxflo EVO water heaters to monitor stored hot water temperature and feed that reading back to the appliance control. The sensor supports accurate regulation of the DHW temperature.

Signs this part needs replacing

  • Hot water temperature reads incorrectly or fluctuates
  • The appliance fails to maintain the set DHW temperature
  • Fault codes relating to the DHW sensor appear
  • Intermittent hot water or unexpected shutdowns

Before you order

  • Confirm your appliance model against the fit list above
  • Check the existing sensor's location and connection type
  • Verify the part number 7709329 matches the sensor being replaced
  • Isolate power and water supplies before fitting

Not sure which part?

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