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Andrews Water Inlet Thermistor -300 Z027

Andrews

Andrews Water Inlet Thermistor -300 Z027

Water inlet thermistor, part Z027, for Andrews water heaters.

At a glance

  • Also known as 1821856
Manufacturer part no.
Z027
Showing prices

£41.11

£34.26 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 water inlet thermistor -300 is a temperature sensing component used on Andrews water heaters. It monitors the incoming water temperature at the inlet and feeds that reading back to the appliance's control system. Part number Z027.

Signs this part needs replacing

  • Hot water temperature at the outlet is erratic or does not match the set point
  • The appliance displays a fault or error code linked to the inlet temperature sensor
  • Inlet temperature readings are implausible or frozen on the control display
  • Resistance measured across the thermistor does not track temperature as expected
  • Intermittent shutdown or lockout during a draw-off

Before you order

  • Confirm your appliance model against the manufacturer's parts list
  • Check the part number and any markings on the thermistor currently fitted
  • Check the connector type and mounting arrangement on the existing sensor
  • Isolate the electrical supply and shut off the water before fitting

Not sure which part?

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