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Andrews Magnetic Sensor Z403

Andrews

Andrews Magnetic Sensor Z403

Magnetic sensor Z403 for Andrews water heaters, listed for use across the Fastflo and hot water spares range.

At a glance

  • Also known as 1824292
Manufacturer part no.
Z403
Showing prices

£84.86

£70.72 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

Magnetic sensor Z403 is a spare component manufactured for Andrews water heaters. It is listed for use across the Andrews hot water spares range, including Fastflo models. The sensor forms part of the appliance's monitoring circuit.

Signs this part needs replacing

  • Appliance fails to fire or deliver hot water
  • Intermittent operation or unexpected shutdowns
  • Fault codes or lockouts linked to sensor or flow detection
  • No change in appliance behaviour when hot water is drawn

Before you order

  • Confirm the appliance model against the fit list above
  • Check that the part number on the component being replaced matches Z403
  • If your model is not listed, consult the manufacturer's parts list before ordering

Not sure which part?

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