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Andrews Flow & Return Sensors G174

Andrews

Andrews Flow & Return Sensors G174

Flow and return temperature sensors for Andrews water heaters, part number G174.

At a glance

  • Also known as 1823866
Manufacturer part no.
G174
Showing prices

£190.94

£159.12 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 G174 flow and return sensors are temperature sensing components used on Andrews water heaters. They monitor the flow and return water temperatures so the appliance control system can regulate heating and hot water delivery. The G174 covers the flow and return temperature sensing points on the appliance.

Signs this part needs replacing

  • Hot water temperature fluctuating, or running hotter or colder than the set point
  • Appliance locking out or failing to fire, with a temperature-related fault code
  • Flow and return temperature readings that disagree with a known-good thermometer
  • Sensor resistance outside the manufacturer's stated range when tested
  • Intermittent faults that clear when the sensor wiring or connector is disturbed

Before you order

  • Confirm your appliance model against the manufacturer's parts list
  • Check how many sensors the appliance requires, as flow and return are separate sensing points
  • Compare the connector type and sensor body against the part being removed
  • Note any fault code displayed before ordering so the diagnosis can be confirmed

Not sure which part?

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