Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Andrews Wiring Harness By-Pass Water Servo 7700320

Andrews

Andrews Wiring Harness By-Pass Water Servo 7700320

Wiring harness for the by-pass water servo on Andrews Fastflo water heaters.

At a glance

  • Appliance family: Andrews Fastflo water heaters
  • Also known as 1822896
Manufacturer part no.
7700320
Showing prices

£45.08

£37.57 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 wiring harness for the by-pass water servo is a replacement electrical lead used on Andrews Fastflo water heaters. It connects the by-pass water servo to the appliance's control wiring, allowing the servo to receive power and signals. The part is identified by part number 7700320.

Signs this part needs replacing

  • The by-pass water servo fails to operate or operates intermittently.
  • Visible damage to the harness, such as cracked, brittle or heat-damaged insulation.
  • Exposed conductors, chafing or broken wires along the harness length.
  • Loose, corroded or discoloured connector terminals at either end.
  • Fault codes or error indications linked to the servo or water circuit.

Before you order

  • Check the appliance model against the fitment list above.
  • Confirm the existing harness connector type and pin arrangement match the part.
  • Verify the part number 7700320 on the existing component or in the manufacturer's parts list.
  • Isolate the appliance from the power supply before fitting.

Not sure which part?

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