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Danfoss HSA3 3 port valve actuator 087N658700

Danfoss

Danfoss HSA3 3 port valve actuator 087N658700

A white 230V actuator motor from Danfoss's H Series, designed to operate a 3-port valve on a domestic heating system.

At a glance

  • Also known as 4104745
  • A Gas Safe registered engineer should carry out any work involving the boiler or its controls
Manufacturer part no.
087N658700
Showing prices

£86.40

£72.00 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
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 Danfoss HSA3 is a 3-port valve actuator from Danfoss's H Series, part number 087N658700. It is the motor unit that drives a 3-port valve, switching the flow between heating, hot water, or both as called for by the system controls, and is designed for use with Danfoss HSV3 valve bodies.

Signs this part needs replacing

  • Valve fails to switch between heating and hot water positions
  • Motor hums or runs but the valve head does not move
  • No power reaching the actuator despite a live feed at the terminals
  • Actuator overheats or gives off a burning smell
  • System calls for heat but one or both circuits stay cold

Before you order

  • Check the part number stamped on the existing actuator matches 087N658700 before fitting
  • Isolate electrical power to the valve before disconnecting wiring
  • Confirm the actuator detaches from the valve body without draining the system, but check for any residual pressure first
  • A Gas Safe registered engineer should carry out any work involving the boiler or its controls

Not sure which part?

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