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Ideal Hydroblock System Assembly From Prefix ABU 177667

Ideal

Ideal Hydroblock System Assembly From Prefix ABU 177667

Hydroblock system assembly for Ideal Logic System 15ie to 30ie boilers, from prefix ABU onwards but before prefix ACQ; alternative number 1783011.

At a glance

  • Part type: Diverter valves and hydraulics
  • Appliance family: Logic System
  • Also known as 1783011
Manufacturer part no.
177667
Showing prices

£389.88

£324.90 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 Ideal 177667 is a hydroblock system assembly used on Logic System boilers. It carries the diverter valve and the associated hydraulic components that route heated water around the appliance, opening and closing to send water either to the radiators or to the domestic hot water outlets. The diverter gives priority to hot water, so when a hot tap is opened while the heating is running, the boiler serves the tap first.

Signs this part needs replacing

  • Hot water runs cold or lukewarm while the heating is calling
  • Radiators warm up when a hot tap is opened
  • No hot water at the taps or shower even though the boiler fires
  • Diverter sticking, giving intermittent heating or hot water
  • Water weeping from the hydroblock area of the boiler

Before you order

  • Check the serial prefix on the appliance: this assembly suits units from prefix ABU onwards but before prefix ACQ.
  • Confirm the GC number on the boiler data badge against the compatibility list below.
  • Cross-check the alternative part number 1783011 where the original number is not shown.

Not sure which part?

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