Ideal Hydroblock Kit Logic System 18ie 176638

The Ideal 176638 is a hydroblock complete kit for the Logic System range of boilers. It sits within the diverter valve and hydraulics assembly, the group of components that routes heated water either to the central heating circuit or to the domestic hot water outlet. The diverter valve opens and closes to direct flow, giving priority to hot water so that a hot tap is served before the radiators.

• Hot water runs lukewarm or cold while the central heating still works normally
• Radiators warm up when only a hot tap is running, or hot water is lost whenever the heating is on
• The diverter valve sticks, giving intermittent hot water or none at all
• The boiler locks out or flags a fault each time a hot tap is opened
• Noticeably reduced flow at taps and showers fed by the boiler

• Check the GC number and model shown on the boiler data badge against the compatibility list.
• Confirm the number on the existing component before ordering; 1782108 is also used to identify this item.
• Inspect the seals and gaskets around the hydroblock and renew any that are perished while the assembly is apart.
• Work on the boiler's water circuit should be carried out by a competent engineer.