Ariston DHW Flow Switch Cable 15 Ohm Resistance 996426

A cable assembly for the domestic hot water flow switch, supplied by Ariston under part number 996426. It carries a 15 ohm resistance and forms part of the DHW demand circuit on the Microcombi range. The cable connects the flow switch to the boiler's control circuit so hot water demand is registered and the appliance fires.

• The boiler does not fire when a hot tap is opened, with no hot water demand registered.
• Hot water runs cold or only heats intermittently despite a steady draw at the tap.
• The cable insulation is cracked, brittle, scorched or chafed.
• Connections at the flow switch or control board are loose, corroded or intermittent.
• A continuity or resistance check across the cable reads outside the specified 15 ohm value.

• Confirm the appliance model and edition match the fitment listed above.
• Check the resistance value required by your appliance is 15 ohm.
• Inspect the existing cable and its connectors to confirm the fault lies with the cable rather than the flow switch itself.
• Verify the connector type and terminal arrangement at both ends before fitting.