Boiling Tap Error Codes — All Brands

Tank not reaching temperature. Failed heating element or thermostat. Engineer required.

Temperature sensor fault. Sensor damaged or disconnected. Engineer required.

Flow sensor fault. Check mains water supply is open and pressure is adequate (min 1 bar).

Filter expired. Change filter and reset counter.

Low water pressure. Check incoming pressure. Fit pressure reducing valve if required.

Filter change reminder. Replace filter at your earliest convenience.

Filter change due (CUBE) or CO2 low (sparkling models). Check Quooker app for specific detail.

System fault. Switch off power for 30 seconds and restart. If persists, contact engineer.

No power to tank. Check fused spur, check isolation valve is open.

Filter replacement required.

Over-temperature fault. Switch off and allow to cool. If recurring, thermostat issue — book engineer.

Check mains water supply. Check inlet valve is open. Check filter is not blocked.

Filter change due. Replace Grohe Red filter and reset counter.

System error. Power cycle the unit. If persists, engineer visit required.

Filter change approaching. Plan filter replacement soon.

Filter change required. Replace and reset button on tank unit.

Press the red reset button on the underside of the tank unit. This resets the thermal cut-out after overheating.