Bosch avantixx washer dryer freezing

Hi,

If it only freezes during the drying part, and it tends to happen just after the drain pump runs, the pump itself may not be the real cause. On washer dryers, the control is often monitoring water removal, temperature and airflow during drying, so a blockage, sensor issue or control fault can trigger a lock-up at that point.

Before checking anything internal, isolate the appliance from the mains. If it turns out to be a mains/control-board fault, use a qualified appliance engineer.

1. Check the drain path fully Even though the pump has been replaced, check the pump filter housing, sump hose, drain hose and standpipe for partial blockages. A washer dryer can be much fussier in drying mode because it uses water during condensation drying.

2. Check for poor airflow or fluff build-up If this is a condenser washer dryer, fluff can build up in the condenser ducting, fan housing or chamber. Restricted airflow can cause overheating or abnormal drying behaviour, sometimes just as the machine changes stage and drains water.

3. Inspect the pressure system A partially blocked pressure chamber or pressure switch hose can give false “water level” readings. That can confuse the machine when it drains during drying and make it stall or freeze.

4. Check heating circuit parts Thermistors, thermostats and heater issues can also cause drying-only faults. If the dryer is getting too hot, not heating properly, or cutting out intermittently, that is worth testing.

5. Consider the control board If it always freezes at the same point, especially after the pump is energised, the control board or a dry joint/relay fault is possible rather than the pump itself.

If you can add the full E-Nr model number from the rating plate, it may help narrow down the likely drying system used on your Bosch.

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