Ascaso Steam Valve Not Sealing

Steam wand drips continuously even when the steam knob is fully closed.

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Worn steam valve seat or gasket, Scale buildup inside steam valve, Bent steam valve shaft, Loose valve packing nut

How to Fix / Troubleshooting

Initial steps:

Operate the valve: Open and close the steam knob several times to see if debris clears and dripping stops.
Descale: Run descaling solution through the steam circuit per Ascaso instructions to dissolve minor scale.

Valve service (unplug and cool first):

Access steam valve: Remove the side panel to reach the steam valve body.
Tighten packing nut: Slightly tighten the nut around the valve stem to improve sealing, but do not overtighten.
Disassemble valve: Remove the valve stem and inspect the tip and seat for wear or scale. Clean with descaler and a soft brush.
Replace seals: Install a new steam valve gasket or complete valve assembly if the seat is pitted or worn.

Repair Difficulty

Medium 3/5

Required Part

Steam Valve Assembly

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