What PRESSURE SENSOR FAULT Means
WHICH MACHINES THIS APPLIES TO: Asko washers with a text window rather than a numeric display report their problems in words. The Use and Care Guides for the US W6761, W640 and W660 carry one such table; the operating instructions for the W8844XL and the W6884 Eco carry another; and the WM60 service manual carries the problem-indication tables for the WM60.2 and WM60.3 panels. The wording varies between them, and the section below says which document each form comes from. All of these machines clear the message the same way, by turning the machine off and then back on.
WHAT ASKO PRINTS FOR THE OWNER: the W6761, W640 and W660 guide gives one instruction - "Call a service technician." No owner check is offered.
WHAT THE SERVICE MANUAL ADDS, AND IT IS MUCH MORE INFORMATIVE: the W600-series service manual reads "A drop in pressure has been detected in the first rinse. This could be due to leakage in the level sensor or in the hose leading to it. The washing program has been interrupted."
WHAT THE PRESSURE SENSOR ACTUALLY IS: a washing machine does not look at the water. A small hose runs from the bottom of the outer tub up to a sensor, and the air trapped in that hose is compressed by the water standing in the tub. The sensor reads that air pressure and the control converts it into a water level. It is a simple arrangement and it depends entirely on the hose being sealed along its whole length.
WHY A LEAK IN THE HOSE LOOKS LIKE FALLING WATER: if the hose splits, perishes or works loose at either end, the trapped air escapes and the pressure drops, and the control reads that as the water level going down. The machine is not wrong about what it measured; it is being told something untrue by a sensing path that has lost its seal.
WHY THE FIRST RINSE IS NAMED: that is the stage where the machine refills after draining the main wash, so it is the point at which a pressure reading that does not behave the way it should becomes obvious.
CLASSIFICATION: problem, in the sensing rather than in the water path. The program is interrupted rather than continued on a measurement the control does not trust.
Common Causes of PRESSURE SENSOR FAULT
- Pressure hose to the level sensor split, perished or leaking
- Pressure hose pushed off or loose at the tub end or the sensor end
- Pressure hose kinked, trapped or blocked with detergent residue
- Level sensor itself failed or drifting
- A genuine loss of water from the tub or its seals
- Wiring or connector between the sensor and the control
🔧 One Safe Check You Can Try
There is no published owner check for this code and Asko's instruction is to call. What is genuinely useful is noticing what the machine does around the problem, because it separates a sensing problem from a real water problem and saves a technician a stage. Note whether the drum actually had water in it when the message appeared, and roughly how much against its usual level. Note whether the problem comes at the same point in every cycle - the service manual names the first rinse - or at different points. Note whether the machine has recently been moved, serviced or had anything done behind it, because the pressure hose is small, soft and easy to dislodge, and a machine that developed this problem the week after it was moved is telling you something. Note also whether there is any water on the floor, since a genuine leak from the tub produces both a falling level and a wet floor while a hose problem produces only the first. Then leave it. The sensor and its hose run up the inside of the cabinet next to the mains loom and the heating circuit, and reaching them means isolating the machine and removing panels around a spring-suspended drum.
⚠ Why You Shouldn't Go Further Than That
- The level sensor and its hose run inside the cabinet alongside the mains loom and the heating circuit, so the machine has to be isolated at the outlet or the breaker before any panel is removed.
- Reaching the tub end of the hose means working around a spring-suspended drum, which is not comparable to cleaning a filter.
- A hose refitted loosely produces exactly the same error again, so this is not something to push back on and hope for.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.