Match the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
Show stop conditions
- A hose, tap, or connection is leaking
- The AquaStop housing or electrical valve would need to be opened or immersed
- The washer fills when powered off or internal testing is required
Likely causes
- The water tap is not fully open or household pressure is too low
- The inlet-hose filter is blocked by scale or debris
- The AquaStop or water inlet hose is kinked, restricted, or installed incorrectly
- A model-specific inlet valve, flow, or control fault prevents filling
Quick checks, in order
Open the water tap fully
Confirm a nearby tap has normal flow and that the washer supply valve is fully open.
Inspect the inlet hose
Straighten visible kinks and confirm the hose is not crushed behind the washer.
Clean only the user-accessible inlet filter
Turn off the tap first and follow the model manual. Never immerse the AquaStop safety valve in water.
Stop before valve or electrical diagnosis
If normal pressure and clean filters do not clear F29, qualified service should test the inlet system.
What happens when F29 appears?
Focus on the tap, household pressure, hose, inlet filters, and AquaStop path.
A partly closed tap, low pressure, kink, or restricted filter is the most likely external cause.
Verify the model manual and arrange inlet-valve, flow-sensing, wiring, or control diagnosis.
Stop and get qualified help when
- A hose, tap, or connection is leaking
- The AquaStop housing or electrical valve would need to be opened or immersed
- The washer fills when powered off or internal testing is required
Official support and model manuals
Use the full model number from the rating label. The manufacturer manual is the deciding reference when codes differ by region or product family.
Frequently asked questions
What does F29 mean on a Bosch washing machine?
Bosch lists F29 with E17 and F17 for low water pressure or blocked filters in the water connection or AquaStop hose on supported models.
How much water flow does Bosch recommend checking?
Bosch's US guidance says a fully opened tap should provide about 10 liters, or 2.5 gallons, per minute. A plumber should correct genuinely low household pressure.
Can unplugging clear Bosch F29?
It may clear a one-time control state, but it cannot correct low pressure, a blocked filter, a kinked hose, or a failed inlet component.