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Bosch washing machine

Bosch F19 error code: water heating too slowly

The water takes too long to reach temperature.

DIY: moderateTypical repair: £80–£170.

Likely causes

  • Heating element scaled or failing
  • Low supply voltage

How to fix F19

  1. Unplug the washing machine (or switch off at the wall) for 5–10 minutes to clear any temporary fault, then restart it.
  2. Descale with a washing-machine cleaner.
  3. Check the element if it persists.
  4. Run a short test cycle. If F19 returns, the fault is still there and an engineer should look at it.
Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.

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Frequently asked questions

What does Bosch error code F19 mean?

The water takes too long to reach temperature. On a Bosch washing machine, F19 is shown as "water heating too slowly".

How do I clear the F19 error on a Bosch washing machine?

Switch the appliance off at the wall for 5–10 minutes, then restart. If F19 comes back, work through the checks on this page — the fault is real and needs fixing, not just resetting.

How much does it cost to fix Bosch F19?

£80–£170. is typical, depending on the part. Simple blockages cost nothing to clear yourself.

Does F19 mean the same on every Bosch model?

Not always. Codes are broadly consistent within a brand, but model ranges differ. Check your manual if the symptoms below don’t match.