Dishwasher
E19
The E19 error code on an Electrolux dishwasher points to a fault with the hot water inlet system — specifically, the appliance is detecting that water isn’t being heated to the correct temperature fast enough. It’s a moderately serious fault that will stop your dishwasher completing a cycle, but in many cases it’s fixable without a call-out.
What does this error mean?
E19 indicates that the dishwasher’s control board has detected a problem with the hot water intake or the flow heater (also called an instantaneous heater) used in some Electrolux models. Rather than a tank heater, these machines heat water as it flows through — and E19 fires when that process fails or takes too long. The machine is protecting itself from running a wash with water that is too cold to clean or sanitise effectively.
Est. repair cost
£80–£150 for professional heater or sensor repair; £5 DIY descaler if limescale is the cause; £20–£45 for a DIY NTC sensor replacement (advanced users only)
🔍 Likely causes
🛠️ Step-by-step fix
Reset the machine first: turn it off at the mains, wait 60 seconds, then switch back on and run a short cycle. A one-off E19 can be a control board glitch cleared by a reset.
Check your water supply: ensure the inlet tap (usually under the sink) is fully open and your home has normal water pressure. A partially closed valve restricts flow and can trigger E19.
Descale the dishwasher: if you live in a hard water area (London, South East, Midlands), run a dedicated dishwasher descaler such as Finish Dishwasher Cleaner or Durgol. Limescale on the heater is a very common culprit and costs under £5 to treat.
Inspect the inlet hose and filter: turn off the water supply, disconnect the inlet hose from the back of the machine, and check the small mesh filter inside the hose fitting for blockages. Rinse it under the tap and refit securely.
Check for visible wiring damage near the heater: if you’re comfortable doing so, remove the lower kickplate panel (usually held by two screws). Look for any obviously burnt, melted, or disconnected wires near the heater unit. Do NOT touch or reconnect wiring yourself — if damage is visible, stop and call a technician.
If the error persists after the above steps, the flow heater or NTC sensor likely needs replacing — these are not DIY jobs as they require draining the machine, accessing internal components, and working near mains electrical parts. Book a repair at this stage.
📞 When to call a professional
Call an appliance engineer if the E19 error returns after a reset, descale, and inlet check — this almost certainly means a failed flow heater, NTC sensor, or wiring fault that requires internal access. When you call, tell the engineer: ‘My Electrolux dishwasher is showing error code E19, which I understand relates to the flow heater or hot water intake system.’ This will help them bring the right parts. Do not attempt to open the heater unit or disconnect electrical components yourself.
⚖️ Repair or replace?
A professional repair for E19 — typically a flow heater or NTC sensor replacement — costs £80–£150 including parts and labour in the UK. If your Electrolux dishwasher is under 7 years old, repair is almost always worth it given a new mid-range dishwasher costs £400–£700. If it’s over 8–10 years old and the heater has failed, replacement is worth serious consideration — especially if other components are ageing.