Nefit fault code 204
Fault code 204 on a Nefit boiler (including 2300i) means: The current flow temperature is higher than the required flow temperature. The burner is switched off. Reset the appliance once. If the code comes back, a part is usually faulty. You can check the water pressure and settings yourself; leave work on gas-carrying parts to a certified gas engineer.
After a safety alert (gas, flue gas, combustion), reset no more than once and call in a certified gas engineer. If you smell gas, call your national gas emergency number or 112 immediately.
Cause
Fault code 204 on a Nefit boiler indicates: The current flow temperature is higher than the required flow temperature. The burner is switched off.
Applies to
Nefit 2300i, HRC25/3, HRC25/4.
Fault code 204 on other Nefit series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- 204 on 9000i, AquaPower Plus HRC 30 CW6, AquaPower Plus HRC 46 CW6: The boiler is waiting. The measured flow temperature is higher than the calculated or set heating water temperature.
Matching parts
Nefit parts are available from Instalpunt; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days.
Parts per Nefit-series: ProLine (NxT) · TrendLine (II) · EcomLine · TopLine.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Bosch gasket gas valve 41x3 (10x) € 9.15
- Bosch gasket 70 mm € 11.11
- Bosch gasket 80 mm € 11.11
Fix it yourself or call an engineer?
Always consult the manual for your appliance and work safely. If in doubt or if the fault comes back, call in a qualified professional. A question about a part? Write to us at info@instalpunt.nl.
Frequently asked questions
What does Nefit boiler fault code 204 mean?
The current flow temperature is higher than the required flow temperature. The burner is switched off.
How do I fix fault code 204 on a Nefit boiler?
First check the cause described above. Then restart the appliance using the reset button. If the message comes back, a part usually needs replacing or the fault needs to be repaired by a qualified professional.
Which parts do I need for Nefit fault code 204?
That depends on the exact cause. In the Nefit parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code 204 myself?
You can reset the appliance and check things like the water pressure or settings yourself. Work on gas-carrying parts must be left to a certified gas engineer.
All Nefit boiler faults and codes at a glance →