Nefit fault code 224
Fault code 224 on a Nefit boiler (including 9000i) means: Heat exchanger temperature limiter or flue gas temperature limiter has tripped. 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 224 on a Nefit boiler indicates: Heat exchanger temperature limiter or flue gas temperature limiter has tripped.
Applies to
Nefit 9000i, AquaPower Plus HRC 30 CW6, AquaPower Plus HRC 46 CW6.
Fault code 224 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:
- 224 on 2300i, HRC25/3, HRC25/4: Flue gas thermostat or heat exchanger temperature limiter tripped.
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:
- Nefit flue sleeve € 8.50
- Nefit gasket gas-air mixture duct € 11.76
- Nefit pump swivel nut 1" old number: 73675 for TopLine € 13.07
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 224 mean?
Heat exchanger temperature limiter or flue gas temperature limiter has tripped.
How do I fix fault code 224 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 224?
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 224 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 →