Nefit fault code 6A
Fault code 6A on a Nefit boiler (including EcomLine) means: No ionisation occurs after the ignition phase, a flame is present but the flame is lost while the fan speeds up The burner receives too little gas or there is air in the gas pipe. Reset the appliance once. If the code comes back, a part is usually faulty.
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 6A on a Nefit boiler indicates: No ionisation occurs after the ignition phase, a flame is present but the flame is lost while the fan speeds up The burner receives too little gas or there is air in the gas pipe.
Fixing fault code 6A: step by step
- Check that the gas valve at the appliance is open and that other gas appliances, such as the hob, are getting gas.
- Check that the condensate trap under the appliance is filled and clean; a blocked condensate drain can make the boiler lock out.
- Check outside that the air intake and flue are clear (leaves, a nest, ice or snow).
- Reset the appliance once. If the code comes straight back, do not keep resetting it.
- If the fault keeps returning, the ignition or ionisation electrode is usually worn or dirty. It sits in the sealed combustion section: have it replaced by a qualified heating engineer.
Applies to
Nefit EcomLine, HR 11 Economy, HR 22, HR 22 Classic, HR 22 Excellent, HR 30, HR 30 Classic, HR 30 Excellent, HR 43.
Fault code 6A 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:
- 6A on EcomLine, HR 11 Economy, HR 22, HR 22 Classic, HR 22 Excellent, HR 30: No ionisation occurs after the ignition phase, but the glow plug/fan do work.
- 6A on EcomLine, HR 11 Economy, HR 22, HR 22 Classic, HR 22 Excellent, HR 30: No ionisation occurs after the ignition phase, the glow plug does not work.
- 6A on EcomLine, HR 11 Economy, HR 22, HR 22 Classic, HR 22 Excellent, HR 30: No ionisation occurs after the ignition phase, the fan is not running The fan is not working properly: check fan connectors, fuses.
- 6A 227 on ProLine, HRC 24 CW3, HRC 24 CW4, HRC 30 CW5, NxT HRC 24 CW3, NxT HRC 24 CW4: The burner does not ignite.
- 6A 227 on EcomLine, Elite HRC 24 CW4, Elite HRC 30 CW5: Ionisation current fault The ionisation current is too high. The indicator flashes at a frequency of 1 Hz. No central heating operation and no domestic hot water.
- 6A 227 on TopLine, TrendLine, HR 100 II, HRC 30 CW5 II: Insufficient ionisation current has been measured after the burner ignited.
- 6A 227 on TopLine, TrendLine, Aquapower HRC 25 CW4, Aquapower HRC 25 CW4 II, Aquapower HRC 25 CW5, Aquapower HRC 25 CW5 II: Insufficient ionisation current measured after the burner ignited.
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 fuse holder UBA 2 pcs for EcomLine and TopLine € 21.88
Nefit siphon gasket per 5 pcs for EcomLine and TopLine € 23.99
Nefit control sensor for EcomLine € 79.04
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 6A mean?
No ionisation occurs after the ignition phase, a flame is present but the flame is lost while the fan speeds up The burner receives too little gas or there is air in the gas pipe.
How do I fix fault code 6A 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 6A?
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 6A 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 →