Ferroli fault code A25
Fault code A25 on a Ferroli boiler (including MegaDens 3 122 / 222 / 322 and MegaDens 4 126 / 226 / 326) means: Fault F36 has occurred more than 3 times in the last 24 hours With fault F36 the ionisation electrode is short-circuited to earth, possibly due to moisture. 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 A25 on a Ferroli boiler indicates: Fault F36 has occurred more than 3 times in the last 24 hours With fault F36 the ionisation electrode is short-circuited to earth, possibly due to moisture.
Applies to
Ferroli MegaDens 3 122 / 222 / 322, MegaDens 4 126 / 226 / 326, MegaDens 4SHR 126, MegaDens 5 131 / 231 / 331, MegaDens 5SHR 131, -.
Matching parts
Ferroli parts are available from Instalpunt; shipping to EU countries from €17.95 (€24.95 for more distant countries), usually 3–5 working days.
For fault code A25, the part involved is usually in the category: electrode.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Ferroli split pin automatic air vent pump Megadens/Domina € 5.89
- Ferroli inspection hatch gasket 27C € 9.81
- Ferroli holder glow plug/sight glass 3286150 € 9.81
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 Ferroli boiler fault code A25 mean?
Fault F36 has occurred more than 3 times in the last 24 hours With fault F36 the ionisation electrode is short-circuited to earth, possibly due to moisture.
How do I fix fault code A25 on a Ferroli 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 Ferroli fault code A25?
That depends on the exact cause. In the Ferroli parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code A25 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 Ferroli boiler faults and codes at a glance →