Ferroli fault code A 3
Fault code A 3 on a Ferroli boiler (including HR Econpact 3) means: Flue gas temperature too high Detected 3 times within 24 hours. This sensor is fitted as standard. Reset the appliance once. If the code comes back, a part is usually faulty, often a temperature sensor. 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 A 3 on a Ferroli boiler indicates: Flue gas temperature too high Detected 3 times within 24 hours. This sensor is fitted as standard.
Applies to
Ferroli HR Econpact 3, -, HR Econpact 3HP, HR Econpact 4, HR Econpact 4HP, HR Econpact 5, HR Econpact 50A, HR Econpact 50B, HR Econpact A (135A), HR Ultima 3, 3HP.
Fault code A 3 on other Ferroli series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- A3 on HR Econpact, 125C, 127A (27A), 127C (27C), 135A (35A), 135C (35C): Flue gas temperature too high. The flue gas temperature has been higher than 95°C 3 times within 24 hours.
- A3 on MegaDens 3 122 / 222 / 322, MegaDens 4 126 / 226 / 326, MegaDens 4SHR 126, MegaDens 5 131 / 231 / 331, MegaDens 5SHR 131, -: Central heating flow temperature too high The central heating flow temperature is too high or has been too high.
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 A 3, the part involved is usually in the category: sensor.
Based on the cause, these original Ferroli parts fit (always check the type number of your appliance):
- Ferroli flow sensor € 95.95
- Ferroli temperature sensor € 34.95
- Ferroli NTC sensor 3264131 € 30.95
Further reading on this cause
Other Ferroli codes with the same cause
- 8. — Flow domestic hot water sensor faulty
- A 07 — Sensor channel input faulty
- A 17 — Central heating sensor read error
- A 26 — Flue gas sensor measures a temperature above 90 C, or flue gas sensor 1000 Ohm resistor…
- A42 — Temperature difference too large in the dual flow sensor
- E 02 — Central heating control sensor not connected
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 A 3 mean?
Flue gas temperature too high Detected 3 times within 24 hours. This sensor is fitted as standard.
How do I fix fault code A 3 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 A 3?
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 A 3 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 →