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  1. Deleted member 32524

    ferroli modena 102 standard efficincy

    Hello all, Need some help with above boiler. Keeps cutting out on hot water and CH. Works fine with cover off. Thermistors test ok. Replaced venturi, no joy. Got to be an air problem but what? No blockage in flue. Thanks for the help. Duncan
  2. G

    Ferroli Maxima 35c

    Replacing the expansion vessel. Is that a boiler off the wall job? Don't think there's a great amount of space between the top of the boiler and the ceiling
  3. B

    Ferroli Optimax Heat Exchanger

    Have any of you guys ever changed the main heat exchanger on one of these god awful boilers??? Had a right ******* doing it! The sump gasket is a tiny bit too small so need to stretch it over, but everytime you get over all 4 corners and let go, at least one corner would pop off! You need to...
  4. A

    Ferroli Modena boiler - hot water works but heating doesn't

    Hello, this is my first post on the site so I hope I have posted it in the correct category! I had a Ferroli Modena 25C HE combi boiler fitted about three to four years ago and it has not been very reliable. The gas fitter (who incidentally has been struck off the gas fitter's register) chose...
    • AussieAndrew
    • Thread
    • boiler ferroli heating hot water water
    • Replies: 0
    • Forum: Boilers
  5. B

    Ferroli Modena

    Alright guys? looking at this boiler for my mate. no heating or hot water, light comes on with demand, pump runs with heating, but no fan. Checked thermistors and they were ok so checked fan a bit more, 0v between l and n to fan, 240v between l and e to fan, 240v between n and e. i think some...
  6. Riley

    Urgent help ferroli nightmare

    Gone to look at boiler for mate who is selling. Turned off boiler to do checks try and turn back on and I only get F9 GC 47-267-38 hot water was working now nothing. Checked continuity on wiring to water sensor as indicated but have no idea what voltage I should be looking at as helpline...
  7. I

    Issues with Ferroli Optimax HE Plus 31C

    Hi, I recently moved to a flat which has a Ferroli Optimax HE Plus 31 C boiler. Up until recently it worked fine but as of late there has been issues when using only the over the bath shower. The boiler has no problems heating the water, the ignition ignites and there is a constant flow...
  8. U

    ferroli maxima 35 c

    Hi. We have the above boiler and it keeps losing pressure (from 0.7 to 0.5) when we try and have a shower and turns the water cold. The boiler states a f37 fault code....handly not listed in the manual. Can anybody help? I have tried increasing the pressure on the flex loop (not sure if thats...
  9. B

    Looking for help with Ferroli Gn1

    Hi all, Serviced a ferroli gn1 boiler today. Checked to make sure burner started up ok, removed burner, cleaned out chamber, reassembled, took cover off oil pump and cleaned out filter. Took off filter on oil line and cleaned out. Fitted new nozzle and fired burner up which didn't sound right...
  10. A

    Ferroli Optimax HE 31C Circulation Issues

    Hi, Been to the above horrendous heap of junk this evening to do a service. She tells me she's got a problem with the heating and fault code d2. I've found out d2 is that the ch temp has gone above the set temp and that the boiler is cooling until the temp is lower. Now the upstairs rads...
  11. Hobo128

    Ferroli domicompact f24b f5 fault

    Today I have been to said boiler and when running the tap or central heating the f5 fault pops up. THis happens after a minute or do. I took the combustion case of and ran thd tap again and it worked with no fault. Put the case back on and it gave me the f5 fault. Didn't have much time to start...
  12. J

    Ferroli optimax h31 Central heating not working bu hot water fine

    Not sure how to merge the last thread by Looking for some help please.... The hot water is working fine but for some reason the central heating won't come on. I've taken it out of summer mode, turned up the thermostat in the room to full(the display on this shows flames to state the boilers...
    • Jonnyreyn1
    • Thread
    • central central heating ferroli heating hot water water
    • Replies: 5
    • Forum: Central Heating Forum
  13. M

    Ferroli optimax he plus 31c expansion vessel

    hi everyone, I have just joined, so apologies if this has been asked before. pressure keeps dropping to zero. When at zero there is no pressure on the expansion vessel,which should be at 1 bar, it looks like the only way to replace this is to remove the boiler completely. can I just tee into ch...
    • Myquantum
    • Thread
    • expansion expansion vessel ferroli plus vessel
    • Replies: 2
    • Forum: Central Heating Forum
  14. P

    Ferroli Demicondens 26 c losing pressure

    Hi all, I need to pick your brains! I don't do many boiler repairs and would some advice please. I visited a customer the other week to replace a radiator. She had only just moved in to the property and she was advised by the former owner that every few weeks she would need to top up her combi...
  15. U

    Ferroli cgnk 100 unit - suddenly leaking diesel

    Hello out there My Ferroli CGNK100 unit was, and still is working fine. However, it suddenly started leaking diesel at a fair rate.... not gushing out but sufficient to inspire panic in myself and the Memsah'b. I live down in Spain, my question is simply whether a new boiler is...
  16. J

    Ferroli Hawk 2 air pressure problem

    Hi guys, any help would be greatly appreciated. The boiler will not fire for heating or hot water unless the combustion cover is loosened or removed. I,m aware there is some kind of air pressure problem but I've checked and cleaned the venturi, air tubes and fan, they are all ok. The fan is...
  17. G

    Ferroli Fertech 31C (pile of junk) question.

    Wee bit of help please. Last job of evening. No hot water. Never come across this pile of junk. It's like the budget version of a budget boiler. Branded 'FER'. Its 5 yr old and looks like its at least 15yr old due to multiple leaks/issues previously. It has a plate hex, divertor motor and hot...
  18. A

    ferroli optimax he 31c

    Have been trying to locate a loom for this bag of , The boiler has had several leaks on it the latest from the flow sensor. I have contacted parts centre and plumbase and both are unable to supply the loom that come from the flow sensor. They have contacted Ferroli who have informed them...
  19. P

    Ferroli domina 80

    Hi today i was called out to a ferolli domina 80, the boiler needed a new pcb so i replaced it ,however when i fired the boiler it would not shut off with the mechanical timeclock the boiler would just run so i replaced the clock no joy still the same. Any help would be great thanks.
  20. R

    ferroli optimax 38c woes

    Hello, I have a Ferroli Optimax 38c and since my last gas safety check by my Housing Association in 2014, the boiler fires up as if it is going to kick in and start the central heating - this occurs 2-3 times an hour for about 30/40 seconds 24/7. The thermostat is set to zero. An engineer is...
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