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  1. D

    ferroli optima combi

    hi guys i dont know if anyone has had this problem, the central heating is staying on even when the room stat is off programmer off and the boiler stat turned off. i thought the problem initially was the pcb so i changed that and still no difference . im not sure where to go next any help would...
  2. G

    ferroli tempra 30 strange behaviour

    replaced venturi but boiler still only firing with case off. replaced fan assembly and all was well - for a day. Then the boiler fires up, runs for 10 mins then goes off but pump does not continue (no pump overrun) and the green demand light is not on - ie it doesn't flash green. After cooling...
  3. S

    Ferroli Modena 102 Boiler Keeps going into standby mode

    I had to change the water pump due to the connector burning out and was tripping my fuse box. The boiler now works for DHW and CH but once the demand stops, LED 4 flashes / goes into standby mode for 2 mins, then resets and all functions can be used again.... Any ideas what I should check? PCB...
    • Staffy77
    • Thread
    • boiler ferroli
    • Replies: 3
    • Forum: Boilers
  4. C

    Ferroli Modena 32c HE, changing from manual to heating controls

    boiler was controlled using +&- buttons on pcb display for CH, HW was on demand. Now want to control it using thermostats that control valves through the auxiliary connections on pcb. Is there any links inside boiler that need removed?
  5. I

    Ferroli domi compact F24b

    ive got a Ferroli domi compact F24b that i cant get the co/co2 ratio right on, the co ppm is extremely high. It has a separate air intake supply, which rises 1 metre vertically and then 5m horizontally (running along beside the flue gas exhaust pipe) which ive checked for blockages, the working...
  6. M

    Ferroli sys 10-30 loosing water pressure

    My 10 year old system is loosing water pressure. I don't detect any leaks, so far. I am hoping it is something simple. I am trying to locate where the pressure relief valve is situated, where should I be looking? The expansion vessel is behind the boiler so if that has failed I take it that...
    • Mikeycollins
    • Thread
    • ferroli pressure water
    • Replies: 1
    • Forum: Bathroom Advice
  7. M

    ferroli optimax 25c

    how do I program a new ignition pcb on the above boiler?
  8. D

    Ferroli HE31 C - intermittent hot water

    Please can anyone advise why I am getting intermittent hot water from my Ferroli HE31C combination boiler. I have noticed when calling for hot water, sometimes the boiler will fire up straight away, start to give hot water then show a D1 code indicating it has reached temperature. Sometimes if...
  9. N

    ferroli modena 102

    boiler will not turn off unless you turn it off at the main switch it seems to be bypassing the time clock and running ch all the time when h/w called for no probs i have disconnected time clock from boiler and boiler still doing the same
  10. P

    Ferroli Optimax - heating staying on permanently with NO demand

    Hi guys, I know, ferroli again(bag of s**t) seems to be operating the heating constantly but stat is not set to call, Hot water demand symbol appears to come on though, with no taps open. Any suggestions? Cheers Pooly
  11. J

    Ferroli DOMI condens HE 26c HW tank removal

    I have a Ferroli DOMI condens that supplies HW to my kitchen sink. I still have my HW tank that you have to turn on to supply HW to the bathroom. I wanted to keep my airing cupboard and as I replaced like for like this is what I ended up with. I now want to remove the boiler and associated...
  12. hammers4spanner

    Ferroli optima

    Had one of these nails early today. Initial intermittent hot water issue but then it started throwing up f40 and on occasions f47. Was banging my head as couldn't work out what they were.
  13. M

    ferroli modena not modulating

    going to an old Modena with scalding hot water when pot is turned to minimum so suspect its not modulating.....not sure this would be a thermistor problem as the boiler continually fires when tap opened....anyone experienced this and know expected voltages at gas valve??? or how to set up the...
  14. M

    Ferroli Domicondense no hot water flow at all!

    Cold water flow rate and pressure into the boiler is fine. Nothing out of any of the hot taps. There's no crud in the inlet filter. Could the hot water side of the heat ex be completely scaled up? It is a hard water area... If so, best way to clear it please? Preferably without stripping the...
    • Masood
    • Thread
    • ferroli flow hot water water
    • Replies: 2
    • Forum: Bathroom Advice
  15. P

    Ferroli(I know bag of s**t), Hot Water Fault

    Hi Guys, Another interesting one for you. So one of my customers has a Modena 102(has no plate heat ex.) which is fine on heating, fine on hot water to the kitchen(downstairs) outlet but when the bath tap(Upstairs) is run the hot water flow is having to be restricted via the tap to get any...
  16. B

    ferroli optimax 25c

    i have the above pile of tat to look at on Saturday,its not getting hot water,from memory there is no secondary(dhw) ntc on this its a 3 way valve and dhw flow switch?
  17. G

    Heating side problems with Ferroli F24 combi

    Afternoon all, My Ferroli F24 is playing up on the heating side (HW is fine); the boiler will not ignite for CH despite the room stat calling for it; I've had a good look at it, and when I disconnect the electrical connection to the flow sensor on the CH outlet pipe and call for heating, the...
  18. H

    Ferroli Modena 102 bar light on constantly

    Hi Recently my boiler has stopped firing. It was giving out intermittent hot water, then cold , then Luke warm. It was still heating the rads however. But now it's stopped working all together. When you switch on, it fires for 3 or 4 seconds then stops. The bar light is constantly on, not...
  19. U

    Ferroli Modena 102 constant bar light

    Hi Recently my boiler has stopped firing. It was giving out intermittent hot water, then cold , then Luke warm. It was still heating the rads however. But now it's stopped working all together. When you switch on, it fires for 3 or 4 seconds then stops. The bar light is...
  20. J

    Ferroli Domicompact F30b

    Any advice on this problem would be appreciated! Ferroli Domicompact F30b Combi Boiler that if the customer has the heating on, but then runs a bath the radiators get ridiculously hot. It has a dual heat exchanger so no DV which rules out any crossover there. So I'm thinking there must be a...
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