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  1. C

    baxi duotec e50 boiler error

    Hi, I'm hoping someone here may be able to help me out with an issue I have with my baxi duotec boiler. Basically, the hot water temperature has been fluctuating quite alot, dropping in temp then raising again whilst showering. I have had an engineer out who has changed the thermistor, but I am...
  2. K

    Baxi duotec not firing up for water/heating

    Hello, hopefully posting this in the right place. Have a Baxi duo-tec boiler that is not firing up for water or heating. The green 'hot water' led lights, showing that there is demand for hot water when the hot tap is turned on, but boiler does not even attempt to fire up. Heating initially...
  3. G

    Baxi duotec 28 HE A- no heating

    Hi guys, hopefully somebody can help because I'm at my wits end here. I have a Baxi duotec 28 HE A with no heating but hot water is fine. There are no visible leaks in or outside the boiler and it has been regularly serviced.The honeywell stat and relay module have been replaced, but still no...
  4. Bottom

    Leaking Overflow from Baxi DuoTec Combi 28 HE A. is it faulty PRV ?

    Leaking Overflow from Baxi DuoTec Combi 28 HE A. Is it a faulty PRV ? Pressure gauge is showing zero so no central heating or hot water. When I try to re-pressurise by opening the fill valve, the gauge will only rise to just over one bar and the CH will then work. BUT... all the water rushes...
  5. Bottom

    Baxi DuoTec Combi 28 HE A - No central heating

    The central heating on my Baxi DuoTec Combi 28 HE A has stopped working but the hot water is fine. I have also discovered a leak from somewhere on the lower isolation valve to the Fernox TF1 Compact filter, it may just need tightening up. I'm guessing that it could be the diverter valve but...
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    • baxi central central heating combi duotec heating no central heating
    • Replies: 7
    • Forum: Central Heating Forum
  6. R

    BAXI DUOTEC COMBI 24 HE A. Diverter issue. Motor, Sensor or Valve

    Hello all I have a BAXI DUOTEC COMBI 24 HE A. I suspect a diverter issue. Symptoms are hot water but cold rads. No fault codes to report. At least nothing that begins with the letter "E". No fuse issues. There is a CENTER wifi stat involved but I am satisfied that's functioing ok. Been...
  7. S

    Baxi DuoTec driving us NUTS.

    Our Baxi DuoTec is driving me and our GS Engineer nuts. The pressure has been dropping right off ( down to the stop) several times per day over the past 6-8 weeks and I've had to top it up each time. The ECV is ok, the PRV is ok, we suspect it's a underfloor leak on the ground floor, the floor...
  8. M

    Baxi DuoTec 28 HE Expansion Vessel Issue.

    Hi All I have an issue with the boiler building pressure quickly to over 3 Bar and the safety valve kicking in. The expansion vessel has been re pressurised and holds air. would/could it be that the micro bore wet pipe is blocked?
  9. B

    New Baxi duotec boiler 28 fitted. Shower less hot and less powerful.

    A new Baxi duotec 28 was fitted in Dec 2017 and the installer has just told me today the old boiler had water heating of 3.1 kW. Is this why my shower is less powerful and less hot since new boiler has been fitted? I have a 4 bed house with 10 radiators. He recommended Baxi duotec 24 and the...
  10. G

    Baxi duotec 24 lpg fault E130

    hi all I have an intermittent fault with a Baxi duotec 24kw combi, fault code E130 (flue NTC sensor) I have replace this sensor after doing an resistance check on it (it checked out fine but changed it anyway) and also doing an resistance check on the ch NTC sensor (this too was fine) I’ve just...
  11. Lambed84

    Baxi DuoTec fault codes

    Anyone know what the fault code e166 relates to on the above boiler? Thanx in advance gents
  12. T

    BAXI DuoTec 2 33GA - Loud boom in the morning

    Hi all, I moved into a new build Nov 2014 and it was fitted with a BAXI DuoTec 2 33GA combi. From day 1 I've noticed that it has been displaying what I understand to be known as "explosive ignition". Baxi have been out numerous times to replace various bits and pieces under warranty but they...
  13. A

    Baxi duotec 40 flow restrictor on mains in

    Hi - just installing my own Baxi duo tec 40 as have had new water mains supply and water pressure is very powerful. On installing I noticed in the manual it says there is a flow restrictor built into the cold water inlet tail nut which connects onto the jig - my question is why would they...
  14. M

    Duotec 40kw combi E168

    I have a customer with a Duotec 40kw combi which is intermittently locking on with an E168 error, is this always the pcb or anything else to check?
  15. M

    baxi duotec

    Hi, another baxi question, fitted an A rated grundfos pump, boiler was working fine but now and again after fitting this pump i get E168, tried on setting 1 and 2, still randomly get this error.. once i reset its back to normal... Dont they like the lower Wattage ? The other change is balancing...
  16. jonnyswamp

    Main to a Duotec

    Can an existing flue from a Main 24he be used on a new Duotec I know the position is different, but this isn't an issue BTW, flue is good Sec hex leaked condense on to primary and rotted it, £500 + for both hexs plus labour New boiler time
  17. M

    Baxi duotec 24HE,A

    Hi. I'm having an issue with high CO. Into the thousands ppm. The gas supply is 22mm 20mb. New gas valve. Adjusting it only makes the CO worse. The flue is good and intact. Any ideas guys ?
  18. A

    Baxi duotec 33

    Hi anybody with experience with these boilers? What common problems are there? Got one to service which is 7 years old and never bin serviced. Was thinking new electrodes and burner door seal..... Any other common things need replacement? Also been told diverter makes clicking noises when...
  19. stani

    Baxi duotec E133

    I have tried searching for threads regarding this fault but keep coming up with closed threads, can anyone point me in the right direction with this appliance, it's my bosses old house which he now let's, don't normally do faults but because it's his ,he sent me out. cheers Stani
  20. B

    baxi duotec hea

    Alright guys? There is 2 different part numbers for the pcb for these, whats the difference, if any? Cheers :)
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