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ecotec

  1. Y

    Vaillant ecoTEC plus 837 R1 with persisting F75 fault

    Can someone help diagnose Vaillant ecoTEC plus 837 with persisting F75 fault please? We already replaced the pressure sensor, installed F75 kit, replaced the main heat exchanger, and the pump, and the PCB, and flushed the system and installed a filter on the return, but still sometimes we get...
  2. L

    Vaillant Ecotec F32 Fan Fault

    I have Vaillant ecotec 838 with F32 fault. I have had the fan and PCB changed but still get the fault. When the fault comes up the fan is still running!! Any ideas?
  3. W

    Vaillant Ecotec Pro 28 pressuring dropping - due to Magnaclean?

    In January 2018 we had a new diverter valve fitted to our Vaillant Ecotec Pro 28 by an official Vaillant repairman. After this we had a Magnaclean 2 fitted by our gas installer. I had checked the water pressure on the Vaillant and it appeared to be OK, around 1.1 after the installer fitted the...
  4. M

    Vaillant EcoTec 831 - no heating but hot water

    Hi I have an issue with our central heating. The hot water works fine but we have no heat coming from the radiators and yet strangely we do from the towel rails. Any ideas? So far I've tried reducing the boiler pressure by bleeding the radiator as it had gone into the red zone. It is now in...
  5. Bettyboo

    Help with repressurising Ecotec plus please

    Hi Please can you help? I have a Vaillant Ectotec plus.(4 years old) and a megaflo. For some reason it has just stopped working . The screen is flashing F22 and stating the pressure is O bar. So I have tried to repressurise it between 1 and 2 bar but I can only get it go up to 0.3. I opened up...
  6. Hobo128

    Vaillant ecotec pro 28 f28

    Been out to this boiler tonight. Open hot or ch demand boiler fires up for about 2 - 3 seconds and then goes off, repeats its self about 4 more times the locks out with f28. Ive checked the gas valve for resistance. Checked continuity of gas valve leads. Check earth to boiler. Took out spark...
  7. SlimD

    Ecotec ignition failure f28

    Hi guys, I'm after some advice from the more experienced gas guys. I've been GasSafe for just over a year - qualified via an intensive course (which I know some of you guys have a downer on) after redundancy. I make no claims of understanding everything about boilers as a lot comes with...
  8. P

    Vaillant EcoTEC control panel

    On the front control panel, below the boiler rest button, is a small plastic cover with what appears to be a comms socket behind. This is missing on my friends boiler and they have been told not to use the it. Is this not just a cover or does it really affect the boiler. Thanks in advance
  9. Hugbru

    Vaillant ecotec pro hot water

    Hi Guys I have a Vaillant eco tec pro 28 at home. Good boiler, no real problems as of yet. The only thing is when we run the hot water for the washing up etc it will go hot for a couple of minutes then go cold until I open up tap more. then go hot again. I haven't really touched up on boilers...
  10. A

    Vaillant Ecotec Plus 637 - help required no filling loop

    Hi there, I have an F22 fault on my boiler, we only moved in recently and had a radiator removed for some work to take place on the wall behind. I am presuming this has reduced the water pressure in the boiler which is why we are without central heating. The help guides and videos I have...
  11. JosieSt

    Vaillant ecoTEC Plus 415 ErP Boiler for sale - almost new

    I have a hardly used Vaillant ecoTEC Plus 415 ErP boiler for sale, with all fixtures and fittings, in perfect condition. Buy new for £800-900, or from me for £500. Photo attached. Also a hot water tank (not in new condition) for £50.
  12. Hobo128

    Vaillant ecotec plus 637 r1 low 02

    Been out today to this boiler to do an cp12. Put my anylzer in the air intake and got 13 % 02. Checked all flue seals, change heat ex seal checked checked fan ,removed main heat ex and checked for cracks and leaks. Found nothing.. im stumped . Any ideas????
  13. B

    Vaillant EcoTEC Boiler Issue

    Wondering if anyone can point me in the right direction here. My mother in law has a Vaillant EcoTEC Plus condensing boiler. When she turns the heating on or runs the hot tap the boiler goes through it’s cycle but gets stuck at S.53, and it sounds like the boiler is kettling. I understand the...
  14. sammathias

    Vaillant ecotec plus 835 low gas pressure.

    Fitted an ecotec plus 835 yesterday and was only getting 15.5mb working pressure at the gas valve. WP at the meter was 19.5mb. puzzled because there is 9m of 28mm pipe and 4m of 22mm before a stub of 15mm. Gas rate of appliance was within tolerance....15.5mb is also within tolerance but too low...
  15. sammathias

    FLUE GAS READINGS ecotec pro

    routine service today on a ecotec pro 28 approx 8 years old. Basically the boiler would only stay fired up for about 45secs before cycling on and off on max rate. This wasnt long enough for me to get an accurated fga reading. Gas rate and pressure was good. Am i right in saying could...
  16. Ted808

    F85 on brand new Vaillant, ecotec plus, 418, STRESS

    WHat is going on here? boiler is full of water- i CHECKED boiler downstairs in the kitchen, cylinder upstairs in airing cupboard- Y-plan Rads downstairs on drops, lots of air in system- seems extra difficult to bleed (being gravity) 3 DROPS - 5 rads downstairs, 3 upstairs - AV above pump...
  17. S

    ecoTEC Plus 624 and Smart stats?

    Hi all, I am hoping that someone may be able to help me out with some issues faced upon us at home. We have an ecoTEC 624 with two zone's UP and DOWN plus an albion hot water store. We have: ecoTEC Plus 624 - stored in my extension loft VR81 on the landing hard wired to; VR61 in landing...
  18. T

    HIVE + Vaillant VR66 (w/Ecotec 637 Pro)

    Hi All, I was looking to get a Hive for the plumbing system at home, but noted in the manual that it's not compatible with a VR65 Control Center. I'm using a VR66. I was just wondering if anyone could advise if it's more than likely the same (below) applies to the VR66. "Heating control...
  19. J

    Question re: Vaillant Combi (ecoTec 835 Green iQ) w/ vSmart Controls

    First post, please excuse my lack of technical knowledge and the length of my post... I recently had a plumber replace a c.30 year-old Potterton Netaheat Electronic 16/22 system boiler with a Vaillant ecoTec 835 Green iQ. The boiler is for a secondary heating system at my property and it...
  20. P

    Vaillant ecoTec Plus 624 not heating radiators, hot water fine

    We have a three year old Vaillant ecoTec Plus 624 which is producing plenty of hot water but has stopped heating the radiators and towel rails. It had been working fine before that. When the boiler is on I can hear it firing. The water pressure is 1 bar. The control unit is a wifi VR 66. I...
    • Paddyx
    • Thread
    • ecotec heating hot water plus radiators vaillant water
    • Replies: 6
    • Forum: Bathroom Advice

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