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ecotec

  1. 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...
  2. 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.
  3. 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????
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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
  12. S

    Vaillant ecoTEC Pro 28 changing AAV

    My AAV is leaking, it is the type with an o ring around the body that is fixed in to the pump with the u shaped pin. I know that other types have a shut of valve allowing the part to be changed without draining the system, I'm thinking mine will need draining to change it? Could anyone advise...
  13. sammathias

    Vaillant ecotec pro 28 HOT water too hot.

    Routine service today on an ecotec pro 28. Everything went fine but i noticed the customer had his hot water set at 40 degrees on the boiler...but when running the hot tap it was coming out at 69 degrees..even in p.01. i looked at the diagnostic codes and D.003 was set at -99 degrees and D.006...
  14. R

    Vaillant ecotec green iq 843 or unvented?

    Hello all. ..first post so please forgive the lack of technical knowledge. I'm looking at replacing an old potterton 100e regular boiler connected to a unvented traditional system. Can't decide between the above high powered combi or going unvented with a ecotec 637 system boiler and 210...
    • robwelsh458
    • Thread
    • ecotec unvented vaillant
    • Replies: 20
    • Forum: UK Plumbers Forums
  15. P

    Ecotec 637 System Boiler - Is this correct behaviour?

    Hi everybody, I have just had an Ecotec 637 system boiler with Unistor 300 tank installed. These are controlled using the Evohome system although I haven't yet bought the TRV heads so it is just working as a single thermostat control. Everything is working correctly in that the thermostat is...
  16. S

    Vaillant ecotec plus

    Didn't have boiler manual fault code is S97 Water sensor ? Hot water is warm and not hot Heating is ok
  17. phil hair

    vaillant ecotec pro 28 diverter valve

    hi, does anybody know if i have to replace the whole cartridge or just change the o'rings on the original cartridge for the vaillant ecotec pro 28. if i can get away with the o'rings do you know what size they are? many thanks............phil
  18. Y

    Vaillant ecotec 624 slowly losing pressure

    Hi All My Vaillant 624 has been slowly losing pressure over 2 weeks. I filled up to 1.5 bars. when the heating turned on it increased to 2.0 bars. I then noticed over a period of 2 weeks or so it has slowly dropped to 0.9 bars. There is no obvious leaks around the radiator pipes. I bled all...
  19. Y

    Vaillant ecotec 624 loses pressure slowly

    Hi All My Vaillant 624 has been slowly losing pressure over 2 weeks. I filled up to 1.5 bars. when the heating turned on it increased to 2.0 bars. I then noticed over a perios of 2 weeks or so it has slowly dropped to 0.9 bars. There is no obvious leaks around the radiator pipes. I bled all...
  20. A

    Vaillant ecotec plus installed and one freezing radiator

    Good morning, Can someone help me please? I've had my kitchen extended and was advised by my builder to buy a Vaillant ecotec plus boiler as it would be able to accomodate at least 20 radiators (I now have 7 and a heated towel rail). The plumber came in and attached a hose pipe to the radiator...
    • And3
    • Thread
    • ecotec plus radiator vaillant
    • Replies: 15
    • Forum: UK Plumbers Forums

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