Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

ecotec

  1. J

    Vaillant EcoTEC Pro 28 - radiator flow temp locked to 50 degrees

    Hello all, I’m looking for some advice on my Vaillant boiler, which is controlled by my Hive thermostat. I have set the radiator flow temperature to 75 degrees on the boiler control panel, but the actual temperature never gets hotter than 50. I have done some checks, and believe I have found...
  2. D

    Vaillant EcoTec Exclusive 365/5-7

    My boiler is in continuos S40 mode. A reset fixes for a while and then it comes back. There are no f codes and the only other possible problem is the diagnostic code 118 reports 8 which is the CO2 sensor . The manual says that this number means Standy Reference resistance not OK . It has been...
  3. J

    Vaillant Ecotec Exclusive Green IQ 835 combi modulation problem

    Hello, We got a Vaillant Ecotec Exclusive Green IQ 835 combi boiler in November 2021 as we wanted the most efficient boiler that modulated really well, especially for heating. Two weeks after the installation, the heating engineer needed to recalibrate the boiler and after that we started...
  4. J

    Vailant ecotec pro 28 pressure

    Hello. I’ve lived in the property for 4 years and anytime the pressure got low (0.8 bar) I would use the fill taps to release more water into the system. Ever since British Gas did their annual boiler check about 3 months ago, I’ve had to do this too up method more and more. My pressure is now...
  5. A

    Vaillant EcoTec pro 28 - Slow CH start up

    Hello all, Im wondering if you can help? Ive got a Vaillant Ecotech Pro 28 which was installed 9 years back and has worked like a dream all its life, however this Autumn I've unfortunately started to face issues with it. I've noticed that its taking 10-15 mins for the CH to kick in when...
  6. M

    Valliant ecotec plus 415 hot water problem

    Basically, i have a hot water tank up in the loft when its summer the tank gets hot, and i have hot water from the taps. However during colder months i try and turn the water temp on the boiler to the max, i heat it up for 2 hours and it does nothing. However when the heating knob is turned up...
  7. P

    Is there an easy fix for broken knob on Valliant Ecotec Pro 28?

    The bloomin' heating temperature knob has broken (don't ask me how!) and so we can not adjust or turn on the heating Is there any chance of a replacement and how hard to fit? Its an old model unfortunately See below
  8. Peter Mago

    How to add water to system- Vaillant Ecotec Pro

    How do I let water into the system? Tap is connected to water tank and there is a black inlet connected to the water tank? Thanks for any answers
  9. V

    Vaillant Ecotec plus 428 No heating

    Hi We've got a Vaillant ecotec plus 428 that doesn't seem to want to supply any heat to the radiators despite the hot water working just fine. Of some importance (I think) is that there is no radiator symbol displayed on the boiler screen, only a tap. We have a wireless thermostat (Altech...
  10. P

    Vaillant Ecotec plus 428 overactive. Keeps running in S7 and S8 mode.

    I have an open vented central heating system with a hot water tank. Both heating and hot water circuits have a motorised valve controlled by a timer. The timer for the central heating is always in the “on” position and is governed by a room thermostat. The boiler is a Vaillant Ecotec Plus 428...
  11. voyagerxp

    How To Pressurise An Ecotec Sustain 28 R1 Boiler

    As the title say can you advise me on how to pressurise an Ecotec Sustain 28 R1 boiler. The old boiler at my old property was an older model and when istalled the guy showed me how to do it.It was simply turn one tap and turn the other until pressure was set then turn the taps back to default...
  12. K

    Vaillant ecoTec Sustain and an Automatic Bypass

    Hello all I hope you are well. This is my first Post here so..... I recently had a Vaillant ecoTec Sustain (Combi) installed under the ECO Grant Scheme to replace a 14 Year Old Ideal ISAR HE24. When the Ideal was installed in 2008 for my Mum there was also an Automatic Bypass (ABBV1) fitted...
  13. U

    New Ecotec 832 Pro won't stop heating!

    Our recently installed (last week) Vaillant Ecotech 832 Plus does its own thing and heats constantly regardless of the controller mode temperature, manual ON/OFF controls etc..We have the Honeywell T3 wireless controller with wall unit, system heats the radiators even when the controller is...
  14. O

    Vaillant Ecotec 630 plus replacement

    I have a Vaillant Ecotec 630 Plus that was installed in 2007 that is connected to a 300 litre unvented tank. This provides our hot water and feeds 4 floors of underfloor heating. I am looking to replace both the boiler and tank and see they still produce this boiler. I assume the newest models...
  15. N

    No hot water - Intermittent - ecoTec Plus

    Woke this morning to no hot water but heating was working fine. Checked the forums and checked all the common problems: Water and boiler pressure both ok Timer ok (hot water set to all day) No leaks and condenser pipe not frozen No error codes Tried running hot water with heating turned off...
  16. J

    Vaillant EcoTEC 831 issue

    Hi, looking for some help/advice if possible. Mum has a Vaillant EcTEC 831 ( VUW GB316/3-5 ) and the pump is constantly running. It was serviced in Sept when it started? Normally itwoulonly run when heating or hot water was required. I have managed to turn off the Comfot Mode but am unable to...
  17. J

    Valiant Ecotec Plus 938 A - Losing pressure (losing my mind!)

    Good afternoon. I am hoping someone may be able to help with an issue I have on a Valiant Ecotec Plus 938 boiler. Fitted approx 4 years ago, the boiler has been suffering from the loss of pressure on the system (down to 0) at least once a day, typically when it is not in use. I have so far; 1...
  18. S

    Vaillant Ecotec Plus 832 Expansion Vessel

    Hi Guys, Had a quick question regarding expansion vessel on a Vaillant Ecotec Plus 832. Was servicing the boiler and upon attaching hand pump to vessle after having drained the boiler, returns and flows isolated and drain off on boiler open, the vessle showed 1 bar charge. Was wondering why...
  19. S

    Valiant ecotec pro 24

    Anyone know why my diverter valve motor hardly moves have tryed a new one and still the same (Valiant ecotecpro 24)
  20. B

    Vaillant ecoTec plus 637 System boiler control options

    Vaillant ecoTec plus 637 and gledhill 250 indirect tank control options Hi, I am in the process of renovating an old farm house. I have been advised to have installed the Vaillant ecoTec plus 637 system boiler with a gledhill 250l indirect tank. I met with the heating engineers yesterday as...

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Featured Content

Back
Top