ecotec | Page 2

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

ecotec

Recent contents Top users
  1. R

    What is ideal pump size for Vaillant ecoTEC Plus15kW Heat Only Boiler?

    What is the ideal pump size for Vaillant ecoTEC Plus 400 15kW Heat Only Boiler? The property is a studio with 1 large room, a small kitchen and a small bathroom. I've been advised to use Grundfos UPS3 15-50/65-130.
    • raidac
    • Thread
    • boiler ecotec heat ideal pump size vaillant
    • Replies: 1
    • Forum: Boilers
  2. F

    URGENT Vaillant Ecotec Pro 24

    Vaillant Ecotec Pro 24. Hi all, we are having issues with hot water as it only stays hot for a few minutes for the taps and shower. You can visibly see the temp on the boiler drop from about 67 for 42 within a few minutes. We removed Mira thermostatic bar and the water remains hot but as soon...
  3. D

    Vaillant ecoTec fault signal

    Does the Vaillant ecoTec have an output that I can connect to an external buzzer to alert me when it’s shut down with a fault?
  4. phil hair

    ecotec pro 24 blackscreen

    ecotec pro 24, the display screen goes blank after about 10-15 seconds and boiler is completely dead. isolate it for a couple of mins and it comes back on and repeats. dont do much on these, so is it the board, or will a dodgy component do this to the board? Im thinking the fan, so pump runs...
  5. VIck982

    Vaillant 630 ecotec + VR71 + Sensohome (wired)

    So I'm looking to have this set up, I have three zones + DHW 2 of those zones are underfloor heating connected to heatmiser uh4 and then there is a radiator zone for upstairs My question is, can hot water priority be set up when there are three seperate 2 way zone valves, one for the...
  6. Scott_D

    Ecotec pcb fault???///

    Anyone had this on a Vaillant Ecotec? Hot water works fine, heating randomly works. No fault codes, works in service mode. When heating is called for the radiator symbol will show on the display pump runs then nothing happens. Eventaully it will kick in. As its not showing a fault I can only...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. A

    Vaillant Ecotec Plus Combi & UFH Control - V Smart Possible?

    Hi All Looking at having controls replaced / upgraded for a Vaillant Ecotect plus combi boiler. Currently have x2 zone valves on the heating (x1 for rads via a Honeywell wireless stat, and x1 for UFH circuits via Heatmiser stats - both wired to a Heatmiser wiring centre) I'm interested in...
  14. 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
  15. 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
  16. 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...
  17. 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...
  18. 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...
  19. 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...
  20. 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...
Back
Top