ecotec

Ecotec (capitalized ECOTEC, from 'Emissions Control Optimization TEChnology') is a General Motors (GM) and Opel Automobile GmbH (Opel) trademark that refers to a series of emissions technologies that were implemented throughout a range of GM engines. ECOTEC can refer to the following diesel and petrol engines originally produced by General Motors:

Ecotec Family 0 - straight-four DOHC engines produced by Adam Opel AG and GM Powertrain US.
Ecotec Family 1 - straight-four SOHC/DOHC engines produced by Adam Opel AG, GM Korea, and GM do Brasil.
Ecotec Family II - straight-four SOHC/DOHC engines produced by Adam Opel AG, Holden, and GM do Brasil.
Ecotec L850 - straight-four all-aluminium DOHC engines produced by Adam Opel AG, GM Powertrain US, and Saab Automobile Powertrain AB.
Ecotec V6 - a version of the Series II 3800 V6 engine, produced by the Holden Engine Company between 1995 and 2004.
CDTI (Common Rail Diesel Turbo Intercooled) Ecotec - common rail diesel engines for Opel/Vauxhall cars:
originally designed and produced by Fiat (MultiJet) and currently produced by Adam Opel AG;
produced by Isuzu (Circle L).
VCDi Ecotec - common rail diesel engines for Chevrolet and Holden cars, produced by GM Korea (a licensed VM Motori RA 420 SOHC and Family Z).
DTI (Diesel Turbo Intercooled) Ecotec - diesel engines for use in Opel/Vauxhall cars, produced by Isuzu (Circle L)
SIDI (Spark Ignition Direct Injection) Ecotec - petrol Medium Gasoline Engine produced by Adam Opel AG
Ecotec3 is the name used on General Motors' Small Block Gen 5 Engines. All include direct injection, cylinder deactivation and continuously variable valve timing, either in V6 form of 4.3L or V8 form of either 5.3 or 6.2 liters.In addition, the trademark ECOTEC is also being used on Opel automobiles which are powered by the following engines produced by PSA PowerTrain:

EB: ECOTEC trademark is used on the Opel Crossland X and Opel Grandland X equipped with the 110 hp variant (Crossland X) and 130 hp variant (Grandland X) of PSA's EB petrol engine. Lower powered variants of this engine lack an engine designation, while higher powered variants (for Crossland X) are being designated as TURBO.

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  1. J

    Ecotec Plus 831 turning on randomly

    Morning all, My Vallient Ecotec Plus 831 is stored in the loft and is connected to Hive. It is coming on randomly at various times of the day, but particularly middle of the night, and staying on until I manually turn the boiler off. Hive schedule is switched off but still comes on. Had an...
  2. D

    Why does water pressure gradulally rise Valliant Ecotec 38

    Hi all, My pressure is stable at 1.5 when the boiler is off, but if I switch it on, the pressure rises as expected, but once switched off it will only drop back down to 1.6. This happens exach time the heating is switched on so eventually it gradually rises to above 2 bar and I have to drain...
  3. P

    Working gas pressure on Vaillant ecotec 630

    British Gas servicing the above boiler ramped up the boiler to maximum in the installer menu to do flue gas analysis. They also measured the working gas pressure on the gas valve test nipple. This fell to 8mbar on maximum and 17mbar on high setting. They then removed the isolation valve under...
  4. MilkyBadger

    Why Does Vaillant EcoTec 832 Boiler Only Heat in Chimney Sweep Mode?

    Hello everyone, I'm facing an issue with my Vaillant EcoTec 832 boiler and would greatly appreciate your expert advice. The Problem: Heating Not Working Normally. When I turn on the heating, it doesn’t start. However, I still receive hot water, suggesting the boiler does work in some...
  5. papachumba

    Acton W3 Servicing the Ariston Megaflo Cylinder & Vailant Ecotec 428

    Hi all, need someone to do my annual gas service and issue me a domestic gas safety certificate. In addition the megaflow cylinder needs checking and anti corrosion electrode replacement (have the part). In addition some of the honeywell motorised valves need replacement.
  6. papachumba

    Acton W3 Servicing the Ariston Megaflow Cylinder & Vailant Ecotec 428

    Hi all, need someone to do my annual gas service and issue me a domestic gas safety certificate. In addition the megaflow cylinder needs checking and anti corrosion electrode replacement (have the part). In addition some of the honeywell motorised valves need replacement.
  7. T

    Vaillant Ecotec 824 R1 - random noise when heating ON

    Hi I'm dealing with Vaillant Ecotec 824 R1 in one flat. The boiler make a very loud noise when central heating is on - this is random and occurs mostly at night. I'm sharing video showing the problem: So far we changed: 1. Expansion vessel 2. Pump 3. Water pressure gauge - analogue sensor...
  8. Z

    38Kw EcoTec 22mm or 28mm F/R?

    I'm moving over to a sealed system on my EcoTec 38kw boiler. The old flow and return were in 28mm which was there long before the Vailant was installed. I'm running 10 rads with a small UFH circuit and unvented cylinder. Could i get away with replacing the 28mm to 22mm instead on the...
  9. McDoosh

    Vaillant EcoTec - 10mm pipework to radiators?

    Hi, just about to bite the bulklet on a new boiler and radiators, Vaillant EcoTec Plus 32kW. Is 10mm pipework to the radiators sufficient? Thanks
  10. P

    Hi all, how to convert to lpg the vaillant ecotec plus 618-2018

    Hi all, how to convert to lpg the vaillant ecotec plus 618-2018
  11. R

    Installing a new pump for Vaillant ecoTEC Plus 400 15kW. West London

    Removing pump and installing a new pump for Vaillant ecoTEC Plus 400 15kW Heat Only Boiler. Connecting the pump to the boiler and completing all wiring for the thermostat and consumer heating controller.
  12. 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...
  13. 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?
  14. 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...
  15. 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...
  16. 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...
  17. 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...
  18. 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...
  19. 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
  20. 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
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