Perhaps those yet to be convinced how critical casings are should take a look at the obsolete Netaheat boiler range...a boiler implicated in the deaths and CO poisoning of several individuals. The VAILLANT 178983 PUMP is a genuine, brand new Vaillant Boiler Spares product, covered by a Vaillant Boiler Spares manufacturer's guarantee. Clearly now, I am fearing the worst that I have potentially blown my PCB by using a pump it can't handle, despite the allowance for the plug it has and my confidence that I was provided the correct part for the exact boiler. And of course doing a search for "5 wires" shows adverts for the pump stating "5 wires only". Removable side panels and push-fit flue system – For improved accessibility, ease of installation and greater installation flexibility

The cover on an Ecotec forms part of the safety system...it's correct fitment is essential to preserve the safety of the boiler....especially on a boiler that has a history of combustion related safety issues. Not what you're looking for? Try our unique Spares Finder tool or you can view all Vaillant Boiler Spares products. There has been a distinct blurring over what constitutes a combustion chamber cover on the forum over the last few years. What would my rights be now that I've fitted the part and filled it with water but was not asked or offered whether it was 3 or 5 wires?

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Are there other parts on the PCB that would prevent correct operation of the boiler if it were to match the 5 wire pump setup?

I'm going to call my supplier tomorrow for their opinion, but I'd like your input too so I am armed with as much info as possible. Prior to fitting the new pump the boiler did fire up and try to work so all was well apart from the pump being broke. If I now plug the old pump in (despite not being plumbed in) it still does the same thing. I changed the fuse on the PCB too in case that had blown during the switch on process (tried both the spares attached the the plastic casing, there's no guarantee they were both ok, but I would be confident they haven't been changed prior and so expect them to be ok). Compatible with aroTHERM air-to-water heat pump hybrid system – Making the perfect entry into renewable systemsWe certainly strive to provide the best possible customer experience. Consequently, we understand that sometimes a product may not meet your expectations or requirements. That is why we offer a comprehensive 30-day return policy to ensure your satisfaction. Please read our full Return Policy Product Information: The pump is usually located after the primary heat exchanger within your heating appliance and allows the heated water to be moved around within the closed heating system. In combi boilers , the pump is usually situated before the diverter valve to allow circulation through the DHW and central heating systems. I would not intend to wire in anything that was not meant to be, but when I have provided exact numbers requested for the boiler, been given the part which correlates to this number and the PCB has the correct plug to connect to it... I would not assume it is incorrect. Hi guys, my first post here, but I won't lie, I've used this place as a reference point so many times it's been invaluable, so I thought I'd sign up and ask a question I have. I will give as much info as possible so forgive the long read...