Ecotec pro 28R1 no hot water
- Thread starter ollski
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Have you checked the impellor sensor ? do you get any display activation when the hot tap is opened ? if not I would be looking at that
yes I know but vaillant call it an impellor sensor, that would be my first check
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Check D36 when your running the tap and see if its picking up the flow signal on there first.
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Must be the harness then. Not common but there is nothing else involved in the proccess on that one. like you say the Pro doesnt have a HW NTC only a Preheat NTC.
Have seen it once or twice where there has been a drip or leak in past got onto the 3 pin plug going onto the Aquasensor with ever so slight corrosion and thats been enough. Seen it quite a few times on the Betacom 2 that runs essentially the same system but the aquasensor is located at the back of the boiler and if there is flue water ingress this happens.
Have seen it once or twice where there has been a drip or leak in past got onto the 3 pin plug going onto the Aquasensor with ever so slight corrosion and thats been enough. Seen it quite a few times on the Betacom 2 that runs essentially the same system but the aquasensor is located at the back of the boiler and if there is flue water ingress this happens.
Well it’s an ecotec so it’s definitely had water leaking inside. I would have thought the connector would be clear of it but the problem only seems to have come up since the last guy replaced rhe diverter so maybe he drenched it!
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Bingo (or trapped the wire to aquasensor while he was working in there)
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