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Don't have manual for thermastat for vaillant Eco tec 838 402/06

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I have a vaillant eco tec pro boiler and the pressure guage is showing zero and boiler not working, is there a simple fis ?


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Leaking from underneath pump could it need new


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I figure however that you really wanted to know about a water pump in a vehicle. Buy a rebuilt water pump since most have been pressed together and replacing an individual O ring is often not practical.
That leak was designed in so when the inevitable happens, the coolant runs out and gets no chance to invade the oil system.

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6 Answers

Vaillant eco tec pro 28


IF the weather is extremely cold, and you're getting F28, the external pipework may be blocked with ice. Warm up the external pipes (lag them if you can) - and now see if your boiler will re-ignite.

A friend fixed our condenser boiler with this tip - hope it helps you.

Nov 14, 2008 | KDS Valiant 6380iPTD-01 Notebook

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