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Vaillant ecotec f79

Combi boiler with fault code f79 what is it how can it be fixed

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Posted on Jan 02, 2017

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SOURCE: lost my user manual for the vaillant boiler ecotec plus 824 R1

try to enter here all informations and you can find the manual: http://instructions-manuals.com/search.php?cmarque=VALLIANT%20&modele=ECOTEC%20PLUS%20824

Posted on Oct 27, 2009

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SOURCE: hi i get fault 28 on my vaillant boiler

F-28 is a common error for my vaillant. I have had this problem serviced at least 10 times (all under warranty). It is an ignition problem and can be connected to a number of things. I have had the starter electrodes cleaned only to later have them replaced(4 times). I just had the "panel" replaced yesterday (looks like a motherboard or electronics panel). This is the second time to have this replaced. All of these things can give you an F-28 error message. I have an atmotech pro and have had ongoing F-28 issues for two years. They are looking at venting/air issues as well to see if this is the problem. douglas

Posted on Dec 26, 2009

  • 104 Answers

SOURCE: 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.

Posted on Jan 09, 2010

  • 36 Answers

SOURCE: hot water only warm no faults showing radiators ok

you need a new dhw thermistor

Posted on Jan 24, 2010

  • 36 Answers

SOURCE: its a vaillant condensing gas boiler, it is

f:28
air in gas
gas rate low
could be gas valve faulty,ignition transformer,ignition cable.
if there is a spark then its your gas valve,if no spark then check continuity on harness and spark generator,also check earth to appliance

Posted on Jan 25, 2010

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