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Vaillant turbomax 242 1e no central heating, hot water works fine

Switching power off and on sometimes get the ch back on

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Posted on Jan 02, 2017

  • 44 Answers

SOURCE: heating, but no hot water on a vaillant turbomax 28 combi

the problem is the diverter valve unit, source a corgi engineer to fit new one, cost for valve approx 80 quid +fitting

Kindly

Richie

Posted on Dec 16, 2008

mrgrzz
  • 88 Answers

SOURCE: Vaillant turbomax 28 constant hot water problem.

got your fix, its a calcium buildup in the heat exchanger, and more than likely the rest of the unit, you will need to flush the unit with about 4 gallons of vinegar, you will need to recirculate it for about 20 mins through the unit, then flush with clean water, hook it back up, it might take a couple of mins for it to run properly, but it will, I have had the same problem with Rinnai on demand hot water systems, and it worked like a charm, check the filter thats inline as well, make sure it isnt plugged, clean if needed, also if you dont have a soft water system inplace, you might want to think about buying one and having it installed, that will reduce this from happening again for alot longer period of time, hope that helps

Posted on Jan 20, 2009

  • 234 Answers

SOURCE: no hot water

My guess would be the unit mifired and need reset.

Posted on Mar 15, 2009

  • 1 Answer

SOURCE: Vaillant boiler - heating OK, but no hot water.

Most likey problem is the diverter valve, not energising fully. This in turn will not move the little plastic lever arm that actuates the microswitch on the side, sending the signal to ignite.

You can buy a diaghram kit from most local plumb centres, you need to replace the diaghram and seals, don't forget the silicon grease to ensure the plunger doesnt stick. Kits less than a tenner.

You should have noticed before it stopped working completely the water had reduced in temperature before the weeks it failed.

To make sure it is a diverter valve fault, depress the microswitch if you can, when the hot water is flowing and hey presto the demand for hot water light should shine.

Posted on Apr 26, 2009

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Intermittent hot water.Changed diverter valve,heat exchanger,fan, PCB. Vaillant turbomax 282e But still no hot water.


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Hi

Although not a PC problem, i have had this same issue on my Vaillant Boiler, the problem you are describing is not a power flush problem, you need to clean out your exisiting diverter valve or purchase a new one

The diverter valve is repsonsible for either providing hot water or providing hot water to the central heating, when this valve gets stuck in between the symptoms you have described above occur

I would also not recommned that you do a power flush yourslef as you may end up damaging the boiler and its pump


If this has been useful please leave postive feedback/vote/testimonial - Thank You Again - shauqatm@yahoo.co.uk

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Vaillant boiler - heating OK, but no hot water.


Most likey problem is the diverter valve, not energising fully. This in turn will not move the little plastic lever arm that actuates the microswitch on the side, sending the signal to ignite.

You can buy a diaghram kit from most local plumb centres, you need to replace the diaghram and seals, don't forget the silicon grease to ensure the plunger doesnt stick. Kits less than a tenner.

You should have noticed before it stopped working completely the water had reduced in temperature before the weeks it failed.

To make sure it is a diverter valve fault, depress the microswitch if you can, when the hot water is flowing and hey presto the demand for hot water light should shine.

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No hot water


My guess would be the unit mifired and need reset.

Mar 10, 2009 | Water Heaters

1 Answer

Vaillant turbomax 28 constant hot water problem.


got your fix, its a calcium buildup in the heat exchanger, and more than likely the rest of the unit, you will need to flush the unit with about 4 gallons of vinegar, you will need to recirculate it for about 20 mins through the unit, then flush with clean water, hook it back up, it might take a couple of mins for it to run properly, but it will, I have had the same problem with Rinnai on demand hot water systems, and it worked like a charm, check the filter thats inline as well, make sure it isnt plugged, clean if needed, also if you dont have a soft water system inplace, you might want to think about buying one and having it installed, that will reduce this from happening again for alot longer period of time, hope that helps

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Clock on comi boiler


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Jan 04, 2009 | Heating & Cooling

1 Answer

Heating, but no hot water on a vaillant turbomax 28 combi


the problem is the diverter valve unit, source a corgi engineer to fit new one, cost for valve approx 80 quid +fitting

Kindly

Richie

Dec 15, 2008 | Water Heaters

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