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Loss of hot water

I have a problem with my vokera boiler where the pressure gauge keeps going up and down leaving me with no hot water

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Usually with a loss of hot water on a boiler and the heating still works ok means the heat exchanger is blocked and needs replacing or cleaning. it could also be a faulty sensor.

Posted on Mar 26, 2009

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Combi boiler will not fire up on heating or hot water. pressure gauge reads approx 2.1 bar red light lit on panel


Hello
The water pressure should be 15 to 12 psi.If your at 2.1 there is a problem with your auto fill valve.

Which means the boiler is shut down on low water.

The auto fill valve is connected to your incoming cold water from the home,shut it off and check the screen inside for dirt or rust,you may need to have another one installed.

Feb 28, 2011 | Heating & Cooling

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There was no hot water so repressurised as the pressure wass low the red light remained on but occassionally when turn hot tap on the green light comes on there is hot water then it shuts down and red...


These sure were not out for long. The bright red button is a pressure release valve which could be faulty hence allowing water to bypass out of the system and not having hot water. Try strapping a bag around the pipe that goes outside and see if it fills with water. To top up your system look on the pipes just below the boiler. There should be a cold filling loop or a connection for one. If not get one from a plumber and ask them how to fill system up, its straight forward enough and your problem should be fixed with this info

let me know if you have further questions

my best to you

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No heating and no hot water, my boiler won't fire up


If there is a hi-limit switch, maybe it's open, reset the switch, and monitor the temperature, if the temp. increases over the set temp. replace stat, and clean lime off from the tank, if does not have a filtering system

Apr 21, 2009 | Heating & Cooling

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Vokera option combi boiler seems to increase in pressure until it opens the safety vave ,only when heating is on !


check to see if the expansion tank is completely full of water or isolated from the rest for the system. If full it needs replacing, if isolated (valve turned off to it) then turn it on. When a hot water heating system cannot allow for expansion then the pressure will increase when running until the saftey opens.

Nov 26, 2008 | Heating & Cooling

1 Answer

My Vokera Maxin 24e keeps tripping out


my vokera maxin 24e. it works for a while.. if i leave it on a timer its as if it cuts out and the red light on the front of the boiler goes on. i can press it and fire my boiler back up but not always its as if it heats up. obviusly a safety measure. any idea what part/parts i need to fix it??? help anyone

Nov 09, 2008 | Heating & Cooling

1 Answer

My vokera linea 7 boiler is loosing water through over flow pipe while heating up to temperature


The pipe you call over flow. This would be the P/R valve and is set to relieve pressure in system. The first thing that needs to be checked - the expansion tank two types of tanks one would be what is know as a extrol tank, Most likey just hanging off pipe, it has air pressure on one side of rubber dia. and boiler water on other. The 2nd type is just a tank at ceiling height (most of the time). You would see a hose bib off the one end. Tank holds some water but must have air for boiler water to push into as it is heated. If you have the first tank it should be replaced. The 2nd type needs to be drained of all water. Shut off feed line to tank hook up short hose and drain into a bucket. if water stops you must break the vacuum raise hose above tank air should go into tank. repete draining till all water is out of tank. Some tanks have a way to open a valve to let air in as you drain if so use it. When all water is out of tank valve off everything (no air should leave tank) Open back up to system now you should have aplace for the water to expained to.

Nov 04, 2008 | Heating & Cooling

1 Answer

Bled my radiators yesterday, and now the water pressure gauge on the bioler is at zero - it wont start up below a pressure of 0.5. I suspect the boiler is air-locked. Any ideas on how to bleed it?. Its a...


You boiler is more than likely low on water. There is normally an automatic water feed. When you bleed a system the pressure naturally drops but is compensated by additional water feed into system. You have a problem in the pressure make-up water feed to your system.

May 11, 2008 | Heating & Cooling

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