Vaillant heating does not start

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If you call a Vaillant heater your own, you may be able to help yourself in the event of some malfunctions help if the reason why it no longer starts has nothing to do with gas-carrying components Has. In the case of many "failure symptoms", the problem lies far away from the gas supply and can possibly be rectified by an experienced do-it-yourselfer.

Repairs to gas heating systems belong in the hands of specialists.
Repairs to gas heating systems belong in the hands of specialists.

When your Vaillant thermal baths no longer start

  • The failure of a Vaillant gas boiler can always have several causes, which you must first investigate in order to be able to determine whether it could be your responsibility to remedy the fault.
  • It may well be that, for example, a clogged chimney, a burnt thermocouple, is not enough water or a stuck water pump caused the heater no longer starts for safety reasons.
  • If the water level is too low, it can certainly be remedied quite easily. The respective operating instructions should be able to give you precise information here. However, the stuck pump is a problem that affects all series and can possibly be remedied in a few simple steps.

Restore the mobility of the pump

  1. Make sure that the power supply to the electrical elements of your thermal bath is interrupted.
  2. Use your device description to find the location of the pump.
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  4. Remove the screw in the field of view.
  5. You can now see the possibly stuck shaft through the opening that has been created.
  6. Now try to turn it with a suitable screwdriver. This may well require some gentle force.
  7. If the effort required for this is noticeably less, you may have found the cause of the failure of your Vaillant thermal bath and remedied it.
  8. The test run will now give you the knowledge as to whether it is time to use a specialist or whether you have managed to get the heat source in your apartment going again on your own.

A heater always fails at the wrong time

  • It is completely normal that the failure of the heating system is only noticed when you need it most urgently - during the heating season. None of the major manufacturers of gas heating systems, such as Vaillant, Buderus or Junkers, can, with all due care, completely rule out operational wear and tear. Since this then becomes a problem for many people at the same time, a specialist will not be able to take care of your request immediately, but you will have to reckon with a certain waiting time.
  • In most cases you will unfortunately have to come to terms with this, because there are no precise provisions for everything that can be associated with gas for nothing. It is also in your own interest that you should not use any heating systems that use gas as an energy source Attempts to repair, interventions in the area of ​​gas pipes or seals of any kind include.
  • Check your heating system before everyone else does. Put your heating into operation for a short time before the cold spell so that you can find out beforehand whether it will start or fail. So you will surely get help much faster than during the main season of the gas and water plumbers.

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