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How to Fix Some Common Central Heating System Problems?

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How to Fix Some Common Central Heating System Problems?

Central heating has become an integral part of every house. It provides comfort and maintains a healthy environment inside the house. If it stops working properly due to any reason, it can render the environment very unpleasant for the occupants. They often start experiencing problems when they are restarted at the start of the season.

However, most of the problems that occur are minor and can be fixed with little guidance. In this blog, we will explain some of the general radiator and central heating problems that can be fixed without hiring a heating engineer.

When Radiator is Cold at the Top or Has Cold Patches

This problem occurs quite often. It happens because there might be air trapped in the radiator, or it is blocked due to sludge caused by the corrosion of metal.

How to Fix It?

Luckily, this is a minor problem and can be fixed very easily by following methods:

  • If you find air trapped in the radiator, all you need to do is to locate the bleed of the radiator, open it and release the air from the radiator.
  • If there is sludge in your radiator, you will need to remove the radiator from its place and flush it with water.

When Heating System is not Providing any Heat:

If your heating system is on but not providing any heat, that can mean there is a major problem in your heating system. This can be caused by multiple reasons, and you can try a few things to fix the problem.

How to Fix It?

  • Check the fuse of the system. If it has blown, your heating system will not work unless you install a new one.
  • Check if the pilot light of the boiler is on. If not, then relight and wait some time to get the system heated.
  • This can also be caused due to a faulty pump. Restart your pump manually and see if the problem is resolved.
  • There can also be a frozen pipe that is interfering with your heating system.
  • If the system is still not producing heat, it is better to engage a professional to help you with your problem.

If only the Radiators Downstairs are Cold

This problem can occur frequently when a heating system has remained off for several months. This problem is usually caused because of the heating pump.

How to Fix It?

This problem can be easily fixed by following these instructions:

  • Find the central heating pump and tap it with a hammer or mallet to kick-start it.
  • If the spindle of the pump is not moving, try to start the pump manually with a handle or by inserting a screwdriver into the shaft.
  • Increase the pressure settings for the central heating pump and see if this work.
  • If the problem persists, remove the pump and flush it with clean water without immersing it in the water and then repeat the steps.

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When the Boiler is Making Strange Noises:

If your boiler is making strange sounds like banging and hissing, that is something to worry about because these problems do not occur normally and can be potentially dangerous. This can also indicate that the boiler is getting overheated.

How to Fix It?

If the Boiler is Making a Humming Sound:

  • Start by turning your radiator off and on again, if the problem is still there, that means your pilot light is fine, and the problem can be due to the trapped air.
  • Find the bleed screw and remove excess air from the boiler.

If the Boiler is Making a Hissing Sound:

The hissing sound means the boiler is not getting sufficient water supply.

  • Check the supply system and find out if there is any pipe blocked due to sludge or frozen water.
  • If the problem persists, you may need to hire a professional technician to take care of your problem.

When Your Thermostat Controls Don’t Work:

If you have problems with temperature or can’t change the settings, your thermostat might be to blame.

How to Fix It?

  • Try resetting the thermostat and see if that fixes the problem.
  • Try changing the batteries; in the case of a digital thermostat,
  • If the problem persists, reset the thermostat to the factory settings.
  • If none of the above resolves the problem, there may be a fried circuit that is causing this problem. Hire an experienced professional to resolve the problem.

When the Fan Stops Working:

Many factors cause your heating system’s fan to stop working. However, you can follow some easy steps that can troubleshoot the fan.

How to Fix It?

  • First, check the thermostat settings to see if the fan is on or not.
  • Check the air filter to make sure that it is not choked with dirt. A choked filter can make your fan stop working.
  • See if the circuit breakers are closed.
  • If these steps don’t fix your problem, hire a professional to find and fix the problem