How to Spot a Problem with Your Commercial Boiler

24 February 2017

How to Spot a Problem with Your Commercial Boiler

Commercial boilers are complex pieces of machinery that can – and do – make mistakes. The best way to keep yours running efficiently is to get it serviced regularly, but like other machines, they do break down and develop faults.

Being able to spot problems early can lower the cost of repair bills, i.e., you can get an engineer to carry out a repair before further damage is done.

Many of the most common boiler problems require an engineer to fix them. This is a cost to your business that is in addition to the business gas rates that you already pay, but it is always better to get the engineer in sooner rather than later.

Here are some things you should look out for to help you spot problems with your commercial boiler.

No Heat

This obvious symptom could indicate complete boiler failure, although that doesn't mean it will always be expensive to fix. The first thing to check is the boiler pressure and thermostat. This may give you a better indication of the problem.

Radiators Don't Heat

This is another obvious one and usually involves a radiator that’s either completely cold, or warm at the bottom and cold on top. This can be caused by a number of reasons, but before getting an engineer, try bleeding the radiator, as this often fixes the problem. If it doesn't, your heating system might need to be flushed. This job has to be carried out by a qualified engineer.

The Flame Isn't Blue

This applies to some, but not all, gas boilers, as not all boilers have a flame. If yours does, and it’s not blue, you should call an engineer to check your system.

Boiler Switches Off Unexpectedly

This can be caused by a number of things, including a faulty pump, a problem with the thermostat, or low water pressure. An engineer will be required to properly diagnose and fix the issue.

Unusual Noise

A noisy boiler might indicate that there is air in the system, but it might also indicate other, more serious problems. Always get unusual clanks, bangs, and whistles investigate, as action might clearly prevent additional – and more expensive – problems from occurring.

The Boiler Pressure Keeps Changing

If you notice regular changes to the pressure in your boiler, you should get the problem investigated. This includes if you have to top up the water on a regular basis to restore the pressure.

Pilot Light Goes Out

There are a number of potential causes for this problem, including a broken thermocouple. The first thing to do is check the gas supply. The easiest way to do this is to see if your other gas appliances are working. If they are not, you will have to contact your gas supplier. If the other appliances are working, you can try relighting the pilot light according to the boiler manufacturer's instructions. If that doesn't work, you will have to get an engineer to look at it.

Finally, when you do need to call an engineer, make sure they are Gas Safe registered, as Gas Safe-registered engineers are the only people qualified to work on your boiler.

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