Most Common Boiler Problems and Their Possible Solutions

Your boiler is the heart of your home, and it is crucial to keep it functional to its greatest extent. However, we only pay attention to our boiler when we need hot water.

A sudden boiler issue is inconvenient and never ideal.

1.    No Heating or Hot Water

There may be numerous potential causes. A broken thermostat, valve, or diaphragm. Checking the thermostat is a smart place to start. If a valve, airlock, or diaphragm is broken instead of the thermostat being the issue, you may easily replace it to get your boiler back up and running.

2.    Water Leakage

Numerous problems might cause a boiler to leak water. Finding the source of the leak is crucial to figure out the fault. Typically, it occurs when a pressure valve or pump seal and, secondly internal boiler parts are damaged. If the pressure valve caused the leak, it signifies that the boiler’s pressure was high. On the other hand, if the pump seal is the source, it must be replaced.

Occasionally, the boiler leaks from the area around the tank or pipes due to rust or poor fitting.

3.    Lower Boiler Pressure

There could be a lower pressure for several reasons, such as broker valves, water leakage and bleeding radiators. It is extremely easy to check the boiler pressure by looking at the built-in pressure gauge.

If it is lower than number 1, the water pressure is extremely low, and your boiler system is not functioning properly.

Moreover, examine your boiler for any visible leaks, and contact a professional engineer to repair your boiler instantly.

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4.    The Pilot Light Keeps Going out

The pilot light on a boiler is a small gas burner that keeps the burner lit. If it is frequently going out, the boiler won’t be able to work effectively.

It is a frequent issue brought on by a drought that blows out the flame or a buildup on the gas nozzle.

What you can do is confirm the functionality of your other gas appliances. Contact your gas supplier; if your gas supply is working properly, consider relighting the pilot by following the directions in the manual for your boiler.

On the other hand, the boiler manufacturer’s website is typically where you may get the instructions if you’ve misplaced them. This problem is more dominant in older boilers. Getting a new boiler installed can be worthwhile if the problem with your pilot light doesn’t go away.

5.    The boiler is Making Strange Noises

It is not normal for your boiler to make bizarre noises while working. However, if it’s making kettling, gurgling, whistling or loud banging noises, this could be a sign of a serious problem.

To solve the whistling issue, try bleeding your radiators as the air becomes stuck in the boiler’s pipes or the boiler itself. If the boiler is gurgling, there is likely a frozen pipe blocking the water flow someplace.

You might need to hire a gas-safe engineer to find the frozen pipe and fix the issue.

6.    Frozen Condensate Pipes

There is a condensate pipe on every boiler. This pipeline removes the boiler’s acidic wastewater, which is produced as a result of waste gas. The pipe typically empties into the drain outside.

The problem is that this pipe could freeze throughout the winter, depending on its position.

If the pipe is frozen, your boiler will signal a warning or an error code.

To fix the issue., put a hot water bottle, a warm towel, or a heating pack on the frozen pipes. Moreover, you can also spray the pipe with hot water. Reset the boiler to restart the fire once the pipe has been repaired.


7.    Radiators are cold

You might need to bleed the radiator if only the bottom of it is heating up. Although this is quite simple and doesn’t need an expert, contact a professional if you don’t feel confident doing it yourself.

Your radiators may need to be balanced if some aren’t heating up. You can also complete this without an engineer’s assistance, but only if you are comfortable doing so. Each radiator in your home needs to have its valves adjusted to receive enough hot water to operate correctly.

8.    Thermostat Issues

The thermostat may occasionally malfunction, incredibly when faulty. A malfunctioning thermostat may wrongly detect the temperature in your room and communicate incorrect information to the central unit.

Before calling any specialist, try troubleshooting your thermostat. Please ensure the power supply is turned on and operational by checking it. Furthermore, check the clock and timer settings on the gadget to ensure they are accurate.

9.    Boiler Constantly Turns Off Itself

Numerous factors, including poor water pressure, are to blame for this issue. The entire house lacks temperature control when the heater shuts off.

Removing the air from the system, pressurising it again, or thawing the condensed pipe are a few solutions. If you’re hesitant to do it yourself, you can call us at any time to get it done by experts.