How To Troubleshoot Common Gas Boiler Problems: Boiler Repair

Learn Do-It-Yourself Tips About Gas Boiler Repair

Boiler repair help

A gas boiler is a most common appliance, such that you may find in every house, depending upon the region and locale. There are some simple troubleshooting steps that can help you identify common gas boiler problems. With sufficient knowledge in repairing a gas boiler, you do not need to spend more money in hiring technicians. You do not need to wait for the technician’s arrival and you do not need to waste time waiting either. The principles behind these tips may also be applied to combi boilers, oil boilers, condensing boilers and other types of boilers. 

Here are the basics in how to troubleshoot (and repair!) some common gas boiler problems:

1. Gas heating problems causing gas boiler repair to be needed. The inadequate boiler heating performance of your gas boiler is brought about by an abrupt alteration in inappropriate water level. Heating problems may also arise from sudden fluctuation of the boiler’s atmosphere due to the presence of mineral deposits. What should you do?

a) Check your tridicator. It measures both the temperature and pressure of your gas boiler. Water pressure below 12 psi means that more water is required. You won't do this mechanically. The pressure-lessening valve of your gas boiler will automatically do this for you. On the other hand, if your boiler does not have this kind of a valve, you may open your water valve instead to feed your boiler water up to 12 psi.

b) Mineral deposits may be expelled through the flush system of your boiler.

2. Expansion Tank Problems. Boiler repair problems in the expansion tank may be due to insufficient air and overflowing water. What should you do?

a) Determine the location of your expansion tank. Older versions of boiler systems are located in the attic, while newer versions of boiler systems are located in the ceiling.

b) Make sure that air is properly carried in the expansion tank to avoid exceeding water level pressure.

c) Compare the temperature of the tank’s top and the tank’s bottom. You may do this using your hand as the thermometer. The temperature of the tank’s bottom must be hotter. If that is not the case, you have to unplug your boiler. Next, close your water supply system. Lastly, wait for a few minutes to make the tank cooler.

d) Drain water by attaching a hose to your tank’s purge valve. On the other hand, if your boiler does not include a purge valve, you may unplug the valve that can be found between the boiler and the expansion tank. This will make the tank drain some water.

e) Turn on your boiler. Let the boiler recharge for a few hours after your boiler repair.

3. Radiators Problems and Boiler Repairs. Improper heating of the radiators is a result of a defective zone valve or locked air in either the radiator or in the line. What should you do?

a) Unlock radiator bleed valve. If you notice that the water squeezes from the radiator, close it.

b) Check if the motor or the zone valve functions properly. If these parts are not functioning properly, seek the help of a technician. Check the technicians’ service ratings in looking for the best technician. 

Now that you know the easy steps in repairing your gas boiler with these simple boiler repairs, you may now sit back and relax because you do not need to spend money for a repair’s cost when your boiler malfunctions. 


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