![]() ![]() ![]() The best thing to do if you notice issues with your central heating system is to contact a professional heating engineer. These common central heating pump problems will help you to identify the possible problem. AirlockĬentral heating pump humming noises are most commonly caused by an airlock. This is when air builds up in the pump and causes a blockage. To stop the humming and release the air, many central heating pumps have a bleed screw which can be simply turned to rid the pump of excess air. Pump shaft incorrectly installedĪ poorly installed pump will lead to a world of problems. Which is one of the many reasons why you should always hire a Gas Safe registered engineer. The pump should be fitted in a precise horizontal position. ![]()
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