{"id":3064,"date":"2026-06-27T01:01:47","date_gmt":"2026-06-26T17:01:47","guid":{"rendered":"http:\/\/www.meovat9.com\/blog\/?p=3064"},"modified":"2026-06-27T01:01:47","modified_gmt":"2026-06-26T17:01:47","slug":"how-to-check-if-the-compressor-of-a-monoblock-for-undercounter-fridge-is-working-4ec3-ba8de4","status":"publish","type":"post","link":"http:\/\/www.meovat9.com\/blog\/2026\/06\/27\/how-to-check-if-the-compressor-of-a-monoblock-for-undercounter-fridge-is-working-4ec3-ba8de4\/","title":{"rendered":"How to check if the compressor of a monoblock for undercounter fridge is working?"},"content":{"rendered":"<p>As a long &#8211; standing supplier of monoblock for undercounter fridges, I&#8217;ve encountered numerous inquiries from customers about how to determine if the compressor of their undercounter fridge monoblock is functioning properly. In this blog, I&#8217;ll share some practical methods and insights based on my years of experience in the industry. <a href=\"https:\/\/www.gold-fly.com\/refrigeration-unit\/monoblock-for-undercounter-fridge\/\">Monoblock for Undercounter Fridge<\/a><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.gold-fly.com\/uploads\/43480\/small\/cooler-evaporator-unitef118.jpg\"><\/p>\n<h3>Understanding the Compressor&#8217;s Role<\/h3>\n<p>Before delving into the checking process, it&#8217;s essential to understand the compressor&#8217;s role in a monoblock for an undercounter fridge. The compressor is the heart of the refrigeration system. It compresses the refrigerant gas, raising its pressure and temperature. This high &#8211; pressure gas then flows through the condenser, where it releases heat and condenses into a liquid. The liquid refrigerant then passes through an expansion valve, which reduces its pressure and temperature, and finally enters the evaporator. In the evaporator, the refrigerant absorbs heat from the inside of the fridge, cooling the interior.<\/p>\n<h3>Visual Inspection<\/h3>\n<p>The first step in checking the compressor is a visual inspection. Start by unplugging the fridge from the power source to ensure your safety. Remove the back panel of the monoblock to access the compressor.<\/p>\n<ul>\n<li><strong>Physical Damage<\/strong>: Look for any signs of physical damage to the compressor. This could include dents, cracks, or corrosion. Physical damage can cause the compressor to malfunction. For example, a dent in the compressor&#8217;s casing might affect its internal components, leading to improper compression of the refrigerant.<\/li>\n<li><strong>Loose Connections<\/strong>: Check all the electrical connections to the compressor. Loose wires can prevent the compressor from receiving the necessary power. Make sure that the wires are securely attached to the compressor terminals and that there are no signs of fraying or burning.<\/li>\n<\/ul>\n<h3>Listening for Sounds<\/h3>\n<p>When the fridge is plugged in and turned on, listen carefully for sounds coming from the compressor.<\/p>\n<ul>\n<li><strong>Normal Operation Sounds<\/strong>: A properly functioning compressor will make a low &#8211; pitched humming sound. This sound indicates that the compressor is running smoothly and is compressing the refrigerant as it should.<\/li>\n<li><strong>Abnormal Sounds<\/strong>: If you hear loud rattling, banging, or screeching sounds, it could be a sign of a problem. Rattling might be caused by loose internal components, while a screeching sound could indicate a worn &#8211; out bearing. In some cases, a compressor that makes these abnormal sounds may need to be replaced.<\/li>\n<\/ul>\n<h3>Checking the Temperature<\/h3>\n<p>The temperature inside the fridge is a good indicator of the compressor&#8217;s performance.<\/p>\n<ul>\n<li><strong>Using a Thermometer<\/strong>: Place a reliable thermometer inside the fridge and leave it for a few hours. A properly functioning undercounter fridge should maintain a temperature between 2\u00b0C and 8\u00b0C. If the temperature is significantly higher than this range, it could mean that the compressor is not working effectively.<\/li>\n<li><strong>Consistency of Temperature<\/strong>: Check the temperature at different locations inside the fridge. If there are large temperature variations, it might indicate that the refrigerant is not flowing evenly, which could be due to a compressor issue.<\/li>\n<\/ul>\n<h3>Measuring the Current<\/h3>\n<p>If you have some electrical knowledge and the necessary tools, you can measure the current flowing through the compressor.<\/p>\n<ul>\n<li><strong>Using a Clamp &#8211; on Ammeter<\/strong>: A clamp &#8211; on ammeter can be used to measure the current without having to disconnect the wires. First, make sure the fridge is running. Then, carefully clamp the ammeter around one of the compressor&#8217;s power wires.<\/li>\n<li><strong>Comparing with Specifications<\/strong>: Refer to the fridge&#8217;s user manual or the compressor&#8217;s technical specifications to find the normal current range. If the measured current is significantly higher or lower than the specified range, it could indicate a problem with the compressor.<\/li>\n<\/ul>\n<h3>Checking the Compressor&#8217;s Start Relay<\/h3>\n<p>The start relay is an important component that helps the compressor start up.<\/p>\n<ul>\n<li><strong>Testing the Relay<\/strong>: You can use a multimeter to test the start relay. First, remove the relay from the compressor. Set the multimeter to the resistance mode and measure the resistance across the relay&#8217;s terminals. If the resistance is infinite or very close to zero, the relay is likely faulty.<\/li>\n<li><strong>Replacing the Relay<\/strong>: If the relay is faulty, replacing it might solve the problem. However, make sure to use a relay that is compatible with your compressor.<\/li>\n<\/ul>\n<h3>Pressure Testing<\/h3>\n<p>Pressure testing is a more advanced method that requires specialized equipment.<\/p>\n<ul>\n<li><strong>Using a Pressure Gauge<\/strong>: A pressure gauge can be used to measure the pressure of the refrigerant in the system. Connect the pressure gauge to the service ports on the compressor.<\/li>\n<li><strong>Interpreting the Results<\/strong>: Compare the measured pressure with the recommended pressure values for your fridge model. Abnormal pressure readings can indicate a problem with the compressor, such as a leak or a blockage in the refrigerant system.<\/li>\n<\/ul>\n<h3>When to Seek Professional Help<\/h3>\n<p>If you&#8217;ve tried all the above methods and still can&#8217;t determine if the compressor is working, or if you&#8217;re not comfortable performing these checks yourself, it&#8217;s best to seek professional help. A qualified technician has the expertise and tools to diagnose and repair compressor problems accurately.<\/p>\n<h3>Conclusion<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.gold-fly.com\/uploads\/43480\/small\/condenser-coil-with-cataphoresis1911c.jpg\"><\/p>\n<p>As a supplier of monoblock for undercounter fridges, I understand the importance of a properly functioning compressor. By following the methods outlined in this blog, you can check if the compressor of your undercounter fridge monoblock is working. Regular maintenance and timely troubleshooting can extend the lifespan of your fridge and ensure its optimal performance.<\/p>\n<p><a href=\"https:\/\/www.gold-fly.com\/heat-exchanger\/evaporator\/\">Evaporator<\/a> If you&#8217;re in the market for high &#8211; quality monoblock for undercounter fridges or have any questions about our products, we&#8217;d love to hear from you. Feel free to reach out to us for more information and to start a procurement discussion.<\/p>\n<h3>References<\/h3>\n<ul>\n<li>&quot;Refrigeration and Air Conditioning Technology&quot; by William C. Whitman, William M. Johnson, and John A. Tomczyk.<\/li>\n<li>Manufacturer&#8217;s manuals for various undercounter fridge models.<\/li>\n<\/ul>\n<hr>\n<p><a href=\"https:\/\/www.gold-fly.com\/\">Shandong Gold Fly Heat Exchange Equipment Co., Ltd.<\/a><br \/>Shandong Gold Fly Heat Exchange Equipment Co., Ltd. is one of the most professional monoblock for undercounter fridge manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale bulk monoblock for undercounter fridge in stock here from our factory.<br \/>Address: No.166, Wanshida Road, East Industrial Park, Xingfu Town, Boxing County,Binzhou City, Shandong Province<br \/>E-mail: Dom@goldfly.com.cn<br \/>WebSite: <a href=\"https:\/\/www.gold-fly.com\/\">https:\/\/www.gold-fly.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As a long &#8211; standing supplier of monoblock for undercounter fridges, I&#8217;ve encountered numerous inquiries from &hellip; <a title=\"How to check if the compressor of a monoblock for undercounter fridge is working?\" class=\"hm-read-more\" href=\"http:\/\/www.meovat9.com\/blog\/2026\/06\/27\/how-to-check-if-the-compressor-of-a-monoblock-for-undercounter-fridge-is-working-4ec3-ba8de4\/\"><span class=\"screen-reader-text\">How to check if the compressor of a monoblock for undercounter fridge is working?<\/span>Read more<\/a><\/p>\n","protected":false},"author":889,"featured_media":3064,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3027],"class_list":["post-3064","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-monoblock-for-undercounter-fridge-4521-bbaacb"],"_links":{"self":[{"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/posts\/3064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/users\/889"}],"replies":[{"embeddable":true,"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/comments?post=3064"}],"version-history":[{"count":0,"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/posts\/3064\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/posts\/3064"}],"wp:attachment":[{"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/media?parent=3064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/categories?post=3064"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.meovat9.com\/blog\/wp-json\/wp\/v2\/tags?post=3064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}