So sorry to hear that this happened when it is so very hot. Air Conditioning and Heat Pump Troubleshooting Simplified, Air Conditioning & Heat Pump troubleshooting questions with answers index, Furnace troubleshooting questions with answers index, Gas & Electric Furnace Troubleshooting Simplified, American Standard Trane Condenser Fan Motors, ICP Heil Tempstar Whirlpool Flame Sensors, Trane American Standard Furnace Draft Inducers, Trane American Standard Pressure Switches, Managed by Wooassist - Woocommerce Support. Problem: My heat pump is making a funny hissing noise. Steve. Steve, Your email address will not be published. Whether you need furnace ignitors, AprilAire filters, EZ Flex filters, or another kind of HVAC merchandise, we want to serve you. Yes, it is possible that the reversing valve could be stuck half way between heating and cooling. Steve. How does a reversing valve work? Goodman Heat Pump Troubleshooting. In the winter, in the middle of the night, the unit outside will make a loud decompression/discharge sound, almost like firing a torpedo. However, a lot of central heating pump problems are the cause of boiler issues. Once the reversing valve has moved to its final destination, it switches the flow of refrigerant. My Trane heat pump is icing at outside unit . Outdoor unit makes strange or loud noises: Heat pumps do tend to makes strange and/or loud noises at times, more so in the winter. I am going to call another tech and worries me, but any thoughts here. The tables below are the lists of possible issues which you may encounter having Goodman heat pump not working. Thanks Steve for making this video. Hi Scott! If not then you might have a bad thermostat. Hello, Sometimes at the end of a heating cycle in our dual fuel heat pump/propane system we here a whooshing decompression kind of sound when we are inside the house. We carry a huge range of brand name items that can be purchased online. The solenoid uses magnetics to cause the valve to shift. We have a 5 ton Carrier which is 3 yrs old and the decompression type sound lasts just a few seconds. Buzzing or humming could be from your heat pump’s reversing valve in winter, and you may hear this noise even when your heat is off since the valve’s solenoid coil always runs at low power. If you are referring to the outdoor unit making a pop then the only thing that I can think of that might cause this would be ice forming on the outdoor coil expanding and contracting when the heat pump is running. Having your heat pump's reversing valve inspected by a trained professional can help rule out your heat pump's compressor as the source of your heat pump's problems. You might have a defrost thermostat issue since the heat pump seems to be defrosting when it really does not need to defrost. It was very loud! Steve. Thank you so much! What a big help and $$ saver–won’t have to call for service this time. Steve. Below we have a YouTube video made by Supercool Slide Rule which shows how to test a reversing valve coil. Required fields are marked *. I have heard some of the units make some pretty load sounds when going into defrost. The circuit breaker did not trip off. Runs fine except when it goes into defrost. Reversing valves on all heat pumps are energized in the cooling mode-(except for Rheem and Ruud). 0 0. Sometimes when I was doing service I would try to connect and disconnect the orange wire (this is the wire that most of the time controls the reversing valve) and see if the valve shifts. It is used at room air conditioners, packaged and central air conditioners. Get it as soon as Wed, Jan 20. Required fields are marked *. The buzzing sound from outside is the reversing valve. Sometimes removing the reversing valve coil reinstalling it can make it quieter. I am sorry that I can not answer your question. This component is responsible for transmitting the electrical charge that turns on the motors. I have a heat pump system and recently my contactor went, I replaced it immediately and the new one lasted for a week. 50. We have processed over 25,000 Successful PayPal Orders! We offer same-day shipping on most products, so you won’t have to do without the goods you need for long. Problem: Outdoor heat pump unit makes a loud sound in the winter? This sounds like the reversing valve is shifting back and forth. This could also be a broken or loose wire or a heat pump that is low on refrigerant charge. Note: unit is 16 years old. It’s the line that goes to the fan assembly that’s making the noise. Arnold’s Service Company, Inc. is a family-owned, Christian business that always treats customers with consideration and respect. About the only way to tell if it is not normal would be to install some gauges and watch the gauges when the heat pump goes into defrost. the noise is like a circular saw going through a 2 x 4 wood and wakes me up most of the times. If you are looking for an HVAC products supplier that will treat you the way you should be treated, turn to us. We Have Promptly Shipped Over 350,000 Orders Since 2002! Make sure there are no blown fuses. I believe that on Trane units the reversing valve coil is energized in the cooling mode constantly. When the hot gas comes off the compressor the valve will either direct the flow to the heat exchanger for cooling mode … Hydraulic hammering can occur with abrupt impedance (a valve closes) to non-compressible fluid flow (liquid). Not a squeak or rattle or gurgle, but a one-time bwwwuuuusshhhh. I am also sorry, that I really have no idea why and where the noise is coming from other than maybe the compressor vibration is traveling through your refrigeration line set and into the walls of your home. Another thing to remember is that a compressor can have weak valves yet not have hot gas bypass, so if the reversing valve is OK, the compressor has to be the source of the problem. Charge was added to unit first of summer, tech did not find any leaks. I recommend turning heat pumps to straight aux heat (emergency heat) when the temps are below 20 degrees outside for long periods of time (1 or more days). Best of luck in finding the problem. This allows a residence or facility to be heated and cooled by a single piece of equipment, by the same means, and with the same hardware. Steve. I would like to suggest setting your thermostat to cool and testing the voltage going to the reversing valve coil to see if it is getting 24 to 28 volts AC. Steve. Hi Marc! I believe that Rheem Ruud energizes the reversing valve in the heating mode unless they have changed since I was doing service back in 2005. During this defrost time the heat pump defrost control should turn your indoor electric heaters on so you do not get air conditioned cold air coming out of the registers. We are Accredited Better Business Members with an A+ Rating! And if I ever do call them, at least I won’t sound like a complete novice homeowner! Our email is. We have one of the Best in Website Security with a Norton Symantec Secured Website and Shopping Cart! I thought my unit was bad because of the noise it was making but your video sounded the same way. With the help of a component called a reversing valve. Thanks so much for your interest in our website and the opportunity to do business with you! During this defrost time the heat pump defrost control should turn your indoor electric heaters on so you do not get air conditioned cold air coming out of the registers. We Provide Fast UPS Shipping! If it works correctly and doesn’t make any noise, then very likely it is a reversing valve issue. Answer: Yes, if your heat pump reversing valve is not shifting or is stuck in between the heating and cooling mode then you heat pump will make a funny hissing sound or not sound normal. Hopefully, the heat pump is under warranty if you do need parts. It’s not the same sound that’s in your movie. A reversing valve gone bad can be stuck in either the “heating only” or “cooling only” mode or they can become frozen at someplace in between either position. Also, the strange thing is that I haven’t notice the this noise until recently with our 7 or 8 years old Carrier system. You’ll need to bring a technician out to replace it. Defrost mode usually last only 10-15 minutes. You might have a faulty defrost thermostat, but this is unusal for the evaporator to freeze up in the winter time unless the heat pump is stuck in the cooling mode. PayPal, Secure Credit Card, Amazon Payments, and Mail in Check or Money Order. If your reversing valve is stuck I would suggest that you check or have your heat pump system refrigerant charge checked. $50.45 $ 50. I was actually doing online research regarding heat pumps and came across this website and seems to be very informative on the Q’s & A’s. I would tell the HVAC repair tech about your noise. Yes, this could be a thermostat problem, a defrost control, defrost thermostat, low on charge or just real cold outside. Steve. We reused old thermostat wires, can it be related? This occurs every time the unit goes into the “defrost cycle”. We hope you have a blessed and Happy Holiday Season! Most of the time contactors fail prematurely because the contactor coil is not receiving a minumum of 24 volts. Sounds like a versing valve problem. This can create an initial shock wave which can then resonate through the system piping. Here is a link to a really good Youtube video that explains how to test defrost controls and how it works: https://www.youtube.com/watch?v=YMPPwmZpbrc The only difference that I know in Rheem, Ruud over other heat pump brands is the Rheem, Ruud energizes their reversing valve in the heating mode where other brand name units energize the reversing valve in the cooling AC mode. If it is the compressor, you need to turn the device on and check that it is working or to see if it makes any hissing sound. Your email address will not be published. What I want to know, is it possible that the valve is stuck half way…. I hope you have a great day and week! We sell furnace parts, air conditioning parts, AprilAire filters, EZ Flex filters, and many other HVAC parts and supplies at affordable prices. Hi Stan! The sound the unit makes with a blown valve on the compressor and a stuck reversing valve are real similar. Thank you! We Provide Fast UPS Shipping! 1 decade ago. 1 Air-Source Heat Pumps. It is supposed to be 95 here today in Louisville, KY. God bless you and your family. RUUD Unit We bought a replacement defrost control board because our outside unit was freezing up, this was not the exact board but one that said it replaced my model and looks identical. We would love to have your business! If you want me to look up parts then please send me your unit’s product number. Here is a link to the plumber’s pipe strap https://www.amazon.com/Sioux-Chief-524-1022PK2-10-Feet-22-Gauge/dp/B00745VXN2/ref=sr_1_2?crid=2SPEYRA47FLLD&dchild=1&keywords=plumbers+pipe+strap&qid=1602931602&sprefix=plumbers+pipe+str%2Ctools%2C156&sr=8-2 I would also like to recommend that you get your heat pump checked out by a licensed HVAC contractor to make sure that your heat pump is charged up properly and running efficiently. The check valve on the indoor coil’s TEV would t… I know the piping pressures have to equalize in order for the system to reverse, but I normally hear a swissssssshing noise like you have said. I myself am an tech and have a question. I am very glad to hear we were able to help you out. Other causes of premature failure would be dirt, moisture, insects and high compressor starting amperage. This all should be under warranty. This should cure problem of noise. Reversing Valves on Heat Pumps Definition, Location, Function, Repair. A buzzing reversing valve is a common occurrence found on all brands. You might have a slight short in one of the old thermostat wires which is robbing power to the contactor and other controls. Hope you have a nice day! We would love to have your business! I have a Carrier 30 (I think that means a 3 ton) anyway. Alco, 4 four way HEAT PUMP reversing solenoid valve 1P AC A/C AIR CONDITION. If it becomes too noisy you might want to call a service tech to come and make sure the operating pressures and refrigerant levels are right. But as the previous answer said, as long as it works the buzz doesn't matter. This solenoid coil works on 24 volt. i.e., heat pumps have reversing valves that reverse (or shift) the flow of refrigeration between the heating and cooling modes. Typically, the valves shifting causes the swooshing noise. loud enough to wake us up. If the contactor is not getting at least 24 volts AC to the contactor coil then this would cause contactor chatter as cause the contactor to go out prematurely. It’s just the nature of the beast. Efficiency; ENERGY STAR certified; up to 19 SEER; Cost; Unit Price: Around $4,000 Parts/Repair cost:$250 to $600 (average); $800 to $1,700 (high); $15 to $150 (low) Reviews; Customers gave this heat pump over 4,600 five-star reviews, with only 44 one-star reviews. I just got a brand new Rheem out and inner unit installed. 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