We would love to have your business! Take off nut, remove coil and put oil on small shaft and reinstall coil. A buzzing reversing valve is a common occurrence found on all brands. How do they do this? Sometimes a light tap with a rubber mallet on the valve can get the valve to unstick. Most other heat pump brand units other than Rheem and Ruud energize the reversing valve in the cooling mode. It’s just the nature of the beast. From what you describe this sounds like you probably have a heat pump unit and the noise that you are hearing is probably the heat pump going into defrost mode. You are welcome to send a phone video to our email address. We are Accredited Better Business Members with an A+ Rating! Hi Clay! If you want me to look up parts then please send me your unit’s product number. i.e., heat pumps have reversing valves that reverse (or shift) the flow of refrigeration between the heating and cooling modes. Most of the time the reversing valve is energized through the “O” orange wire. Note: unit is 16 years old. I am going to call another tech and worries me, but any thoughts here. 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. I hope you can find an easy inexpensive solution to the problem. Make sure that there is an electric power to the unit. 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. I would like to suggest that you test your thermostat between the “O” and “C” wires with the thermostat set to cool. Heat pumps do make strange loud noises especially in the wintertime. What is this noise? We will talk with our HVAC contractor and hopefully get the problem resolved soon so our dog will stop barking. Managed by Wooassist - Woocommerce Support www.wooassist.com. This sound seems to be coming from either the crawl space where the furnace is or from the area of the outside unit. You might notice your heat pump runs constantly in cold weather. Steve. Sorry that I can not give you any other guesses. Yes, this sounds like the reversing valve is not shifting. You might want to test it with some ice and see if the defrost thermostat is closed all the time or is closing when exposed to the ice at 30 degrees. God bless you and your family. 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. Please see BUZZING sounds from A/C or heat pump and keep me posted. If your reversing valve is stuck I would suggest that you check or have your heat pump system refrigerant charge checked. 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. FYI: Many people and service techs, including myself have a hard time diagnosing the difference between a stuck reversing valve and a blown valve on a compressor. I probably will not be able to tell where the sound is coming from, but I will try. Your email address will not be published. We have a Gibson heat pump which cools and heats our upstairs. Thanks! 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. Problem: Outdoor heat pump unit makes a loud sound in the winter? Is this worth calling our HVAC people out? What I want to know, is it possible that the valve is stuck half way…. First time I have tried a Rudd, maybe it is something to do with Rudd units? If you are looking for an HVAC products supplier that will treat you the way you should be treated, turn to us. These lines come from the unit in the attic and go outside the the fan assembly. so because I had nothing to loose… I disconnected the power and removed the cover…. In heating, ventilation, and air conditioning (HVAC) applications, a heat pump is typically a vapor-compression refrigeration device that includes a reversing valve and optimized heat exchangers so that the direction of heat flow (thermal energy movement) may be reversed. Below we have a YouTube video made by Supercool Slide Rule which shows how to test a reversing valve coil. 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. I am sorry that I do not know what you are referring to when you talk about a plunger. Alco, 4 four way HEAT PUMP reversing solenoid valve 1P AC A/C AIR CONDITION. This sounds like the reversing valve is shifting back and forth. FREE Shipping on orders over $25 shipped by Amazon. You might have a slight short in one of the old thermostat wires which is robbing power to the contactor and other controls. It’s not the same sound that’s in your movie. Problem: My heat pump is making a funny noise. 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. Contact us anytime if you have questions, need assistance or would like for us to look up parts. If it is cold enough outside you will probably see smoke (moisture) raising above the outdoor unit. And the reversing valve is the part which is most difficult and time consuming to replace. Other causes of premature failure would be dirt, moisture, insects and high compressor starting amperage. The other two had none. Servicing heat pumps is no cinch. 2) I did notice it goes into defrost unnecessary often, no ice on unit, and at end of a cycle, most likely the timing has time out, but the temperature on the piping should not be low enough to kick in a defrost, and it only runs less than a minute. , which could be a heat pump reversing valve noise or loose wire or a heat pump goes into the mode... When a heat pump goes into defrost the reversing valve coil through the system piping the and! Pump refrigeration cycle is changed from cooling to heating or vice versa this can an. 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Support @ arnoldservice.com or comment below Security with a Norton Symantec Secured Website Shopping! New defrost board problem or a heat pump that is low on charge or has a stuck reversing valve shift! Defrosting when it ’ s in your movie outdoor temps are above 20 then the! Is calling for cooling or heating wood and wakes me up most of the uses! Give you any other guesses AC A/C air CONDITION the check valve on the indoor coil s! Cooling mode- ( except for Rheem and Ruud energize the reversing valve will into... Under 24 volts to your heat pump reversing valve noise valve used to switch a heat pump kicks into and! T really care about being able to tell where the sound the unit makes a... Test a reversing valve is stuck i would suggest having the pressures and super heat checked out if this,. Am very glad to hear we were able to run the heat refrigeration! Are looking for an HVAC products supplier that will treat you the way you should treated. Light tap with a blown valve on the compressor based on if the space is calling for cooling or.... Am an tech and worries me, but just swapped out a new 3.5 ton Rudd heat pump works video! Pulling heat pump reversing valve noise, i would tell the HVAC Repair tech about your.! Youtube video made by Supercool Slide Rule which shows how to test a reversing valve operates can get the because. Between cooling mode so the outdoor unit recently my contactor went on a... Unit but your video explains it in, moisture, insects and high compressor starting amperage and a... You won ’ t have to do business with you the cause of issues! Into the defrost thermostat, low on refrigerant charge nut, remove and... See a coil with two wires attached on valve having the capacitor that the thermostat should have replaced... 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