This is fairly easy to diagnose. This is a job for your local Carrier expert. Broken reversing valve: As the name suggests, the reversing valve allows the heat pump to work as both a heater and an air conditioner by reversing the direction of the refrigerant. When call for heat the coil doesn't make any noise. They are probably trying to get you purchase a new unit. It puts all the Freon in the outdoor unit. A Quick overview of Reversing Valve on Heat Pump System. I have a Lennox heat pump, model HPXA12-024-230 Last week, the fan would not come on, when observed the motor was hot and was humming. The reversing valve works in a sliding mechanism; this allows the valve to change the directional flow of the refrigerant in the system, which is how your heat pump changes between modes. They can fail 2 ways. I did not know that a heat pump … Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in … We describe how a heat pump reversing valve works, how to find the reversing valve, and we include reversing valve troubleshooting advice and research articles. This is one of the leading causes of compressor failure on heatpumps. If the heat pump turns on when you want cool air, but not for heat, this is likely the cause. Heres a tip and I tried this on my air source heat pump at home and it worked and the reversing valve has never stuck since . It is good to know that if your heat pump reversing valve is not shifting or is stuck between the heating and cooling mode, it will make a funny hissing sound. Something to try: Tap the solenoid while power is applied. Because many heat pumps can lose efficiency as outdoor temperatures fall below freezing, your system probably has a supplemental heat source – either electric resistance heating elements, or a gas or oil furnace. If you feel your heat pump reverses to often or not enough there is an adjustment on the circuit board where it can be changed between 30, 60 and 90 minutes. Rick should get accept for this. Weighed in 9lbs and 2ozs of R-22 and started it up. Check if the solenoid will energize. I have a Goodman Heat Pump, model GSV130241BA, that I installed in my apartment last fall. The most common reason a heat pump would be stuck in cooling mode (or heating mode, for that matter) is due to a broken reversing valve. It will also need to be replaced by a technician. Without this valve, a heat pump would remain in one mode or the other. grayfurnaceman, who definitely knows his stuff, writes that he has never been able to unstick a stuck reversing valve. I installed one it it ran good through the winter (4 month), and than the reversing stuck in the cooling mode. The unit was pumping and cooling at 3:30 P.M. Call Kool Breeze, any time of the day or night, for the repair work necessary to restore your heat pump to full operation. This article gives a definition of a reversing valve used to switch a heat pump between cooling mode and heating mode. The unit started right up. Service Application Manual SAM Chapter 620-87 Section 18 HOW TO DIAGNOSE AND CORRECT REVERSING VALVE PROBLEMS Ranco Controls The reversing valve is the same in either case. The reversing valve is the component of a heat pump system that determines whether the system runs in heating or cooling mode. If you have a heat pump that either won’t give you heating or won’t give you cooling, the fault probably lies in the reversing valve. Price for changing reversing valve about 500 to 700 dollars depending on location. First: question is will low freon stop the reversing valve from switching? This is a Goodman PHJ030-1A package heat pump. Pumping down does no harm. They can stick in either the heat or cool position. You already know problem. I have an orange wire going to a "O/B" terminal because it is a heat pump and the same terminal exists on the new thermostat, however the new thermostat has a jumper the original thermostat does not that is to tell the thermostat whether it is for an O reversing valve or a B reversing valve. The reason that a heat pump can switch between heating and cooling modes is a small part called the “reversing valve.” This is a four-way valve that sits in the refrigerant line, and directs the flow of refrigerant through the system. I have a 5 ton 10 seer goodman heat pump, still running fine. Reversing Valves on Heat Pumps Definition, Location, Function, Repair. It does no harm to the freon. The heat pump is a 3ton unit with R410A and has a Copeland Ultha tech scroll compressor. The 4 way reversing valve are two valves in one, the nose valve which switches the refrigerant flow in the system. Heat Pump, General ; Do you know how to properly hook up power to the reversing valve? A reversing valve can become stuck in a certain position, be it a mode or in-between modes, for a few reasons. In this tip, Greg Brunts discusses the proper way to energize a heat pump reversing valve. A pilot valve which controls the nose valve position threw systems pressures. Our heat pump keeps making a strange noise and our dog will not stop barking at it. Is there anyone out there that has had problems with reversing valve sticking on Amana heat pump? Angella, this problem sounds like a wiring or thermostat problem to me. January 14, 2021 Danielle Wexler No Comments. It will not free up your reversing valve. Sticking or jammed thermostatic expansion valves: in addition to debris, dirt, or icing problems that occur in TEVs or thermostatic expansion valves, sometimes the thermostatic expansion valve on brand new air conditioners may need an extra jolt to get it working, as we explain here. The main components of every heat pumps are; compressor, evaporator, condensing coil, reversing valve, sensors, thermostats, fans and other, which can be found in this article. A heat pump is a device designed for heating, cooling and dehumidifying. Turn off the unit at the T"stat,leave the indoor fan on. I had seen this before; I keep a spare capacitor and changed it. This valve is often the hardest of all parts in the heat pump system to diagnose. The Reversing Valve. Recovered refrigerant,cutting crimp out and putting splice in,removing old reversing valve and putting new one in place and changing liquid line drier. The reversing valve on ours is in plain view. I went to turn my cooling on for the first time only to find it was heating. It is a little 1 1/2" cube thing that is mounted sorta crooked on the front of the unit. After some digging and verifying, I found that the reversing valve is stuck in the heating position. The new reversing valve had come in late morning and we went to work putting it on. Those things almost never stick in the heat mode because the units are almost exclusivly used to cool, especially in Miami. If it energizes and the valve … (Yes or No) Second: I check the reversing valve coil and found 24 volt going to it, it had 17.6 ohms. My problem is, now I don't want to use it as a heat pump anymore, so I took the coil wires from reversing valve, and put them right on the compressor contactor coil, by-pass the defrost board. I have heard from another dealer (technician) that there has been a problem with them ? How a Heat Pump Reversing Valve Works. The reversing valve is controlled by a circuit board that initiates a reversing of the reversing valve and changes the outdoor coil to the hot coil for a short period to melt the ice. This is a component that sits along your refrigerant line, and is responsible for switching the direction that the refrigerant flows through the lines within the heat pump. Danielle Wexler. The mode in which the heat pump will operate is determined by which reversing valve tubes are piped to the inside and outside heat exchangers. There are three cycles or modes of the heat pumps; cooling, heating and defrosting. The reversing valve should not get stuck in the middle of the valve during normal operation. He also explains under which conditions the reversing valve will be energized. Bad reversing valve – If you have a heat pump not heating, but it works in cooling mode, you might have a bad reversing valve. Put your gauges on or at least a high side gauge with a short hose and quick connect to prevent refrigerant loss. A Broken Reversing Valve. I did measure the old cap and verified that it was bad (I repair tube amps as a hobby) Today, the fan motor will not start, although this time it is cool and not humming. If the compressor was damaged while the system was running with the reversing valve stuck in the middle of the valve make sure that a new reversing valve is installed with the new compressor. Start the unit and let the pressures settle to normal. We are not allowed to recommend Service companies. Heat pump not heating ? Just get …

how to unstick a reversing valve on a heat pump 2021