When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions. Need more help? In the lockout mode, the compressor will not operate, the alarm output is energized and the red LED will blink to indicate which fault has occurred. That's exactly what I was looking for, I'll try it - thanks! We have been getting down to 6 degrees F with snow recently, which is when the problem manifested. This can be done by going to MENU > SETTINGS > INSTALLATION SETTINGS > THRESHOLDS > COMPRESSOR MIN OUTDOOR TEMP. In this option, please select what you find best fits for you. Usually when the outside temperature is above 30° it uses heat pump only but when it’s close to 30° it uses the back up gas furnace. No matter what the weather is like outside, geothermal heat pumps deliver energy-efficient performance to give you the most comfortable indoor comfort for your home. Monday, February 15(Ontario Family Day)9 a.m. to 9 p.m. EST. Some heatpumps can take longer than others to warm up and finally start giving heat. The information given below can be helpful for you then. I then put the system back into heat mode and ran the temp back up 3 degrees the compressor did not lock out in the 30 minutes it took to get there. A single-stage compressor offers just one speed: high. When the backup heat droop is set to Comfort, the control algorithm will use backup heat as​ needed to maintain the setpoint within +/- 1 F. If it’s particularly cold where you live, the heat pump may not be able to sufficiently heat your home and the ecobee will instead rely on your aux heat in these cases. It will run during defrost and if the heat pump can't keep up it will kick on when the indoor temp falls 2 degrees below the set point. And his was a heat pump as far as I know it's still running. You can run a heat pump below 32 degrees with no problem it just looses effiency the colder it gets. Now this 'COMP TO AUX DELTA' option is asking for how many degrees the indoor temperature should drop before using the auxiliary heat. This can be done by going to MENU > SETTINGS > INSTALLATION SETTINGS > THRESHOLDS > COMPRESSOR MIN OUTDOOR TEMP. In these cases you can manually enter a higher differential to avoid the auxiliary heat coming on for a certain time or temperature difference (it is up to you what value you would like to keep it at). What could be the problem? With this extreme cold, however, I've hit a problem. Jon Held_2 Member Posts: 21. Fault code states "soft lock out" on both the compressor and condenser.. And a variable speed compressor costs more than both. Learn how to diagnose common issues before calling in backup. My understanding is that heat pumps of SEER 15 can be more energy efficient than resistive heat down to about 20 degrees F or so, so that's what I was thinking about setting it to. Now I keep on getting alerts that the Aux heat is running. A service tech should be able to set it down to a lower setting no problem. 4 factors that affect the price of a heat pump compressor Factor #1: Single-stage vs. two stage vs. variable speed compressors. I would recommend to set a value for these thresholds first and that should eliminate the aux heat turning on sooner than needed.This can be done by going to MENU > SETTINGS > INSTALLATION SETTINGS > THRESHOLDS > COMP TO AUX DELTA. Heat pump problems can be frustrating (and expensive). the compressor lockout is set at. How it affects price: A two-stage compressor will cost more than a single-stage compressor. Clicking noise heard inside. The heat pump compressor, however, has two main purposes: to maintain the refrigerant flowing inside the heat pump and to increase the pressure in which the refrigerant is compressed into gas. The other method is to disconnect the Aux control wire. An air conditioner or heat pump compressor pulls a high amp draw on startup, which is technically called locked rotor amps. The Climatuff ® compressor you’ll find at the heart of every Trane XR heat pump is a marvel of reliability, known throughout the industry for providing years of trouble-free comfort. Trane Heat Pump ac compressor kicks in for about 3 minutes then stops. Many time when it gets cool over night, the refrigerant will migrate to the outdoor coil. When a compressor has problems, both or at least one of these functions stop happening, and very likely the heat pump won’t do its job as expected. c. Auxillary Heat Lockout (strip heat lockout) must be set to "35" or lower to meet PTCS specification PTCS Heat Pump Thermostat Support Sheet The compressor has to start from a full stop to full blast in less than a second. If you feel the temperature in your house is getting higher, it may be because of heat pump fan not spinning, and therefore, heat pump not cooling. With this extreme cold, however, I've hit a problem. Carrier Infinity thermal lockout low/high stage. Outdoor heat pump coils are usually around 6 circuits. It's set now, thanks again. Below we list a dozen causes of high head pressure in an air conditioner or heat pump compressor motor. Heat pump running constantly. However, you can disable the furnace by changing the System Type in the installer menu to one without Aux heat. Get in touch with our support team. In other words if your aux lockout doesn't go lower than 40 degrees then your compressor lockout is set at 30 degrees. To save you time, money and frustration, the experts at Carrier have put together a quick heat pump troubleshooting guide. With electric backup heat you should not need to lock out backup heat. I finally got to change that setting - that's the one I had asked Nest support about, and they hadn't explained that once you click on the "Always" you can select a temperature. Set compressor lock out to 30, or lower, to see at what temp the heat pump really can't handle the load. I read this directly from an un-named article on the internet that has a number one position in a search for troubleshooting heat pumps – “check the heat pumps … Then raise to temp it can handle the load. My question is, is there a way around this to actually set the lockout temperature? than the heat pump compressor) is referred to as the "Compressor Lockout" setting in the website and app interfaces. Be sure the compressor lock-out function is disabled. Heat Pump Split System and AY28X084 Evaporator Defrost Control Thermostat Air handling unit Heat pump Thermostat unit Air handling unit Cooling unit Warning! Hi. If your heat pump is constantly running, there are likely three main causes: Unusually cold weather: Heat pumps are designed to work much more gradually than a furnace. Is a Password Requried? It does seem to be kicking in frequently instead of normal heat and got an alert that my "Aux Heat was running for more than 180 minutes". I've had my Nest for 2 years now and generally it does what I want. Press J to jump to the feed. Heat pump compressor lockout temperature? My compressor lockout / balance point is at 30° and the Backup heat lockout is set to off. Press question mark to learn the rest of the keyboard shortcuts. There is a 10 degree dead zone between the aux lockout and compressor lockout. update I ran the system in cool mode and dropped the house temp 2 degrees and the compressor never locked out. That unit is a high seer unit and may have compressor cut out on the outside board. Upvote. Assure high voltage power is disconnected using lockout / tag-out procedures if applicable prior to connecting low voltage wiring. When I did resi, it was not at all uncommon to find units rigged to bring 1st stage electric (5kw) on with the compressor in heat mode. When you read information on the web double check that the information is correct. Compressor Stage 2 Temperature Delta: The minimum number of degrees from the desired temperature (set point) before engaging the second stage of the compressor. An air source heat pump has two parts, an indoor unit with a coil and a fan to push the air through your home; and an outdoor unit with another coil, another fan and a compressor. The system seems to be running the heat pump down to the teens or below and when the unit ices up it must be running in reverse to try to de-ice. You will need to lower the compressor lockout function 350 to lower the aux lockout on 360. This is set at a default 35F (1.7C), so the heatpump will not be used when the weather outside is below 35 degrees Fahrenheit and only aux heat will be used in this case. We have a heat pump and recently installed an ecobee thermostat. 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