They are cheaper than resistive heating, but these come with limitations. I have a Lennox EC10Q3-20 furnace about 20yrs old and there's a separate air conditioning unit on the outside of the house. This limit is typically between 35-40 degrees Fahrenheit. Although this is already a function of the Pelican PEARL economizer controller, in some situations customers use Compressor Lockout to prevent the compressors from being turning once the outside air is below a certain set point to force economizer only activity. (Fixed), Whirlpool Dishwasher Buttons Not Working? A Simple Way to Calculate Heat Pump Balance Point Copyright What Should Compressor Lockout Be Set To? I need to get my ductwork all set up right and sealed before I think about all of this. How do I delete an existing shared schedule? of the heat pump increases with higher ambient temps. So that, when outdoor temperatures fall below 30 degrees, the auxiliary heat will kick into action. Depending on your Nest thermostat model, follow these steps to correctly set up your thermostat. Balance Point (Compressor Lockout) Off, 5 F to 60 F (in 5 F increments) or -15.0 C to 15.5 C (in 2.5 C or 3.0 C increments) Compressor Lockout requires an outdoor temperature. Recommendations? How do I stop a phone number from receiving text notifications? Auxiliary heat lockout helps homeowners to save on heating costs. TX attic insulation options - foam/ radiant barrier/ blown in. The heat pump can run while the heat strips run at the same time, but the furnace and the heat pump can not run at the same time unless he has high temp cut outs in the supply plenum. Its not going to prevent setting by outdoor temperatures. What zone controller do my thermostats communicate with? %%EOF Thermostat Settings - Heat Pump Lockout - HVAC-Talk: Heating, Air Houzz uses cookies and similar technologies to personalise my experience, serve me relevant content, and improve Houzz products and services. This causes the compressor not to get the necessary air required for cooling. When outside temperature is below this setting, thermostat . Questions About Becoming A Professional Member? I've changed this setting myself several times and it's currently set to 25 degrees. I know everybody is saying to set the thermostat and leave. Now that its cold it seems to run constantly. As the outdoor temperature gets lower, the effectiveness of the heat pump reduces. Thanks for reading. Next time the tech comes out, ask him for your superheat and subcooling temperatures. hbbd```b``n@$=w.)Hq:,R"xH|i(6_, b30E"! To check if your Nest thermostat has compressor lockout, open the Nest app and go to Settings > Equipment. However, when the temperatures start to rise, you rely on it to keep your home cool and comfortable. Overcharging the system with refrigerant: Condenser fan motor not running properly: What to do when compressor lockout? This causes the compressor to malfunction and cause it to become unstable. Natural gas at $1.44 per therm, 80% efficient furnace:(1,000,000 / 100,000 btu per therm) x 1.44 / .8= $18. A reset means something tripped. Balance point can be no greater than 30F. The service manager was out on Thursday and rechecked the system, apologized for the erroneous information the service technician told me, and returned my un-cashed check. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! When a compressor locks out, it means that the compressor has shut down due to an overload or excessive heat. 195 0 obj <>stream What is the Temperature / Resistance value for a Pelican external temperature sensor? Joseph is an HVAC technician and a hobbyist blogger. What are the different schedule Repeat options? I replaced my inducer motor on my furnace a couple of years ago. JavaScript is disabled. Do ventilation rates adjust based on fan speed? Additionally,airlucent.comparticipates in various other affiliate programs, and we sometimes get a commission through purchases made through our links. If your Nest thermostat is connected to a forced-air furnace (a furnace that uses ducts to deliver heat), it will turn on the furnace fan to circulate heat. Does that sound correct? The temperature at the register was about 86 to 88 degrees and the thermostat was set to 70. Heat pumps are an efficient way of cooling your home. I did Heating Cost Calcs that looked at the COf using the discounted DTE winter rates (5.5 c/Kw). I changed this to 15 degrees. suggestions. Understanding different Pelican Notifications. If you are comfortable and the unit keeps up, a HP should be the most cost effective. Can I pay for multiple site subscriptions at once? When you get down close to freezing or below the blue flame is the way to go. Heat pump capacity drops at colder temperatures. Equipment Type is Air to Air Heat Pump. Master bedroom hot - don't see any thingys to shut off ducts Do Not Sell or Share My Personal Information. If your compressor locks out, its important to troubleshoot the problem so that you can get it running again. The Nest thermostat can also control your furnaces compressor. Heat pump w/electricity at 12 cents per kw-hr, Coefficient of Performance = 3 at 35F ambient:(1,000,000 / 3414 btu per kw-hr) x .12 / 3= $11.71. Auxiliary heat is very inefficient but takes a shorter time to warm your home and reach the set temperature quickly. My parents had a Nest and ended up switching back to their old thermostat. What do the zone controller lights indicate? If set at 35, it would allow both heat pump and electric heat to work from 35F to what ever the balance point setting in 0350 is set at, below balance point it would only allow electric heat to work. Youll also see a yellow leaf icon. Does Pelican track any critical or private information or data. So if you switch to a backup electric heat source, youre also switching to paying two to four times as much for the same amount of heat. To prevent any damage to the compressor, it enables its safety feature. To me, this seems like a scam to avoid getting service calls that could lead to costly warranty repairs. PDF PTCS Heat Pump Thermostat Support Sheet : Honeywell Thermostat Models If the electrician charges the system with more than 450 500 PSI of refrigerant, the high-pressure cutout may trip. Heat was coming out of the vents when the electrician cranked it up to a desired temp of 89.5 and the inside temp was at 70.0. 'https://':'http://') + 'secure.wufoo.com/scripts/embed/form.js'; s.onload = s.onreadystatechange = function() { var rs = this.readyState; if (rs) if (rs != 'complete') if (rs != 'loaded') return; try { q1ezhd9u1df5n34 = new WufooForm(); q1ezhd9u1df5n34.initialize(options); q1ezhd9u1df5n34.display(); } catch (e) { } }; var scr = d.getElementsByTagName(t)[0], par = scr.parentNode; par.insertBefore(s, scr); })(document, 'script'); The calendar says its spring! Insert your own prices and furnace efficiency for more accurate costs. It would be nice to have an indicator that I could turn on or off if I got tired of the lights off the wall bracket.