How do I set a Pelican gateway for a static IP address? How do I set an individual room schedule? What does a thermostat do when it reads high CO2 levels? W -> W I don't know it this had anything to do with it, but the outside temperature yesterday (during service call) was about 65 - 70. Why? on teh thermostat. Can I disable or lock the thermostats Fan Button? This prevents any damage to the compressor and prevents anything worse from happening. Is it always more efficient to have the heat pump running? A dirty compressor can cause a high-pressure lockout. What do the different notification sensitivity settings mean? Also, you can buy a thermostat that has the aux LEDs for pretty cheap instead of rigging up some LED lights. Thus, the compressors low-pressure cutout trips and causes a low-pressure lockout. Check if your indoor unit has a clean air filter or not. What does the Outside Ventilation setting do? Default is Off if ISU 2010 Heating Where the two lines cross is the balance point. Most modern heatpump are designed to run until about 35 degrees outside. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. This may cause a high-pressure cutout. As for why the heat pump stopped working in the first place, he wasn't sure, but a lower pressure lockout is something usually associated with cooling, not heating. Heat pumps are best suited for regions with mild temperatures. The heat pumps economical balance point would be around 50F. Can a PEARL control a separate supply and return damper actuator? Nest thermostats can also be used to control other devices in your home, such as your lights and security system. I just had a Honeywell RTH8500 Touch Screen Programmable Thermostat installed by an electrician and I'm not convinced it's properly done. I run my heat pump all the time at these temps (I have to as the heat pump is my primary source of heat). How do I add a phone number to receive text notifications? Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Nest thermostats are a type of smart thermostat that can be controlled remotely via a smartphone or other device. What is your delivered price for natural gas (in $ per ccf or $ per therm)? How do I choose which days my site is on vacation? JavaScript is disabled. I have the backup heat lockout (gas furnace) set for 45F. 1995-2023 MH Sub I, LLC dba Internet Brands. Option 1 (Balance point + 2F droop): As above, but backup heat is activated if room temperature drops by 2F (compressor is deactivated). Compare the costs of 1 million btus of heat for a heat pump vs a natural gas furnace. Balance Point If system is not sized correctly, you run into comfort issues when strip heat is locked out. Option 1 (Droop Control): As above, but backup heat is activated if room temp drops to the selected droop temp setting (compressor is deactivated) Option 2: (Droop Control with Aux Heat lockout): Compressor works only above auxiliary lockout temp, backup heat works only below balance point, 2 degree droop between temperatures. What are the best or most cost effective settings for the compressor lockout (balance point) and heat pump aux lockout? TX attic insulation options - foam/ radiant barrier/ blown in. The point at which the extractable heat energy gets too low for a heat pumpto adequately heat your home is called the balance point. "The tech did consult the charging chart inside the unit, and I believe it was within a couple of PSI. R -> RH Can I pay for multiple site subscriptions at once? Ask Our Pros-Owner Assistance - NO DIY advice will be given. A heat pump works as an air conditioner in the cooling season and as a heater in the heating season. Can a Pelican thermostat control three fan speeds? This limit is typically between 35-40 degrees Fahrenheit. What is the difference between 0% versus Disabled weighted remote sensor averaging? Website operating The temperature at the register was about 86 to 88 degrees and the thermostat was set to 70. Do I have Pelican economizer controllers? If your Nest thermostat is connected to a central AC unit, you may have noticed the Compressor Lockout feature in the settings. Can a Z8 or Z24 control multiple damper actuators? You can verify this by checking if there is an E terminal on your thermostat and if there is a wire connecting to it. Heat pump capacity drops at colder temperatures. What are the different schedule Repeat options? A reset means something tripped. What Should Nest Compressor Lockout be set to? How do I get to a room climate control page? I could see the gauges but was too far away to read the chart myself. It was below 30 degrees when they installed them so not warm enough to run on heat pump. How do I balance a Pelican zoning system? RULES for AOP - Owner Assistance and Contractors, The ARPA Zone/Open Membership Discussion Forums, Energy Efficiency and Building Performance Discussion NEW, Carnak Zone/Locked Areas - For Professional Member Only, How To Become a Pro and Rules For Pro Members, Pro Forum: Refrigerants and EPA regulations **NEW, Pro Forum: Residential Refrigeration and Appliances **NEW, Pro Forum: Equipment Recalls and Bulletins **NEW, Pro's Forum: Building Science Discussions, Educational Forums - Open for all in the industry, Welcome to HVAC-Talk's Educational Forums, How to Submit Links, Articles and Quiz Questions, Frequently Asked Questions About Submissions, Physics, Thermodynamics, Fluid Flow and Combustion, Educational, Training & Reference Information, Manufacturer's Technical Information Links, Electrical Theory, Circuits and Electronics, HVACR Equipment, Components & Accessories, Accessories Humidifiers, Air Cleaners, HRUs, Fans, Filters, etc. For the record, I current have it set to 15. The purpose of the lockout relay is to keep the compressor off when there is a significant fault, EVEN if the fault condition goes back to normal. I have my heat pump (compressor) lockout set for 40F. I need to get my ductwork all set up right and sealed before I think about all of this. I'm in wetern NY with 2 stage heat (main-heat pump and aux-electric strips). In this article, you should expect to learn about: Read also: Nest Thermostat Blowing Hot Air on Cool [Solved]. When a compressor turns on lockout mode, you have to turn it on again by pressing the reset button manually. This can be caused by a variety of things, such as a clogged filter, a restriction in the system, or a problem with the compressor itself. Recommended condenser cut out is usually between 35 and 40 outdoor temp. In other words, can I know just by checking my system components? When should I use the thermostat Calibration Degrees? I am sorry Tlewis I forgot that he is using a gas furnace which I know changes things a bit. I have a 5 month old Rheem Heat Pump with gas backup and I have a question about the compressor lockout temperature setting. Youll also see a yellow leaf icon. The tech did consult the charging chart inside the unit, and I believe it was within a couple of PSI. Does Pelican enforce any short-cycle timers? Can you unlock a compressor? Can a PEARL control two damper actuators (outside/return)? Is there a supply air low temperature alarm? 1. When the outdoor temperature is below the configured temperature, the thermostat will switch to using the secondary heating source as its primary source and will keep the Heat Pumps compressor(s) disabled. Compressors have a reset button on them. Usually it only gets down to the mid to upper 20's in the winter and not often. Without your utility rates and model numbers, it's a guess when it's cheaper to run the furnace. To learn more about heat pumps, energy savings and efficiency ratings such as COP and the Heating Seasonal Performance Factor (HSPF, which looks at efficiency over an entire heating season), contact Ernst Heating and Cooling. Can I schedule when notifications are active? As I stated before, your tech is full of sh%t and just making an excuse for his ignorance. When outside temperature is below this setting, thermostat . If it is windy or really close to 15 it will have to kick in one stage of strips every now and then. I plan to add LEDS to my t-stat so it is easy to see if or when it is staging strips and if one or both are on. Compressor lockout is a feature that Nest thermostats have that prevents the compressor from turning on when the temperature outside is too cold. 140 0 obj <>/Filter/FlateDecode/ID[<3CF709D322C443E783719C6C5336C80E><38F9397046A91D45A8C32210A0BE9359>]/Index[98 98]/Info 97 0 R/Length 173/Prev 369212/Root 99 0 R/Size 196/Type/XRef/W[1 3 1]>>stream If you have any further questions about compressor lockout on Nest, please leave them in the comments below. Can I schedule the outside damper to go to 100% ventilation pre-occupancy? A compressor lockout is simply the temperature below which you want to use auxiliary heating (emergency heat) rather than your heat pump compressor. Y -> Y/Y1 Please enter the name by which you would like to log-in and be known on this site. n 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. When it hits the lockout temperature, it starts using the auxiliary heat on the system based on the lockout temperature is set on the system. Sometimes, the indoor and evaporator coil gets clogged up with dirt. The Compressor Lockout feature is a safety feature that is designed to protect your AC unit from damage. R Provide the pricing and I'll work the numbers for you. Why is cool running before the schedule starts? The balance point temperature is about 25 F in this case. W Here are the steps that you will have to do to fix this issue: Dirty filters are one of the main reasons why a compressor lockout happens. No matter which setting you choose, Heat Pump Balance determines how often . The C.O.P. Do ventilation rates adjust based on fan speed? Copyright Compressors lock-out is available on different thermostats and systems but usually, it wont be explicitly displayed. How do I add a second gateway to my existing site? C -> Not connected When programming the thermostat, the electrician set it as if I had a Multi-Stage Heat Pump. A switch inside of a compressor keeps track of the pressure caused by materials in the tank of the device using the compressor. What are Parallel Fan Powered Variable Air Volume (PFB-VAV) systems? 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. LG French Door Refrigerator Not Cooling or Working? 3. As for calculating costs, the gas company uses a fairly simple formula so it's pretty easy to calculate the total cost per therm used (about $1.44 at the moment). Can a PEARL adjust the outside damper for different fan speeds? The outdoor unit has a condenser fan to keep the compressor cool. Can I set a Pelican gateway for a static IP address? 0 Can I set utility electrical and gas costs into Pelican? I'm trying to replace my Honeywell thermostat T8195B w/ the Hunter 44550. Balance point can be no greater than 30F. This way, you wont have to go without heat if your heat pump goes into lockout mode. I could see the gauges but was too far away to read the chart myself.". How do I disable my entire sites ventilation in an emergency? Yes, the White Rodgers thermostat can compressor lockout. I replaced my inducer motor on my furnace a couple of years ago. Once the configuration is set, the system automatically shares a single outdoor temperature to all thermostat to be used for Compressor Lockout. Air-source heat pumps work on a novel principle: instead of directly producing the heat that you need to keep warm through the winter, theheat pump will find heat energy in the outside air and bring it into your home, using refrigerant as the medium of heat exchange. When will a heat failure notification be generated? You are fine running your heat pump at 25F and below. When will a thermostat unreachable notification be generated? Were proud to serve homeowners in Hamel, Edwardsville, Troy and other southwest Illinois communities. (enter 44550) [url]http://www.hunterfanhq.com/hiw-prod/orderinv/frames/ps_frame.htm[/url] If youre not familiar with how compressors work, they are responsible for cooling the refrigerant in your AC system. This is usually caused by a pressure imbalance in the system, which can be caused by a variety of factors. At that temperature, the heat pump is just able to keep up with the how much heat the house needs. Replace a new conventional HVAC system with a heat pump system? Lockout mode on a compressor means that it will not work until the user has manually reset it. When the outdoor temperature falls below this limit, the heat pump will shut off to prevent damage. Piero Fusco. Recommendations? Is this normal. Additionally,airlucent.comparticipates in various other affiliate programs, and we sometimes get a commission through purchases made through our links. Set Compressor Lockout to the temperature below which it is inefficient to run the heat pump. Your tech is full of sh%t and just making an excuse. Can a PEARL open a two position outside damper? How do I create limited set-point override periods? The HeatPump Aux lockout (setting 360) set to 40 degrees F, or 4.5C. Can I schedule when Fan Circulation Minutes is active? Helping You to Do It Yourself! There's also the matter of the outside temperature your Ecobee uses not . Is it dependent on how far apart the desired and actual temperatures are for the "Aux" to turn on? How do I make a delete a shared schedule? Since it would need to operate at a COP of 3.6 just to break even with a 90% efficient gas furnace. Is this true with a Good afternoon, everyone; Why is the gateway not green on the network map? Joseph loves to talk about HVAC devices, their uses, maintenance, installation, fixing, and different problems people face with their HVAC devices. When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions. This could be 0 or -10F. Now that its cold it seems to run constantly. I live in Central Indiana, so temperatures below 40 degrees are pretty common from late fall to early spring. I'm not sure if it's more cost effective to run the heat pump, strips, or both depending on temp Around here we tell people to set it or just go on over to AUX when its down to around 20oF. I assume that the lower the setting, the more often the unit must defrost. My Trane with dual-fuel control is set to lockout the compressor and switch to the backup gas furnace at 28 deg. Joseph is an HVAC technician and a hobbyist blogger. Can I set a mixed air low limit for a PEARL? What are Dual Duct Variable Air Volume (DD-VAV) systems? When will an Economizer position failure notification be generated? How do I pay for multiple site subscriptions? This is an old method of cooling systems. Heat pumps are equipped with a reverse valve that switches the direction of the refrigerant, enabling the heat pump to work as a heater in one position and an air conditioner in the other. Compressor lockout protects your compressor from overheating by preventing it from turning on when the temperature outside is too cold. A compressor lockout is a device that is used to prevent the compressor from running when there is no demand for cooling. A compressor has a safety mechanism that helps prevent danger by shutting it down. As a homeowner, you may not think about your air conditioner very often. We provide heating, air conditioning, geothermal, heat pump, furnace installation, repair, and maintenance in Hamel, IL and the surrounding areas: Maryville, IL | Glen Carbon, IL | Greenville, IL | Edwardsville, IL | And More, Spring Cleaning Hacks for Your HVAC System, Our goal is to help educate our customers in, Hamel, Alton, Glen Carbon, Highland, Greenville, and Troy, Illinois and surrounding areas. How do I stop a phone number from receiving text notifications? How do I lock and unlock a thermostats keypad? This will cause the system to overheat its compressor which causes a low-pressure cutout. 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. What should my gas furnace lockout be set at? When outside temperature is below this setting, thermostat will It is used in various air conditioners for its reliability. I have switched it back and forth between 15 and 20 and think 15 works better here. When the pressure falls under a specific limit, the compressor starts overheating. B All rights reserved. %%EOF How does a thermostat control a two speed fan? You will need to send a request to Pelican Technical Support to add this configuration to . When the temperature outside drops below a certain point, the sensor triggers the compressor lockout feature. My parents had a Nest and ended up switching back to their old thermostat. What do the symbols on a Pelican thermostats display mean? On my system, they are set as follows: When your outdoor temperature drops too low, your heat pump wont be able to keep up with warming your home. In an air-source heat pump, the COP is a 2-4: you get two to four times as much heat out as you put energy in. 1y. 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. How do I configure a Pelican thermostat to control a hot water, steam, or chilled water floating actuator? Can a dirty compressor cause high-pressure lockout? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The compressor is the part of your HVAC system that pressurizes refrigerant and circulates it through the coils. var q1ezhd9u1df5n34; (function(d, t) { var s = d.createElement(t), options = { 'userName':'cornerstonead', 'formHash':'q1ezhd9u1df5n34', 'autoResize':true, 'height':'662', 'async':true, 'host':'wufoo.com', 'header':'hide', 'defaultValues':'Field6=' + encodeURIComponent(encodeURIComponent(typeof wca == "undefined" ? "" Is there a purge cycle at the end of a heating or cooling cycle? When the compressor gets clogged up or the air filters of the compressor get dirty, it causes the compressor to cause problems. If I leave it set to 25 degrees then I suspect I'll be charged for all service calls and maybe even any future repair costs. Natural gas at $1.44 per therm, 80% efficient furnace:(1,000,000 / 100,000 btu per therm) x 1.44 / .8= $18. Houzz Pro: One simple solution for contractors and design pros, New project for a new year: Swap your conventional heater for an energy-saving model and dont be fooled by misinformation, Keep dollars in your pocket and preserve a precious resource with these easy DIY strategies, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Fort Collins Home Automation & Home Media, Glendale Heights Home Automation & Home Media, Safety Harbor Home Automation & Home Media, Windsor Locks Home Automation & Home Media. The fan came on and started to blow out [I]moderately[/I] warm air. Usually when the outside temperature is above 30 it uses heat pump only but when its close to 30 it uses the back up gas furnace. What is the economizer sequence of operation? The system is on the EMG HEAT setting, as instructed by both the electrician AND Honeywell Customer Service. Compressor lockout is an essential safety feature. Thanks for reading. If yes, how do I know if I have 2 heating & one cooling (or any other combination) without checking the wiring? I did Heating Cost Calcs that looked at the COf using the discounted DTE winter rates (5.5 c/Kw). Now the owners manual says the unit will "continue to operate efficiently at outdoor temperatures below 0 degrees F". Good thing its not for money saving. Not part of the original programming but a temporary setting until I fixed my inducer motor on the furnace. home improvement and repair website. %PDF-1.7 % Set Compressor Lockout to the temperature below which it is inefficient to run the heat pump. Save my name, email, and website in this browser for the next time I comment. To check if your Nest thermostat has compressor lockout, open the Nest app and go to Settings > Equipment. If your heat pump goes into lockout mode, youll need to switch to another heating source, such as a furnace or space heater. How does a thermostat control two stages of heating? Pull off your nest thermostat from the wall and double-check your thermostat wiring. I have a Lennox EC10Q3-20 furnace about 20yrs old and there's a separate air conditioning unit on the outside of the house. What zone controller do my thermostats communicate with? How does a PEARL control a Variable Speed Fan (VFD)? What is on a rooms climate control page? You need to figure out your economic balance point for the switchover from heat pump to gas furnace. How do I change a Pelican gateway from static back to DHCP? Check Compressor Lockout settings a. How to reset compressor lockout? 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. Hes been working as an HVAC technician for almost 13 years, and he started blogging just a couple of years ago.