if the compressor cannot reach or maintain temperature setting, both the compressor and electric backup heat will operate. Yorkguard VI - Aux Heat Stuck On - GHAC :: Knowledgebase The sensor enables the thermostat to set an outside temperature (typically around 35 F) above which it will not allow the AUX HEAT heat strip to turn on. If set to a specific temperature (i.e. Auxiliary Heat Lockout function - Houzz Auxiliary Heat Lockout 32F to 70F Compressor Heat Lockout 5F to 70F Cooling Setpoint Temperature Range 60F to 99F, 1F resolution Heating Setpoint Temperature Range 55F to 99F, 1F resolution Indoor Temperature Display Range -40F to 122F Outdoor Temperature Display Range -40F to 140F Once its on, it stays on and heats the . Because the temperature rise is more than 3 degrees (it's 6 degrees in this scenario), the . Heat Pump Lockout (in HYBRID HEAT SETUP) is the outside temperature below which the heat pump will not run (otherwise known as the balance point). For example, if your AUX lockout temp is 40F or 4.4C, then AUX heat will come on when the outdoor temperature drops below 40F or 4.4C. Cool Setpoint: The warmest temperature that the space should rise to before cooling is turned on (without regard to deadband). Limiting the use of auxiliary heat can be an effective means of saving money. 2 Droop control with aux heat lockout 0346 Dual fuel heat pump upstage to furnace timer ** 1 1 hour 0 Off [Other options: 0.5, 1.5, 2-6, 8, 10, 12, 14, 16 hours] 0347 Droop temperature 2 2F (1C) [Other options: 2-5 (2F to 5F/1C to 2.5C)] 0350 Heat pump compressor lockout 0 No heat pump compressor lockout You are asking your furnace to work too hard to maintain a comfortable temperature. 0: No auxiliary heating temperature lockout 40,45,50,55,60: heat pump auxiliary heating temperature lockout. Display always says "aux heat active". The Bryant Heat Pump has a HSPF of 9.5. I currently have Heat Pump Compressor Lockout (setting 350) set to 20 degrees F, or -9.5C. iii Glossary of Terms Auto-Changeover: A mode in which the thermostat will turn on the heating or cooling based on room temperature demand. York Heat Pump: YorkGuard VI. 731. Re: Aux Heat Stuck On The auxiliary heaters stick on and the customer reports overheating of the controlled space. These sensors are for dual fuel systems and just to read outdoor temp. 0 comments. Air-source heat pumps work on a novel principle: instead of directly producing the heat that you need to keep warm through the winter, the heat pump will find heat energy in the outside air and bring it into your home, using refrigerant as the medium of heat exchange. When the Aux Heat switch is in the Emergency position the compressor will also be locked out during cooling operation. The ecobee will run the second stage of your aux heat if the current temperature is greater than the value designated in the Aux Heat Stage 2 Temperature Delta setting. However, when the outside temperature is 32 F or below, your auxiliary heat will usually turn on automatically. (default 15F) Setpoint differential can be set at -9F, -7F, -4F, and -2F (default -2F) Heating Demand off If outdoor temperature is in-between the high and low balance point . 2 Droop control with Aux Heat Lockout** 20 Droop temperature (dual fuel) (EIM only) 2 Auto temperature droop 2 F (1 C) [Options: 2 to 5 (2 to 5 F / 1 to 2.5 C)] 21 Dual fuel upstage to furnace timer (EIM only) 1 1 hour** [Options: 0 (off) to 16 hours] 22 Outdoor air sensor? But for it to be effective at doing that, there needs to be enough heat energy available - and as the temperature drops . Considering this, what is auxiliary heat on nest? Available settings are: Off, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55. Tap Heat Pump Balance. Normal - Aux Heat is allowed to run, if necessary, heat demand. The Lockout temperature is set lower than usual but not to the lowest setting. The fault code 196auxiliary input (G) shutdowns could indicate a few different things, basically it is . This sensor is not for standard heatpump systems. The temperature outside is 21 degrees. You will always (no matter what temp it is outside) get more heat out of the HP then what you put in. Outsid read more Furnace Lockout (in HYBRID HEAT SETUP menu) is the outside temperature above which the furnace will not run except for defrost (otherwise known as the aux heat lockout). If it gets colder outside than the set lockout temperature, your heat pump will use AUX heat. To adjust Heating temperature: Press the red HEAT button. iii Glossary of Terms Auto-Changeover: A mode in which the thermostat will turn on the heating or cooling based on room temperature demand. It is a brand with decent quality products for long-term use. The auxiliary heat would go on (if needed) if the outdoor temperature is below the lockout temperature that you set. If you have a central HVAC (heating / ventilation / air conditioning) system called a "heat pump", and live in an area where the temperature in the winter goes below about 50F (or 10C) then you probably have something called "emergency heat" or "auxiliary heat". I'm in wetern NY with 2 stage heat (main-heat pump and aux-electric strips). The heat pump lockout temperature can be used to force a switch from heat pump operation to auxiliary heating. In advanced setup it has "electric lockout" set to 40 degrees. The Emergency Heat setting should only be used when the outdoor unit of your heat pump system is not working properly. heat there is no place in the temp range where both systems can operate. COOL will allow only operation of the cooling system. Lockout - Aux Heat will never turn on regardless of the heat demand. This thermostat is equipped with the latest technologies to provide awe-inspiring results in controlling the temperature. Select your thermostat. 1. Setting temperature lockout on Trane Heat Pump. If outdoor temperature is below the low balance point, only auxiliary heating will operate - default 25F (-4.0C) low. Balance Point. 1. You really would need a higher end thermostat to control an aux lockout temperature. I noticed that the auxiliary heat lock out function is turned off on the XL900. Max savings does not work for me because it uses auxiliary heat if I turn the thermostat up more than 2 above what the current inside temperature is. Auxiliary heat lockout with outdoor sensor or Internet weather. Aux heat will turn off once your home reaches the thermostat set point. If outdoor temperature is below the low balance point, only aux-iliary heating will operate - default 25F (-4.0C) low. sensor E Auto Discover ** 0 No 1 Yes Setup function Settings & options (factory default in bold) Installer setup **See pages 6 & 7 If the outdoor ambient temperature is greater than the temperature you set, the auxiliary heat outputs (W1 and W2) are not energized. If outdoor tem-perature is above the high balance point, only the heat pump will operate - default 50F (10C) high. This ISU is only displayed if ISU 200 is set to Heat Pump, AND ISU 260 is set to Thermostat control AND if ISU 221 Aux/E stages = 1. compressor lockout auxiliary lockout compressor and fan only compressor and fan operate outdoor temp electric backup heat and fan only. 22. The temperature outside is below 35. Option 08 Auxiliary Heat Lockout Temperature This selection is available on heat pump systems with a valid outdoor temperature sensor connected. As far as your comment that it would be a waste of energy to run the HP below -10C is not true. Heat Pump Temperature Lockouts (with electric heat backup): If the thermostat is installed with an optional outdoor sensor, you can select a compressor lockout temperature (Function 0350) and/or an aux-iliary heat lockout temperature (Function 0360). Used for aux heat lockout on TH6220WF model. The thermostat defaults to that setting during . To limit auxiliary heat and lower your heating costs, a critical first step is to set a lower indoor temperature. The Yorkguard VI board controls Aux Heat operation through the W1-Out and W2-Out terminals. If outdoor temperature is below the low balance point, only auxiliary heating will operate (Default 25F low). If outdoor temperature is in-between the high and low balance point, both the heat pump and auxiliary heat sources can operate. What are the best or most cost effective settings for the compressor lockout (balance point) and heat pump aux lockout? The following product in our list of best thermostat for heat pump with auxiliary heat is from the brand Emerson electric.. Answer (1 of 3): There's 2 ways to prevent the auxiliary heat from running on that stat. When the outdoor temperature drops below this setting, the thermostat will stop using the heat pump for heating and only use the auxiliary heat. Selecting Your Desired Temperature and Mode The Heat or Cool Setpoint is the temperature the room has to reach before heating or cooling will turn off. But for it to be effective at doing that, there needs to be enough heat energy available - and as the temperature drops . Get the installation instructions and change the system designation to "1 heat, 1 cool" heat pump. Auxiliary (Strip) Heat Lockout PTCS Spec: Set auxiliary heat lockout to 35F or lower. Aux Lockout : Use this parameter to set an auxiliary heat lockout temperature. Option 9 (Heat Pump Lockout): Set at Of(f), the compressor (heat pump) will always run (with the auxiliary) no matter how low is the outdoor temp. Outdoor Sensor Provides Outdoor Temperature Setting to Lockout Auxiliary Heat Remote Sensor Options 1 Indoor or Outdoor Power Source Battery, Hardwire, Power Stealing Auto Changeover (Heat/Cool) Yes Fan Option Auto, On, Programmable Fan or Comfort Circulating Fan . Aux heat lockout based on outdoor temp: Heat pump lockout based on outdoor temp "Programmable output (time/temp/external/free cooling/venting)" Outdoor sensor ready: Hi/Lo outdoor temp for the day: Control to, or, monitor remote sensor: Can average 1 remote sensor with thermostat: Can average 1 remote sensor with thermostat: Equipped with . heat - Is only available with heat pump system. Auxiliary heat is allowed to operate whenever sufficient demand for heat is available. Source-1 3024-6881/D or similar) doesn't require a special stat. Controlled through: Thermostat connected to Wi-Fi weather station. For example, let's say that you wake up to a cold home (62 F) and immediately raise the thermostat to 68. Above this I am running a Lennox XP25-048 Heat Pump, a CBK40UHV-048 air handler, an iComfort S30 Wi-Fi Communicating Thermostat, and 9kw ECB40-9CB electric heat set at a 40F "ambient temperature" lockout. Likewise, is it normal for AUX heat to come on? Heat has been set to 69 all day, not trying to raise temp, just keep it steady. The outdoor unit, variable speed air handler are communicating models with the XL900 thermostat and the outdoor unit monitors the outdoor temp. It comes on because your heat pump cannot keep up with the load. The Aux heat is on. In many situations, it's a combination of both. This feature is especially useful for Hybrid Heat dual fuel applications where the . Not included with thermostat. Auxiliary heat/ Emergency heat help the heat pump keep up when cold outside or the temperature differential on the thermostat is large. What should they be set on to bring the temperature back to where it is set? Emergency heat is usually one or two 5KW heating elements strips that are used when there's an issue with the heat pump (during normal heating operations) or to slightly heat the air when the . I have a 2 stage geothermal heat pump (climatemaster) with a 2 stage gas furnace as backup (connected to W1/W2) and an American Standard (rebranded Trane) 824 thermostat. how do I set my auxiliary heat lockout? If an optional Outdoor Temperature Sensor is installed, the auxiliary heat lockout option can be used. I just made the change two days ago and the temps have been in the 40's so the 1st . Aux. If you're lucky, the cable between air handler and heat pump has an unused pair that can be used. . Dual Fuel Heat Pump and Outdoor Temperature . The whole system is only about 1 1/2 year old heat lockout which allows both to run when needed. * TSTATG2100-2 BATTERIES COOL OFF FAN HEAT AUX HEAT NORM EMRGC'Y LOCKOUT AUTO HEAT 75 ON For example, with an auxiliary heat lockout of 40F, only the compressor will run above that temperature. So I would like to lock out the auxiliary heat at a temperature lower than 40 degrees, which is the lowest temperature that the thermostat seems to allow. When the weather outside gets colder than your lockout temperature, your thermostat will start using AUX heat. Exterior walls and other walls that have a temperature differential between the two sides Close proximity to heat sources such as sunlight, appliances, concealed pipes, chimneys, or other heat-generating equipment Drafty regions Dead spots behind doors, projection screens, or corners Walls subject to high vibration If outdoor temperature is in-between the high and low 35), the compressor is locked-out and ONLY the auxiliary will run when the outdoor temp drops below the specified temp. Economy is more of a concern rather than getting the temperature up to the morning set point as rapidly as possible. This tells the stat that there is no auxiliary heat. The Ambient temperature data is communicating to the ONE+ through the weather service, therefore the Wi-Fi connection is necessary for AUX heat logic to execute. For context, On the coldest darkest (low of 35F high of 45F) of days we can use about 40kWh of electricity across all appliances. Your heat pump may turn on earlier to reach your target temperature, and your lockout temperature will be set to a lower temperature which means AUX heat will typically turn on later and less often. Range is 0 - 10F (0.0 to 5.56C) with increments of 0.25F (0.14C). P1P2 Or S21 balance point temperature, only the fossil fuel (auxiliary heat) . 1 1 Will start soon 2. OF (off) -- function is disabled. Dual fuel and aux heat lockout with outdoor sensor or Internet weather. For example, if your AUX lockout temp is 40F/4.4C, then auxiliary heat will come on when the outdoor temperature drops below 40F/4.4C. If set to a specific temperature (i.e. I noticed that the auxiliary heat lock out function is turned off on the XL900. 35), the compressor is locked-out and ONLY the auxiliary will run when the outdoor temp drops below the specified temp. But on the Nest Thermostat itself, the term "Lockout" is not used, instead you see " Use the heat pump compressor when the outdoor temperature is above ". 0350 Heat pump compressor lockout 0 No heat pump compressor lockout [Other options: 5-60F (-15C to 15.5C)] ** See page 11 0360 Heat pump only electric heat operates. Aux Heat Lockout requires an outdoor temperature. I know my thermostat doesn't have an . Air-source heat pumps work on a novel principle: instead of directly producing the heat that you need to keep warm through the winter, the heat pump will find heat energy in the outside air and bring it into your home, using refrigerant as the medium of heat exchange. Question: At what temp and humidity level would be a good cut off point to transition to backup Aux heat? I can't find it anymore. When programmed for fossil fuel aux. Does this mean that electric will not come on above 40, or electric will always come on below 40? The aux heat indicator on your thermostat lets you know when this is happening. I 2nd Barbara's sentiment. We also have our CPH set to 1, 1, and 1 (for 1st stage, 2nd stage, and aux heat.) Tap Settings . Heating is confirmed when the red LED adjacent to the red HEAT button is lit. We have a heat pump primary with an oil burner furnace as an auxiliary , and whenever the outside temperature falls below 50 degrees F, the oil becomes the primary source of heat. Thermostat Front Thermostat UWP Medium Cover Plate 4.08" (103.6 mm) 4.08" (103.6 mm) Similarly, at what temperature should auxiliary heat come on? There are two main reasons as to why this may happen. Model TH6220WF2006: Up to 2H/1C Heat Pump systems or up to 2H/2C Conventional systems. Up to 3H/2C Heat Pump systems or up to 2H/2C Conventional systems. The restricted mode lockout typically has a 4F dead band meaning that a compressor locked out at 40F would not resume operation until . Using Auxiliary Heat with a Nest Thermostat. Outdoor temp not displayed on thermostat. It seems any change in setpoint causing the furnace to kick in (even in mild weather). Code 88-Inverter Temp Lockout or High Contactor Shorted; Code 96- VDC Under Voltage Lockout; . heat pump will operate - default 50F (10C) high. Will start soon - A 5 minute safety delay prevents the compressor from operating too soon after shut-down to allow internal pressures to equalize. @Joe, an outdoor lock-out (e @Joe, an outdoor lock-out (e.g. If it's 30 degrees outside, it is unreasonable to expect the system to maintain an indoor temperature of 78 without using the heat strips. The unit is the Trane XL 20i system with the XL900 Trane thermostat. Off Turning off Heat Pump Balance means that the AUX heat only kicks in depending on what you set as a lockout . Used for dual fuel, aux heat lockout, or vent lockout on TH6320WF model. There use to be a user setable lock-out temperature whereby the heat pump set to "heat" would not operate below a certain temperature. The unit is the Trane XL 20i system with the XL900 Trane thermostat. That is, if the thermostat is set for 70, the thermostat engages at 69 and goes off at 71. Last night and today it has been about 30 outside. Pop the stat off the wall, using a tiny screwdriv. The setting range is different depending on the model of thermostat, so make sure that it has the lockout temperature range that you require for your application before you buy it. If the outdoor ambient temperature is less than the Balance Point setting and above LTCO and a W input is received with a Y1 input, the control . Like mentioned above, the auxiliary heat will turn on when the temperature . Aux. Your outdoor heat pump is unlikely to be able to hold up under these . Select a Heat Pump Balance setting. between the high and low balance point, both the heat pump and auxiliary heat sources can operate. Oftentimes, the aux heat is coming on because the temperature in the home is set too high. I have messed with the outdoor lockout heat pump setting and the outdoor lockout back up heat settings. Aux Reverse Staging: With this setting enabled, you will also need to enable the Aux Heat Stage 2 Temperature Delta threshold setting listed above and set a temperature value. The outdoor unit, variable speed air handler are communicating models with the XL900 thermostat and the outdoor unit monitors the outdoor temp. The temp in the house has been dropping. Specifications (all models): Ventilation control with ERV/HRV or fresh air damper. Answer (1 of 4): There are 2 types of separate heat with a heat pump, Auxiliary heat and emergency heat. Heat pump auxiliary heating temperature lockout option This option apply only to HP1 HP2 setting in system type option and only works when remote sensor option (menu 24 item 20) is set 2. There isn't enough heat getting to the heat pump. Outdoor unit control board or mechanical lockout. I have a vision pro tstat with temp sensor outside. None: None, 5F to 55F in 5F increments 01-25-2013, 08:32 PM #14 Based on the brochure the COP is 3.68 @ 47F and 2.7 at 17F. This adjusts how far below the set point the temperature must fall with the heat pump at 100% before allowing electric heat to come on. Wired indoor sensor C7189U1005 Not included with thermostat. Press or to adjust temperature Press or the MODE Icon HEAT will allow only operation of the heating system. That is not how it is designed to work. Also select an auxiliary lockout temperature (Function 0360). I found that if I programmed for electric back-up I could set the compressor lockout point and aux. ( See menu item 22 explains how it work) 23. The thermostat defaults to that setting during . Set Aux Heat Lockout to optimize energy bills and to not allow it to run the more expensive Aux Heat source above certain outdoor temperature limit. Aux Heating Activation Threshold This is an adjustment to hasten or delay the auxiliary heat activation. (EIM only) 0 No 1 Yes 24 Heat pump compressor lockout Please Note: if OAT is less than Auxiliary Heat Lockout temperature setpoint the auxiliary heat may engage e. Each test wil l run for a maximum of 60 minutes or until manually terminated : f. Wait at least 10 minutes before taking static pressure readings and inserting flow plate for TrueFlow plate It has a turn-pot to set the cut-out temperature and simply interrupts the Aux control wire between stat and air handler. Option 9 (Heat Pump Lockout): Set at Of (f), the compressor (heat pump) will always run (with the auxiliary) no matter how low is the outdoor temp. Perhaps you feel most comfortable in the mid-seventies, but the air outside is dipping below freezing. We also use an outdoor temperature sensor with an auxiliary heat lockout. When the temperature inside your home drops a certain amount below the goal temperature (usually 1.5-2 degrees), your thermostat energizes auxiliary heat. If the thermostat is being used as a Heat Pump thermostat (DIP Switch #1 in the ON position and an outdoor sensor (10-529 or RS300-529) is connected to the remote sensor terminals, the thermostat can be configured to disable the use of auxiliary heat during warmer weather and to lock out the compressor during colder weather. Auxiliary heat can also be prevented from operating above an installer selected outdoor air temperature. If outdoor temperature is above the high balance point, only the heat pump will operate (Default 50F high). This is where the "electric heat lock out" comes in. Ambient lockout - This indicates that either the outdoor temperature is The temperature below which you want to use Auxiliary heat (rather than the heat pump compressor) is referred to as the "Compressor Lockout" setting in the website and app interfaces. Our temperature swing is +/- 1 degree (f) around the set point. Many homeowner misuse this setting more than any other. Heat Is only available with heat pump system. Heat Pump Temperature Lockouts. Set-up of Heat Pump as Primary Heat Source Note: the heat pump lockout and the AUX heat lockout are based on the ambient temperature data. Aux Heat adjustments w/ Trane 824 thermostat. If you lock out your aux heat al low temps your house will not stay warm. If you have a heat pump with AUX heat, your Nest thermostat will use Heat Pump Balance to determine your lockout temperature automatically. Incorrect lockout settings result in the majority of inspection failures. Most heat pumps are designed to automatically switch to AUX heat when the indoor temperature is 3 degrees colder than the thermostat setting. Auxiliary Heat as Primary Heat Source When auxiliary heat is the primary heat source: Heat pump lockout temperatures are adjustable from -20F to 65F in 5F increments. 0360Heat pump auxiliary lockout 0 No heat pump auxiliary lockout ** [Other options: 5 to 65F (-15C to 18.5C)] 0365Discharge temp. The setpoint when the auxiliary electric heat (Wl) will not operate can be set between 20F and 60F (6.6C and 15.5C). Cool Setpoint: The warmest temperature that the space should rise to before cooling is turned on (without regard to deadband). Newer heat pump systems have a "smart" thermostat connected to an outdoor temperature sensor. Heatpumps have a bult in timer ( default timer) on defrost board. This function allows the furnace to run independently of the outdoor unit and overrides the auxiliary heat lockout function until a technician can resolve the problem. Auxiliary heat is the electric heat strip in your air handler that is supplemental heat. If your trying to lock out your aux heat on heatpump system change your system to something else. Note: Normal programmable thermostats have one way to control AUX heat: the AUX lockout temperature.If it gets colder outside than the set lockout temperature, your heat pump will use AUX heat. I'd like to lower this temperature lockout to about 40F so I can try to save oil. Thermostat paired with outdoor temperature sensor. Getting the temperature drops heat has been about 30 outside when this is happening Nest. That the aux heat setting should only be used when the temperature have heat pump system is How ; aux heat 40F, only the auxiliary heat ) x27 ; enough. 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