Honeywell backup heat droop. For example, right now it’s 33° outside according to the ou...
Honeywell backup heat droop. For example, right now it’s 33° outside according to the outdoor sensor and it’s using the gas furnace. TO CHANGE BACKUP HEAT DIFFERENTIAL (DROOP) SETTINGS 1. . Hi. In these cases the droop setting locks out the aux heat unless the droop condition or upstage timer setting allows the aux heat Apr 5, 2017 · Backup Heat Upstage Timer The Backup Heat Upstage Timer is available for any system with 2 heating types and the Backup Heat Droop is set to 2 °F (1. Jun 15, 2013 · 349 Backup Heat Manual Droop Temperature (Comfort or Economy) I'm guessing that this allows the backup heat to come on if there is more than a few degrees from the set point when the system is covering a large range so that it gets there quick. What are the definitions of these, and how are they used together? My goal is to have a delay before my heat strips turn on. I assumed it was turning on the electric resistance heat strips in the air handler and wasting energy so I changed the Aux Backup Heat Droop setting from Comfort to 2. Mar 14, 2014 · 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. This should happen regardless of the 30-minute delay on the heat pump control for fossil fuel backup (setup function 0345). My compressor lockout / balance point is at 30° and the Backup heat lockout is set to off. Settings vary by model, but typically include outdoor lockouts for both heat pump and backup heat. See my reply to esaym. I would Dec 7, 2022 · My Honewell TH6210U2001 thermostat is set with ISU 340 (backup heat droop) at 2. I have an air to air heat pump with 20 kw electric elements in the air handler as auxiliary and/or emergency backup heat. I'm particularly interested in ISU 340 - Backup Heat Droop and ISU 350 - Upstage Timer for Backup Heat. If I change this to say 5, I could bump the thermostat up 4 degrees and it would not utilize the aux heat correct? NOTE: If the backup heat was used in the last 2 hours because the primary heat was not able to main- tain the setpoint, the thermostat may turn on the backup heat earlier when the user raises the set- point. Dec 8, 2024 · 300 - system change over, 0 -> manual (unless you intend to use auto mode/heating and cooling in same day, i recommend strongly against it) 340 - backup heat droop is temp drop b4 aux heat energizes, if you set to 0/comfort you will use more energy but more comfortable, will bring on aux heat as soon as it detects heatpump is not keeping up. Jan 22, 2026 · Honeywell thermostats s to re heat pump settings in the Installer Setup menu, accessed through but to n combinations or installer codes. By recognizing the function of this feature and how it operates, you can optimize your heating system and ensure a consistently comfortable environment. The one my installer installed is (to my knowledge) not one designed for programming heat pumps, even though it is designed for heat pumps and it does allow programming. If it Jan 9, 2024 · I currently have an air source heat pump with backup electric strips paired with a Honeywell t4 thermostat. I found it did have the backup heat droop adjustment I wanted, but not temperature swing/differential I wanted. We would like to show you a description here but the site won’t allow us. 5 degrees. 3K views 11 replies 5 participants last post by slctech Mar 14, 2024 G Jan 9, 2019 · He installed a Honeywell T4 Pro TH411OU2002. According to Option 1 (droop control), backup heat is activated if the room temperature falls to the selected droop temperature (2 degrees), and the compressor is deactivated. ------------------ Some thermostats are now made specifically to allow programming for heat pumps. The Honeywell Advanced Setup includes ISU numbers. Sep 2, 2025 · Wondering why the backup/auxiliary heat stage comes on when you raise the temperature? Honeywell Home Support explains. 0 °C) or higher. Trying to get a better understanding of droop and upstage timer and how they work together. This does NOT apply to heat pumps with fossil fuel backup heat. 0 degrees, and ISU 350 (upstage timer for backup heat) at 0 (off). Edit: Possibly solved - by setting the Upstage Timer for Backup Heat and the Backup Heat Droop. Jan 26, 2026 · Conclusion Understanding backup heat droop on your Honeywell thermostat is crucial for maximizing comfort and efficiency in your home. He tried to tell me that temperature display offset did the same thing. I have a heat pump with back up gas furnace. Feb 9, 2020 · Here is how it is described in the smart Honeywell T10 thermostat: "The T10 only uses droop for control of the aux heat on systems with a heat pump and either electric heat strips or a gas/oil furnace as backup heat. 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. In order to compensate for the heat droop in cold weather, most heat pump systems have an “anti-droop” switch or setting on their thermostat that allows the user to adjust the temperature range at which the backup heat will be engaged. Mar 12, 2024 · Honeywell Vision Pro 8000 Back up Heat Droop not working Jump to Latest 2. Feb 10, 2024 · My backup heat droop/ISU 340 was set to 0 (comfort). I found the thermostat showing “Aux Heat On” in the mornings when the schedule changes to Daytime mode 2 degrees higher than Nighttime. I googled and experimented with it and I'm sure you already know that was incorrect. ljxhaj heee vqczwwo qhxwxd zfnv wfmcch zbfcv bxwak dvuvldu ojxzwxpf
