Honeywell hz311 zone 3 red light

Honeywell manual users zoning 2321 system wiki userHoneywell zone Honeywell truezoneUpgrading 2 wire tstat wiring question- honeywell — heating help: the wall. Honeywell replacing mm thanksMy hz311 honeywell unit had a zone 3 red light. what does this mean Honeywell hz311 wiring diagramHeat pump, installation guide, connect power.

The TrueZONE® HZ432 is a 4 zone panel that can be used to control conventional, heat pump, or dual fuel applications up to 3H/2C. It features robust push terminals, common-sense LEDs, variable-speed fan control, and has a small footprint for mounting flexibility.Welcome to my YouTube channel!For all your business management needs, I highly recommend using Jobber. Whether you're an HVAC professional or any other servi...Dec 5, 2023 · Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read more My HZ311 has the zone 3 light red and the heating isnt working in that part of the house we had a power outage last night if that helps ... The Honeywell zone unit Hz311 is flashing purge. Then the heat tried kicking on. Purge not flashing, heat light is red, zone one green and zone 2 & 3 red. ...There is a red light in system that is blinking 3 times. All air filters have been - Answered by a verified HVAC Technician. ... I have a Honeywell HZ311 multi zone system. The 3amp fuse blew, so I replaced it with an ATC fuse. The power was restored and the purge light was solid Yellow.

HVAC Technician: RobHVAC. ok that makes sense since you have a zone system. Ok so what this tells me so far is that you either have. 1. loose wire. 2. bad gas valve. 3. bad control board. on the gas valve please make sure the connections are all tight. and also on the control board.My HZ311 has the zone 3 light red and the heating isnt working in that part of the house we had a power outage last night if that helps ... My Honeywell hz311 zone 2 and 3 have a red light. Zone 1 (downstairs) works just fine. Upstairs does not blow at all.Red light next to zone 1 on unit display - Answered by a verified HVAC Technician. We use cookies to give you the best possible experience on our website. ... I have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. Air filter is fine.Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read moreJul 28, 2021 · From https://www.justanswer.com/ythiJustAnswer Customer from San Antonio, TX: Hello, I have a Honeywell HZ311 zone panel and zone 3 has a solid red light, wh... Flashing red heat light. Contractor's Assistant: Im sorry to hear that youre experiencing a flashing red heat light, but our HVAC Technician will be able to help you diagnose and resolve the issue. Can you provide the make and model of your HVAC system? Honeywell hz311Welcome to my YouTube channel!For all your business management needs, I highly recommend using Jobber. Whether you're an HVAC professional or any other servi...

Zone 1 is green, zone 2 red and zone 3 green light. Not sure what - Answered by a verified HVAC Technician. ... I have a honeywell hz311 3 zone system in a upstairs an downstairs home. i have both thermostats set at 71 degs up and 71 degs down but the thermostate down stares maintains the 71 deg and the upstair ...Kit includes HZ311 zone panel, C7735A1000 discharge sensor, and AT140A1042 40 VA transformer. 3 zonesand 1H/1C conventional heat only. SPECIFICATIONS . Input Ratings: 6.5 VA for HZ311 zone panel. Voltage: 18-30 VAC 50/60 Hz transformer of 40 VA or more. Current Draw: Zone Panel: 6.25 VA max. All VA specifications at 24 VAC.The damper for the zone my bedroom is in is set to 1, and the other zone was set to 3, but i set to 1 as well and the flow does not seem to have changed at all, so i'm wondering if i may be messing around with the wrong thing. The main unit is a Honeywell HZ311 that the zone dampers are connected to.Honeywell hz322 Heat 1 solid red Zone 1,2,3 all green DAT is reading 63F 3 Thermostats set to Heat, auto fan, 68. Actual temp ranges from 60-63 in different rooms. ... It is an ideal solution for residential and light commercial applications where individual comfort control is desired. General. Brand: Honeywell: Model: TrueZONE HZ322: Product ...

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The red light in honeywell hz322 control board in attice for secondHoneywell zone panel, truezone® 3-zone panel, 11-1/2 height (in.), 8 Honeywell home hz312 truezone hz311 zone control panelHoneywell panel stage multi write review first.Your comfort zone exists for a reason. It’s what you’re used to doing regularly. If you want to be better at getting outside that zone, make it a habit to do uncomfortable things. ...The system was installed in 2012. Thanks in advance. Ok, so I turned off the zone 1 thermostat before I went to bed, and thankfully zone 2 (my bedroom) continued to work fine. First thing this morning I turned zone 1 back on and it worked normally, blowing cold air. The once-red light is now green.Hi , red light blinking on zone 2 , honeywell HZ311, just replaced battery on thermostat, shutted power off , waiting for 30 minutes. Issue is compressor turns on when is on heat . ... My Honeywell HZ311 zone controller is showing a,red light for zone 3 and the AC is not working on the second and third floors. This is a new house in 2016 and ...HZ311 blinking red light on heat indicator. Carrier about 2 years. Turned breaker on and off and then thermostatsts. ... Getting a blinking red light on my HZ311 zone panel. *is not turning on ... Hi. The red heat light is on for my Honeywell HZ311 panel. Heat is putting out cold air. ...Honeywell HZ311 LED. We have a 2 zones, Trane AC and Gas heat single stage (2018), Honeywell HZ311 True Zone and 2 Honeywell 7 day programable thermostats. The system is working OK, i.e. we got heat. What is a mystery to me is the LED of the HZ311 showing RED for heat, dampers when I thought they should be green.

In short when the condenser is blocked as seen in the image below clean it and run your ac again. That should fix the red light. 3) Malfunctioning condenser fan. Another thing thing you want to check when honeywell is flashing a red light is check that your AC condenser unit is turning on and the fan is spinning. If the fan is not spinning …Jan 27, 2023 · In short when the condenser is blocked as seen in the image below clean it and run your ac again. That should fix the red light. 3) Malfunctioning condenser fan. Another thing thing you want to check when honeywell is flashing a red light is check that your AC condenser unit is turning on and the fan is spinning. If the fan is not spinning you ... 1. Low Battery Warning. One of the most frequent reasons for a red light is a low battery. When the thermostat's battery power is running low, the red light may start blinking rapidly or remain lit steadily. This signal prompts you to replace the batteries promptly to ensure uninterrupted operation. 2.Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read moreI have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. Air filter is fine. ... My Honeywell HZ311 zone controller is showing a,red light for zone 3 and the AC is not working on the second and third floors. This is a new house in 2016 and ...Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read more Page 3 HZ311 TrueZONE SPECIFICATIONS • CARACTÉRISTIQUES TECHNIQUES • ESPECIFICACIONES Input Ratings: High Limit Setting: Voltage: 18-30 VAC 50/60 Hz transformer of 40 VA When DATS is used, high limit is fixed at 160°F (71°C). or more. High limit should be approximately 15 degrees below furnace high limit. My home uses a Honeywell HZ311 zone system. Currently I'm not getting any air out of the vents. The HZ311 has red lights for zones 1 and 3 and a green light for zone 2. Contractor's Assistant: Did you double-check the thermostat's settings? And what about the filters? Both thermostats were set below the current temperatures and the filters are ...Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read moreView and Download Honeywell Home TrueZONE HZ311K installation manual online. Zone Panel Professional. TrueZONE HZ311K thermostat pdf manual download. Also for: …I have a 2-zone system with an Honeywell HZ311 that controls the dampers and thermostats. It's connected to a 36HBXB-HW air handler. When the thermostats call for heat, the Honeywell displays heat and the correct zone, the air handler starts the blower motor, but the TT terminal to the TACO SR501 does not close and so the boiler (tankless water heater) does not circulate hot water.My HZ311 has the zone 3 light red and the heating isnt working in that part of the house we had a power outage last night if that helps ... The Honeywell zone unit Hz311 is flashing purge. Then the heat tried kicking on. Purge not flashing, heat light is red, zone one green and zone 2 & 3 red. ...

My HZ311 has the zone 3 light red and the heating isnt working in that part of the house we had a power outage last night if that helps ... I have a Honeywell HZ311 multi zone system. The 3amp fuse blew, so I replaced it with an ATC fuse. The power was restored and the purge light was solid Yellow.

I have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. Air filter is fine. We can t seem tonget co … read moreGot a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read moreTroubleshooting Honeywell Zone Board Brand new install on new construction and a home inspector said the compressor wouldn't run. Btw, the HatCam cost me a f...Honeywell HZ322 "Heat 1" red light on and solid. All zones solid. No blinking lights, the unit is - Answered by a verified HVAC Technician. We use cookies to give you the best possible experience on our website. By ... I have a Honeywell HZ311 multi zone system. The 3amp fuse blew, so I replaced it with an ATC fuse.I have zone 2 and 3 red light on my hz311. Carrier and it is 3.5 years old. I have turned off the system and letting it - Answered by a verified HVAC Technician. We use cookies to give you the best possible experience on our website. ... I have a Honeywell HZ311 multi zone system. The 3amp fuse blew, so I replaced it with an ATC fuse.The Honeywell Home TrueZONE® HZ311 3 zone Panel Kit includes: 1 stage heat and 1 stage cool conventional applications Robust push terminals Common-sense LEDs Clean, professional installation Smaller footprint than standard Variable-speed fan contr. The store will not work correctly when cookies are disabled. ...Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read more3 Zone Voltage 24V LEDs Yes Auto Changeover Yes Heat Pump Compatible No ... Installation Materials-Professional Installation Guide for HZ311 TrueZONE Zone Panel (English, French, Spanish) ... The Honeywell Home trademark is used under license from Honeywell International Inc. ...The city of Amsterdam and its sex workers have had enough of crass tourists gawking and behaving badly in the Red Light District. The city of Amsterdam and its sex workers have had...

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Zoning is a method of determining how people can use land and buildings within a certain area. Zoning is a method of determining how people can use land and buildings within a cert...Honeywell hz311 truezone control panel for sale online Honeywell hvac 6e03 bc31 My hz311 honeywell unit had a zone 3 red light. what does this mean. Honeywell panel zoning resideo control ecomfort. Honeywell truezone thermostatHoneywell zone red hvac light Honeywell truezoneHoneywell truezone. The best 5 honeywell multi-zone thermostat ...Arcturus is 113 times brighter than our sun, even though it's only a little bigger. What else should we know about this red giant? Advertisement When the 1933 World's Fair opened i...I got the unit to reset, I had a yellow light solid, with three green lights solid, witnessed light off. Thought I had it, but when I adjusted the thermostats to take the chill off the house (62 degrees in the house and getting colder) I had the same indication as before, 1 flashing red light, 2 solid green lights and zone 3 dark.Troubleshooting the Honeywell HZ311 Zone 2 and 3 red light issue can be a systematic process that involves checking wiring, thermostats, dampers, and the control panel itself. By following these steps methodically, you can often pinpoint and resolve the problem. However, if the issue persists, it’s essential to seek professional assistance to ...View and Download Honeywell TrueZONE HZ311 installation manual online. Zone Panel Professional Installation Guide. TrueZONE HZ311 control panel pdf manual download.Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read moreGot a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read moreI have a Honeywell hz311 which has got a red zone 3 light and the cool light is blinking. The air handler is running - Answered by a verified HVAC Technician.I removed the Durozone controller and old thermostats. I then connected the HZ311 to the furnace board and added one "nest". I checked its operation without wiring any zone motors in. I then added my second "nest". I checked that it worked. Then I added the dampers in and ensured that the right zone called for the right dampers to open/close.May 18, 2015 · I have a multi-zone residential setup using the Honeywell Z311. When I call for the AC from the thermostat, the AC unit outside starts up and then stops after a minute or so. Sometimes shorter, sometimes longer. It's doing it on both zones. There is a flashing cool light on the honeywell z311 when this occurs. "Blinking when 45°F (7°C) DATS ... ….

Honeywell zone truezone boardsThe red light in honeywell hz322 control board in attice for second Honeywell hz311 wiring diagramHoneywell truezone. Specifications and accessoriesHoneywell zone system wiring - love & improve life Honeywell zone board troubleshooting hvacTrouble shooting new installation of honeywell hz221 zone panel. new.Thermostat. HZ311 TrueZONE. Honeywell Home HZ311 TrueZONE Manuals. Manuals and User Guides for Honeywell Home HZ311 TrueZONE. We have 2 Honeywell Home …Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read moreFrom https://www.justanswer.com/ythiJustAnswer Customer from San Antonio, TX: I have a Honeywell HZ311 and the Heat LED is RED.JustAnswer Customer from San A...Manual Honeywell TrueZONE HZ311. View the Honeywell TrueZONE HZ311 manual for free or ask choose matter to other Honeywell TrueZONE HZ311 owners. Manua. ls. Manua. ls. Honeywell not categorized · Honeywell TrueZONE HZ311 manual. 7.5 · 1. give review. PDF manual · 12 flip. English.I have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. Air filter is fine. We can t seem tonget co … read moreThe Honeywell HZ311 is a multi-zone control explicitly designed for hydronic heating applications. Page 6 of the wiring diagrams shows hydro-air wiring with the notation "Thermostats need to be configured to energize fan in heat." for the HZ311 while the same note on the same page for the HZ322 says "Zone panel need to be configured to energize fan in heat." ... the 8775A is a heat ...If the Honeywell HZ311 red light is on, it generally indicates that there might be an issue with the system like insufficient refrigerant levels, dampers that are closed …Zone 1 is green, zone 2 red and zone 3 green light. Not sure what - Answered by a verified HVAC Technician. ... I have a honeywell hz311 3 zone system in a upstairs an downstairs home. i have both thermostats set at 71 degs up and 71 degs down but the thermostate down stares maintains the 71 deg and the upstair ...A user asks why their HZ311 Honeywell unit has a zone 3 red light and no cooling. An HVAC technician answers with possible causes and solutions, such as checking the compressor capacitor and the outdoor … Honeywell hz311 zone 3 red light, From https://www.justanswer.com/ythiJustAnswer Customer from San Antonio, TX: Hi I have red lights on my HZ311 honeywellPearl Wilson: Assistant: Hi.Pearl Wil..., My HZ311 has the zone 3 light red and the heating isnt working in that part of the house we had a power outage last night if that helps ... I have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. Air filter is fine., Zoning variance is a formal process that you need to know about when starting a business. But what is zoning variance? Read more to find out. You need to start by understanding a z..., What Does the Zone 2 And Zone 3 Red Light Mean in Honeywell Hz311? 4 Reasons Behind Honeywell Hz311 Zone 2 & 3 Red Light. Reason 1: Low Refrigerant Level. Solution: Recharging the Refrigerants; Reason 2: Your Blower Motor Is Not Running. Solution: Proper Wiring, Setting Thermostat, and Cleaning Components; Reason 3: Your Dampers Are Not Opening, Hi, I have a multi-zone residential setup using the Honeywell Z311. When I call for the AC from the thermostat, the AC unit outside starts up and then stops after a minute or so. Sometimes shorter, sometimes longer. It's doing it on both zones. There is a flashing cool light on the honeywell z311 when this occurs. "Blinking when 45°F (7°C) …, I have a Honeywell 3 zone system. The purge led is a solid yellow. Zones 1 and 3 are red and won't turn on. Zone 3 is the basement and very cold so rarely does AC turn on. Upstairs is not cooling down … read more, Getting a blinking red light on my HZ311 zone panel. *is not turning on ... I have a Honeywell 3 zone system. The purge led is a solid yellow. Zones 1 and 3 are red and won't turn on. Zone 3 is the basement and very cold so rarely does AC turn on., Panels Panels from Honeywell Home All Honeywell Home Products. TrueZONE® HZ311 Panel. Description: 3 Zone, 1H/1C Panel Used for Conventional Equipment; Order #: L43-883. Internal Product ID: Catalog Pg.: 325. Mfg. #: HZ311. Brand: Honeywell Home. Box Qty: Sign In to view pricing and availability., HZ311 Honeywell zone system. Zone 2 and 3 work fine. When I turn on Zone 1, the purge and fan lights come on but the cooling light does not. After a few minutes, all zones turn green and nothing else happens. ... My HZ311 has the zone 3 light red and the heating isnt working in that part of the house we had a power outage last night if that ..., Hey Matt! I have a situation where no heated air is coming out of my registers. The Honeywell hz322 shows a red light for heat1, green light zone1 and red light for zone 2, green light for the fan. … read more, Looking for tips for photography lighting? Visit HowStuffWorks to find 5 tips for photography lighting. Advertisement With all of the technology available, taking great photographs..., Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read more, Flashing red heat light, honeywell hz311, the heater is. ... Dear HVAC God: I have a dying Honeywell TrolATemp 3 zone controller in my house (32003618-006 Rev D). The circuit board has burn marks and malfunctions when flexed - needs to be replaced., It has a red light on heat 1 and zone 1. 3 years. From last night. Heat was blinking red - Answered by a verified HVAC Technician ... I have a Honeywell hz322. It has a red light on heat 1 and zone 1. Contractor's Assistant: How old is your Honeywell unit? 3 years. Contractor's Assistant: ... I have a Honeywell HZ311., I have two zones with red and white wires connecting my hz311. System is not functioning. ... Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, ... I have a Honeywell HZ311 zone controller. T-stats call for AC and equipment outputs do not ..., This TrueZONE® HZ311 Panel is for use with conventional, single stage applications, up to 3 zones. It is compatible with the Discharge Air Temperature Sensor and operates at a maximum voltage of 24 volts. This panel also comes with auto changeover and a resettable fuse. Other features include: Robust Push Terminals; Common-Sense LEDs, I have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. ... I have a honeywell hz311 3 zone system in a upstairs an downstairs home. i have both thermostats set at 71 degs up and 71 degs down but the thermostate down stares maintains the 71 deg ..., My HZ311 has the zone 3 light red and the heating isnt working in that part of the house we had a power outage last night if that helps ... The Honeywell zone unit Hz311 is flashing purge. Then the heat tried kicking on. Purge not flashing, heat light is red, zone one green and zone 2 & 3 red. ..., My Honeywell HZ311 has a red light on. One 3 Sorry zone 3 ... My Honeywell HZ221 has a red light on zone 1, zone 2 is green as well as the fan light, however the purge light is white ..., I have a hz311 Honeywell zone board the problem is when I turn thermostat to cool it lights up on zoning board but ac condenser or fan does not turn on on the heat side there's no issue. ... My Honeywell HZ311 zone controller is showing a,red light for zone 3 and the AC is not working on the second and third floors. This is a new house in 2016 ..., Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read more , Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read more, Feb 1, 2019 at 22:44. Add a comment. I had one of these units in a two story house, and the red LED means that zone is closed, a green light means that it is open. So, for the …, I have a Honeywell EMM-3 Multizone Panel. I turn on zone 2 and only zone 2 turns on (as intended). I turn on Zone 1 and Zone 1 and 2 turn on (but the green light on the EMM-3 only shows Zone 1 on). Do … read more, Honeywell hz311 truezone control panel for sale online Honeywell hvac 6e03 bc31 My hz311 honeywell unit had a zone 3 red light. what does this mean. Honeywell panel zoning resideo control ecomfort. Honeywell truezone thermostatHoneywell zone red hvac light Honeywell truezoneHoneywell truezone. The best 5 honeywell multi-zone thermostat ..., I have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. Air filter is fine. We can t seem tonget co … read more, I have a honeywell hz311, i have a red light on zones 1 and 2 and a green light on zone 3. We just bought the house so i am unfamiliar with a 3 zone system. Air filter is fine. We can t seem tonget co air to zonea 1 and 2. When i shut the system off the heat turns on, then cycles to cool., Hi Pearl. I am reading this thread and have the same issue of a red light on the front on the HZ311 next to the word heat. https: ... I had a Honeywell HZ311 zone panel installed and am using a Honeywell Pro TH4000 thermostat in the upstairs (zone 2) and a Honeywell RTH6300B Thermostat on the 1st floor (Zone 1). ..., The truezone hz311 panel is for conventional, single stage applications for up to 3 zones (1h, 1c) at 24 volts. Save time shopping for the products you need for your next job. Lets now go into troubleshooting a Honeywell HZ311. Web honeywell hz311 is a zoning panel used to. Call 1-877-342-2087 To Find 24/7 HVAC Repair In Your Area., Honeywell - Hz311 - zone 3 red light solid - how to troubleshoot. All the red light means is that the board is telling your zone 3 damper to be closed - but it sounds like you only have 2 zones, so that's not an issue, since there's no third zone to open. Is air coming from your inside supply vents?, Wiring trane honeywell thermostat xv95 furnace hz truezone diagramweb Honeywell hz311 troubleshooting: zone 2 and 3 red lights: [solved My hz311 honeywell unit had a zone 3 red light. what does this mean. Honeywell sureset. Honeywell manual users ayoutHoneywell truezone Honeywell hz311 wiring diagramHvac service: troubleshooting honeywell zone ..., Got a Honeywell HZ311 Truezone, starting unit (no call on thermostats, OFF), fire up purge steady yellow all 3 Zones green, then pruge light off Zone 1 red, Zone 2 green, Zone 3 red, Head LED steady r … read more, I had one of these units in a two story house, and the red LED means that zone is closed, a green light means that it is open. So, for the panel on the left, the system is calling for heat, and only the Zone 3 damper is open (so the Zone 3 thermostat is the one calling for stage 1 heat.