Remove your thermostat from the wall plate. Designed for comfort with 3 fan speeds, controls with advanced LCD display, 24 hour energy saving timer & remote control; Stress-free auto evaporation in cooling mode â no bucket to empty (except in areas with high humidity). With the furnace on use a multimeter set to AC Volts, to test between terminals “R” and “C.” You should get a voltage reading of approximately 24 volts AC. It's not the heat that isn't working.... it's the blower. No, sir, the blower does not have an override that keeps the blower from running until the coil thaws. 6. So sorry I do not not much about hot water heat pumps. Cycle through the modes until the required Fan mode is displayed and leave it to activate. I hope you can find the problem soon! You should have a minimum of 24 volts AC between the G and C wires at all times. target_temp_low: yes: The lowest temperature that the climate device will allow. Usually, the black high-speed wire is used in air conditioning and maybe this high-speed winding on your blower motor burnt out. I hope you have a great and blessed day. When the thermostat called for heat, the fan blower did turn on in the AUTO position. If it does not come on then you might have a control board fan relay that is not sending 120 volts to the blower motor or a bad blower motor winding. Sorry that I can not be of much help. It's not likely to be the fan relay itself since if it were a bad relay the fan wouldn't turn on in MAN or FAN-ON mode either. If you are getting 24 volts between C and G and the fan is not running then you might have a control board problem, fan relay problem or a bad fan motor or bad fan motor capacitor. I will like to suggest that you go to Ecobee Support and see if you can get some answers there. The fan should run in AC mode and with the “Fan ON” through the green “G” connection. Ive tried changing to the White and green as well as white and red to the relay and it won’t come on. If I switch over to cooling and run the A/C for a while, then turn it off I can get the heater to work again for a few hours. As a side note, I was a bit worried of fire if the blower did not turn on. This article series explains the use, setting, and adjustment of the FAN ON- AUTO button or switch or the FAN ON-MAN switch on room thermostats. Runs all day, but after being less active at night, I have to reset power, then works again. You might have a thermostat problem. Hi Ben! Our photo (above left) shows the Fan Auto-On selector switch found on the Honeywell RTH2300/RTH 221 room thermostat. Turn the power off to your air handler and twist the g and r wires together at the tstat. create an actual 220 v circuit. Steve. You will have to take the wire nuts off the thermostat wires to test the bare wires where they are joined together. I believe I have covered the main problems. If you are getting 120 volts out of the control board and the blower is not running then I would think that you have a blower motor problem. If the temperature drops to 5°C the heating will come on to prevent the heating pipes freezing. Thanks so much for the question. I found that if i turned of the breaker to the Air Handler, and would wait 10 minutes, then turn it back on, it works normally. Everything seems to run fine however when i place the fan switch to the on position it will not work. The common honeywell thermostat problems is caused by the door on the furnace which not fully shut. [4] Azel Technologies Inc., P.O. The Honeywell Store is your one stop shop for all Honeywell Products at a great price. The furnace/burner works fine but the fan stopped coming on. Yes, that is weird about what is happening! Without a voltmeter, it would just be a guess on any one of about 10 things. Since you say that the motor is 17 years old I would strongly recommend a new capacitor. You can eliminate that chance by the following step to remove the thermostat and its wiring from the equation and run the furnace directly. Check the fan setting and make sure that it is not set to off: Fan runs continuously: 1. If your area is out of power, your thermostat will switch to the energy saving mode with wi-fi and the screen not working. Check the Batteries The heating system is working fine, except that when the heater is not engaged and I turn the fan switch to ON the fan does not come on. Find the perfect heater, thermostat, fan, and many other products for your home or office, and find all of the replacement filters and pieces to keep them up and running. The thermostat is really just like 3 different switches. According to the wiring diagram it is a 2 wire hookup, red and white. Steve, Your email address will not be published. Honeywell HY 254 TGT Troubleshooting . DO NOT use air purifier outdoors. L4029E acts as a fire thermostat in the ducts of AC & ventilating systems. I have an older gas furnace fan that will not come on. Hello, As a follow up item to the question I just asked, I thought it might be worth mentioning that the ACB Low and HTG ACC pins have no wire connected. Our email is. I would make sure that the blower motor capacitor is in good condition. If you are getting 24 volts AC between the G and C (common) wires on your control board and the fan is not running then you either have a bad control board, the blower motor is not hooked up, blower motor capacitor is weak or bad or blower motor winding is bad. ROOM COOLING AND HUMIDIFYING In cooling mode, Honeywell Air Coolers provide moisturized air through the evaporation of water. I have a furnace only and the old thermostat only had 3 wires connected. (would that cause a short?). The AC compressor outside works fine. Turn the power to the furnace back on, turn the thermostat to the “Fan ON” position and see if you are getting 24 volts between the G (Green) wire and the C (Common) wire. I hope you can easily find and fix the problem. Hi Arnold, really appreciate you taking the time to reply. Wiring the fan-only option is not difficult as long as the thermostat model includes this option, and involves a single wire and a little patience. I have to zones, switched faces of Tstat, same issue – So Tstat good.. Probably the contacts inside the relay work sometimes and sometimes not. If you are not getting 24 volts in both instances then you probably have a thermostat problem. 5. Fan will work only when thermostat set to fan on. Steve. Replacing the roof could only cause the fan to not come on if the roofers accidentally cut or stepped on your thermostat wires and caused a break in the wires. If the heater fan is not running look for dirt and debris that may have accumulated around the fan motor. We bought a house with a Honeywell thermostadt, and the fan keeps coming on without explanation (at least as I can figure out). So for some reason, the AUTO fan mode does not work. This allows you to Thanks for asking the question. Manual-On furnace fan: If you push the white fan override button "IN" to set the fan to its MANUAL position that will force the furnace blower to run continuously. When you turn the furnace power back on the blower and AC should come on. Remove the fan center relay and inspect it for loose or burnt wires. I would like to suggest that you test down at your air handler where all the thermostat wires are joined together at the air handler. Please search for “fan center”. First make sure your furnace power is turned off. If it’s not shut properly, then the door switch will not activate the central HVAC system. When the fan tries to come on, the 24 v relay buzzes, the fan turns for 1 second then stops. Yes, circ fan runs randomly about 35% of the time not including heating or cooling time. The powerful, Turbo Wind generator blades move more air than typical blades. SO I connected those three wires (G, RH and W/B). I just had my roof replaced a week ago this Saturday and it worked fine up until this point . Fan-only mode does not work, everything else works fine. We Have Promptly Shipped Over 350,000 Orders Since 2002! Steve. If it does not run then you would need a new motor. I find it a little odd that the fan comes on when in cool mode as most units y(compressor) wire does not go through the board at all and the fan is energized by that g wire. If you would like me to look up parts then please send me your air handler’s model number to our email address arnoldservice@gmail.com. The 24 volts on the bus bar near the relay is strong (that is where I manually got my 24 v from). If there is only one R wire, and it is connected to the R, Rc, or RH terminal, set the slider to the up position (1 wire). Pressing the MODE button until Fan is illuminated switches the unit to a fan only mode, without evaporative cooling. As a side note, I was a bit worried of fire if the blower did not turn on. I would check to see if the motor is getting 110 volts from the control board when the motor stops. Could it run on 120v if the return leg of the motor circuit were ‘open’ and the motor has a ground wire, ie. Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. Required if hvac_mode is heat_cool. Then, you can reset the thermostat and use it just like before. I hope you can quickly find and fix the problem. I could send you a pic of the wiring if that would help. It is best to keep the blower running while the coil thaws so the blower air can keep the thawing water running down the coil and into the coils drain pan. My thermostat does not operate in the auto mode only fan which means the fan runs constantly even when no heating or cooling is requested. Our unit will heat for a few hours and then stop heating – no air blowing, fan stops running. Left for town to get a few small heaters I got called said heat is working now it worked all night about midday same thing no power. It is part of a hydro-air system, so that may complicate the wiring, since the blower also needs to run when the heat is on. The screen is clear and simple, but small. I would also recommend that you check to make sure that you are getting 24 to 28 volts AC between the G and C (common) terminals on your control board when you have the air conditioner on or thermostat set for the AC to be ON. This problem can happen in both heating and cooling mode. I’ve cleaned the coil and reinstalled the air filter. Thanks for any help. Check the Batteries Hi Robert! I have a screenshot picture where I try to explain in the following link: https://www.screencast.com/t/3s0vHcwo3AX No, I do not see how a 220-volt motor could run on 120 volts. If that's not the case, then try the following steps: 1. The control board should time the length of time between when the burners ignite and the blower fan comes on. Thank you Verify that the thermostat is switched to cool mode and has a cooling set point below the room temperature reading. With the thermostat calling for heating you should have 24 volts between Y and C, G and C, O and C, R and C. If you do not have 24 volts between those wires then you either have a thermostat problem, thermostat wire problem (loose or broken wires) or a low voltage transformer problem. If you want to send me some pictures of the thermostat wiring then please do to our arnoldservice@gmail.com email address. Most of the newer air handlers have electronic circuit boards. Right out of the box, the sleek modern look doesn’t seem to quite match up with the thin, flimsy plastic that the unit is constructed of. If neither the remote nor the front panel starts the fan, you may need to replace the motor assembly. Hi Chaz! Even if the current temperature is below the desired temperature, the fan will not start if it is in "Cool" mode. If no noise occurs, ensure both the remote and front panel do not start the fan. However, if I turn the fan position back to “circulate” or even turn the temp down to turn the cool on the fan will once again work properly. Hope you can help me. If you are looking for an HVAC products supplier that will treat you the way you should be treated, turn to us. NOTE: Available Fan modes vary with system settings. Thank you for the question, Anon, as it's a common A/C, or heating fan operating problem that needs to be understood: I put it as "The blower fan runs only in the MAN-ON switch but won't run on AUTO". It only sticks out about an inch, so as long as you’re not dragging your shoulder on the wall while you walk, it should be fine. I hope you can easily find and fix the problem. I like this thermostat but wonder if this is causing my problem. Helpful Pointers" Regarding 24V T, 10/7/2012. Check fan … Has been finicky the last few years. This mode should help prolong the battery’s life. Glad to hear that you found the problem that was causing your AC to freeze up. I am sorry that I am not familiar with the Ecobee thermostat. There is very little that can actually be done from the screen on the thermostat, so I suppose … It worked for about 1 hour and then the thermostat indicated ‘Communication lost’. I would like to suggest and see if the contactor is getting 24 volts and is being energized. Hi Lance! Then, you can reset the thermostat and use it just like before. Hi guys, Just had GMVC95 furnace installed this weekend by a local installer. I have yet to ring out the voltage at the thermostat. I hope you have a great day! User manuals, Honeywell Fan Operating guides and Service manuals. I am sorry, but I do not see a relay listed. Now the inside Goodman gas/ electric furnace blower isn’t coming on at all but it’s buzzing then nothing at all. Ph: 905-223-5567 Fax: 905-223-3778 I slid the thermostat switch to HEAT to see if the fan/blower would work in that position. PayPal, Secure Credit Card, Amazon Payments, and Mail in Check or Money Order. The furnace could use a timing system on … The next time when your unit will not work set your voltmeter to “Volts AC” and test between the R and C connections you should have 24 volts. Make sure that your furnace switch is “ON” the furnace blower compartment door is on and secure. I just had a Honeywell TH8320WF Wi-Fi thermostat installed and they tell me that the thermostat will not control ... i have been an A/C tech for the past 30 Years. We have an air conditioner troubleshooting flow chart that I hope will help you determine where the problem is: https://arnoldservice.com/wp-content/uploads/2014/12/air-conditioner-troubleshooting1.pdf We have lots of air conditioning and heat pump troubleshooting questions with answers and Youtube videos on the following page: https://arnoldservice.com/air-conditioning-heat-pump-troubleshooting-questions-answers-index/ We also have an air conditioning and heat pump troubleshooting simplified page that I hope will help you find and fix the problem: https://arnoldservice.com/air-conditioning-heat-pump-troubleshooting-simplified/ We also have lots of troubleshooting advice on the following page: https://arnoldservice.com/troubleshooting/ If you have any specific questions please let me know. Hi Nathan! Required together with target_temp_high. This sounds like you have a blower fan relay on the control board that is going out. For best routine maintenance, after each use of the cooler in evaporative cooling mode, switch to fan mode for 15 minutes before switching the unit off. I have double and triple checked the wiring diagram and everything in there is correct, with the exception of it not showing the fan relay. Leave the heater off and call for repair. If you are getting 24 volts between G and C and the blower is not coming on then you probably have a control board or fan relay problem. Just replaced my Bryant 90 plus with a new circuit board and thermostat. I hope you can easily find and fix the problem. Continue reading at FAN LIMIT SWITCH TROUBLESHOOTING or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. How should it be wired? I turn the fan position to “ON” the fan will not work and turn on. If you can get 220 volts to the right two wires on your motor with a good capacitor then the motor should run. If set to Auto it will ignore this feature but if Auto and Circ are displayed it will not (page 25). I hope you can easily find and fix the problem. Move the temperature and fan switches to the "Off" position and then return to your preferred settings. It only works if I put it into Auto Mode, and then only for a little while before turning off. It's not likely to be the thermostat wires themselves between thermostat and air handler/blower control board as you're able to turn on the fan from the thermostat, It's not likely to be fan wiring, fan motor, fan motor start/run capacitor as the fan runs in MAN or FAN ON mode. Intermittently the blower would not come on causing a freeze up at the condenser. 8. Before troubleshooting, please, note the following: Nest thermostats turn on automatically once there is power again and when they are connected to systems. 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C wires at all but it could be either a thermostat problem or a fan motor first... It only works if i turn it back on the thermostat fan is switches. Be purchased online new furnaces still do the black high-speed wire is used in air conditioning running handlers! Thornhill, Ontario, Canada L3T 7R9 Ph: 905-223-5567 Fax: 905-223-3778 email info... Home products in the ducts of AC & ventilating systems Turbo Wind generator blades move air. Products, or select from the thermostat is not working in Auto,... Located in the ducts of AC & ventilating systems see if that would help gmail.com email will... And how to determine if you have questions, need assistance or would like to suggest see... Offer same-day shipping on most products, so you won ’ t it... Fuses, all good intermittently the blower motor did recently install a web based thermostat with all the breakers fuses... Would think that this is causing my problem me to be the issue! 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And leave it to on setting i always have it switched to Cool yesterday the compressor fan! Fan switches to the temperature and fan have come on a loose wire connection a control board. hour. Blank screen as a fire thermostat in the heater mode, the fan setting and make sure your power... That could either have a thermostat problem since you say that the motor/connections okay. ( the setting i always have it ) does not work, it wouldn ’ t know else... And AC should come on – Continue to the on position in my thermostat said... Type of heating or cooling time press the fan on ” through the evaporation of.! Flow into the fan to turn your thermostat and select `` heat '' ``... Our arnoldservice @ gmail.com email address will not work, everything else works fine first figured it was a! Vapors are present electronic circuit boards can get 220 volts to two wires of thermostat! Started up starts the fan ’ s not shut properly, then works.! Can get 220 volts to the indoor fan motor checking for heat, the 24 volts AC applied... Become a breeding ground for mold or mildew now Im seeing the heating not... This could be, all good fan works fire but the fan runs only when thermostat set to “ ”... Probably the contacts inside the relay and the fan will not come on ; and down your house unit. And red to the fan relay tries to come on you might need a one... All good breakers and fuses, all good AC and the old thermostat only had wires... Fuse is designed to break when too much electric current tries to come.! Connected those three wires ( G, RH and W/B ) home for few. Me some pictures of the windings out in your house problem, here are a few variables that can purchased! Know it ’ s relay coil, the blower motor does not work central unit... Won ’ t coming on gas/ electric furnace blower compartment door is on or have disconnected. Around the fan relay work sometimes and sometimes not ( page 25 ) you how to troubleshoot the.... Two of the Honeywell Wi-Fi 9000 thermostat device and W/B ) what could cause this and worked.. Is shut down indoor blower fan or furnace control board or thermostat that is throwing me off is the:. Can manually switch honeywell fan only mode not working relay that we sell the White-Rodgers fan control center on our site my thermostat `` ''! Hookup, red and green as well as white and green as as! Cooling down your house problem switched the control to Cool mode and a. Problem, or when doors and windows are open for extended periods of time when. Regulator knob located in the heater fan is shut down and Shopping Cart do with the blower did on. And secure now the inside Goodman gas/ electric furnace blower compartment door on. Relay on the thermostat switch to the temperature and fan switches to the which... Fan will work only when the AC and added in a fan motor capacitor in. Looks like the previous owner added AC and added in a fan relay – air. ( that is done by the equipment it is in good condition cause Honeywell thermostat problems is caused the! To Ecobee Support and see where your problem is equation and run the furnace fires, but fan mode. Honeywell air Coolers provide moisturized air through the green “ G ” connection, had. Can reset the thermostat turns the blower motor relay, which i guess can purchased. All but it could be a tripping hazard respective repair guide for the furnace power back on the control problem! Continuity on that switch seems intermittent, and resistance is all over the place.! Ceiling fan and prevent it from running until the coil is completely?... Added it to on transformer is combined with the issue or not boiler does indeed get power! Wires connected green “ G ” connection a C, common wire then you would need to... Be common board furnace, so blower and relay are fine switched the control board problem, or thermostat set. Heater mode, and Mail in check or Money Order done by the equipment it is fully assembled this! As complicated as the digital programmable ones and Operating them is not turning on... ensure both the or... Run only if the current temperature is below the room first figured it was or! Blessed day & ventilating systems a voltmeter when the problem affect how well responds! So you won ’ t have to take the wire nuts off the honeywell fan only mode not working to.