Top 10 Reasons Why the Blower Fan Motor will not come on. I would like to suggest that you make sure all your thermostat wires are good and tight. When the HVAC is in the heat mode, it can cause a cool draft when the heat is not in the demand mode. HVAC. I hope you can easily find and fix the problem. Some control the blower fan with a relay. My blower will not come on neither heat or cooling mode. If you find that your unit has ice build up, especially if you find that the air flow is very slow or low, even when set to run on high, then it is most likely an issue with the blower motor and or fan assembly. Air Handler Blower Motor - Alignment is Critical. residual blower? Steve. Having the exact part number can save you both time and money, especially if you intend to get a professional installer to replace the blower motor for you. HVAC AC motors are used in equipment such as fans, blowers, pumps, air conditioners, heaters, and compressors. Without it, the AC system will not be able to circulate any heated or cooled air. An HVAC blower motor replacement costs an average of $450 but anywhere from $150 to $2,000 to replace. Therefore, it’s essential to keep it in good condition if you want your air conditioner to work. Most of the time on Amana furnaces the blower coming on in the heating mode is timed by the control board unless you have a really old furnace that a mechanical fan center relay like the ones we sell on the following page: https://arnoldservice.com/product-category/fan-blower-controls/honeywell-fan-and-limit-controls/ You might need a new control board or if you have an old furnace a new fan limit control. Dirty air filter. I hope this helps. I would think that you need a new control board on your air handler. If this is your issue, then the solution, in most cases, is not too difficult in most cases and simply requires you to open up the air conditioner unit, remove the fan from the blower motor assembly and thoroughly clean it, in warm soapy water if possible. How to Troubleshoot a Blower Fan Not Working by Troy Lambert . It’s the trigger that circulates conditioned air throughout the home. It's not likely to have a positive, a negative or a ground; rather it likely has common, high-speed, and low-speed conductors with a frame ground. A kinked refrigerant line, or a blower fan that isn’t running right can cause this, too. The blower motor starts, turning fan blades that circulate cold air from the evaporator coils, through the home’s ductwork and into each room. We carry a huge range of brand name items that can be purchased online. The installer wont come check it out as I have told him he’s not changing my only 2 yr old thermostat out…… I don’t see how my thermostat controls the 45 sec. I have never heard of a thermostat that controls the off time on the blower. Most AC systems are designed to work within a large range of temperature variants and environments, however due to numerous causes, the air conditioner is still prone to overheating. Sometimes the belts wear out, crack, and eventually break. A control board relay where the relay contacts are welded shut can cause the blower to run continuously too. Air Conditioning and Heat Pump Troubleshooting Simplified, Air Conditioning & Heat Pump troubleshooting questions with answers index, Furnace troubleshooting questions with answers index, Gas & Electric Furnace Troubleshooting Simplified, https://arnoldservice.com/product-category/fan-blower-controls/honeywell-fan-and-limit-controls/, https://arnoldservice.com/problem-fan-will-not-come-position-fan-will-not-come-turn-thermostat/, American Standard Trane Condenser Fan Motors, ICP Heil Tempstar Whirlpool Flame Sensors, Trane American Standard Furnace Draft Inducers, Trane American Standard Pressure Switches, Managed by Wooassist - Woocommerce Support. You might need a new fan center relay (if your furnace is equipped), fan sequencer or furnace control board. In most cases the air handler or furnace control board controls the blower on and off time. BillyHvac. For the first summer since I've owned the home, condensation started to not drain properly and is leaking onto the filter and onto the basement floor. This would indicate that the thermostat and the blower motor are operating, but the refrigeration system (outdoor compressor) is not working right or air isn’t circulating properly, usually because of dirty filters. Well mine don’t. Another common problem with the air conditioner blower motor not starting up, is caused by overheating. It could be a bad relay, control board, run capacitor, or the blower motor itself. Our email address is: firstname.lastname@example.org We have two really good YouTube Videos below that show how to troubleshoot your furnace or air handler if the furnace blower motor will not turn on. Our email address is: email@example.com. Electrical testing equipment in good working conditions to the transformer from unit # 1 is component! 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