However you want to word it, if your indoor fan isn't working it could be several things. We will go over a few things to check before calling for service. First make sure there is power to the indoor unit and that a switch or breaker isn't off. Some indoor units (Heat Pumps) have breakers right on the Air Handler itself. But also check the main breaker panel. Some units have a shutoff switch on the side of the unit or an Emergency Switch located on a wall. Then make sure your air filter isn't blocked. Sometimes that is the only problem. Some customers don't even know they have an air filter and it has never been checked. Try setting the thermostat fan switch to the "on" position. Feel for air coming out of the vents. If it is in the air conditioning mode, check for ice around the evaporator coil and on the refrigerant lines at the indoor unit. If the coil froze, the fan could be working but the air wont go through the ice until it melts. If the fan isn't working, that can cause the coil to freeze.

If the coil is frozen, shut off the air conditioning immediately. Then check-out our page - heat pump iced-up in summer. (Even if it's not a heat pump.) Some equipment still use belt driven motors. Mostly "low-boy" oil furnaces, especially older models. Sometimes the belts wear out, crack, and eventually break. If you take a look at the blower section of your heating system it is quite easy to see if you have a belt driven blower motor. You will see a motor sitting on top or next to a larger blower wheel connected by a fan belt. Most fans are energized by a fan relay. This is probably the most common cause. The contacts inside the relay go bad. They usually stick open, never sending the signal to the motor. This is much easier and less expensive to repair than a motor going bad. A weak, faulty, or shorted capacitor can prevent the motor from running. And of course, the motor itself can always go bad. Sometimes the bearings seize. Or the motor just burns up or weakens.The bottom four causes in blue are commonly found problems and can be addressed, even fixed by the homeowner.

Faulty relay or fan control Frozen coil due to an air conditioning problem Bad or weak motor capacitor Breaker or switch offIt’s a common question we hear from California homeowners in summer, “Why isn’t my air conditioner cooling my home!?”We’ll help you troubleshoot this annoying problem. To do that, we need to ask you a few questions to help pinpoint the cause of the problem.So our first question is…A dirty air filter blocks airflow to the air handler.  However, this is caused by a refrigerant leak, which you’ll need a professional’s help to find and fix.If no air is coming through your supply vents and the AC unit isn’t working at all, follow these steps:1) Check your thermostat temperature— Make sure you’ve set the temperature setting at least 5 degrees below your room temperature.2) Make sure the thermostat is set to “Cool”— Seems simple, but you never know if one of your family members (or the dog) accidentally set it to  “Off” or “Heat” by accident.3) Check the air filter— If an air filter

gets too dirty, it will completely block airflow and freeze the inside unit. Change the air filter if it’s dirty. hvac unit 10Here’s our guide on selecting the right home air filter.4) Check that electricity is going to your air conditioner—This means checking service switches that are:If any switches are set to “off”, then there may be a problem with your air conditioner.sharp window air conditioner replacement partsFor example, an AC with a water sensor switch will shut down if it has a clogged condensate drain line and water spills into an overflow pan. 5 ton ac unit definitionLong story short, this means the your AC shut down to prevent water damage to your home.Also, your AC may also be overheating, causing the air conditioner to pull in more electricity than the circuit breaker can handle.

So the circuit breaker cuts power to your AC. If the circuit breaker keeps cutting power after your AC runs for awhile, don’t ignore it. It’s trying to tell you something is wrong.Call a professional to figure out why this is happening.If you need help finding any of the switches we mentioned, ask our experts for help.Get quick AC repairs in California If your AC still isn’t cooling your home and you live in the the East Bay, San Jose, or Sacramento areas, contact Service Champions North for an AC repair.Air Conditioning • HVAC A central air-conditioner is an elaborate system that involves parts such as an evaporator, a compressor, a condenser, fans, and refrigerant to run through the unit. Like many household appliances, each of these components does their job both independently, but also in unison with the connecting parts and when one section of the system goes down, the entire performance falters. While each component in a central air-conditioner is critical, quite simply the unit will not work if the fan is not running.

Fans in the central A/C both pull air out of the room to be conditioned and have humidity removed and also push chilled air through the vents throughout the house. When the fan goes down there is no way to cycle the air and thus the system is essentially stalled. It’s important to get the fan up and running ASAP or else the home will get uncomfortable in a hurry and you could end up damaging the compressor. There are a few ways to tell if your A/C fan is temporarily or permanently out of order. The first is an inspection of the outdoor unit to physically see if the fan is turning. The condenser lines should be cold and the air inside the home should be cool. If the fan isn’t running at all or there is warm air blowing it’s time to troubleshoot: If the fan doesn’t start up at all it could be something as simple as a setting on the thermostat. Make sure that the power is turned on and that the settings are calling for ‘cooling’. If all the settings are correct but the fan doesn’t start it could be an overheated or damaged fan motor.

In some cases, you can give the fan a ‘kick start’ by pushing it with a stick and if this occurs there is likely an issue with the capacitor. Similarly, if a fan won’t turn when the power is on but will rotate freely when shut off it could be the sign of a bad motor bearing. Trouble with the bearing will also result in wobbly or lopsided turning if the fan does run. The fan needs to run at an optimal speed for the system to function properly. If the blade turns noticeably slower there may be low voltage running to the unit caused by issues with the control board or problems with the circuits. Also, the fan blade may have come loose from the motor shaft and is simply moving slowly because of a breeze or the turning of the shaft. Once again a capacitor may also be causing issues with the slow moving fan. If your Central A/C fan is acting unpredictably, starting on and off at random and shutting down in the middle of a cycle it could be a sign there’s an issue with the wiring or some loose components somewhere.

It’s normal for a fan to keep running for a short time after an A/C cycle while the compressor motor stops but a fan that keeps winding excessively there are likely problems in the circuit board or with the wiring. As long as the A/C unit is running properly some homeowners may be willing to ignore a ticking, rattling, or buzzing coming from the fan area. In reality, it’s best to diagnose these sounds to make sure they aren’t leading to serious problems down the line. The first thing to check is that an obstruction isn’t hitting the fan blades as they turn or that the blades aren’t bent. Buzzing and humming are somewhat more sinister as they could present a problem with the motor or the bearings turning the blades. The common denominator with all these problems is that, although a visual inspection might locate the problem, the fix should almost always be done by a professional HVAC technician. It’s better to spend money for a service call and be guaranteed you fix the problem rather than buy unnecessary parts or do incomplete fixes that could end up costing more in the long run.