Five Most Common Problems With Air Conditioners HVAC Heaters Indoor AC Fans

Kung Fu Maintenance discusses the five most common problems with Air Conditioners, HVAC, Heaters, plus Indoor AC House Fans.

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0:16 All right today I wanted to go over the five most common problems with
0:19 air conditioners say you go to turn you’re air conditioner or heater on
0:24 on cool or heat and auto and you lower your temperature down
0:28 and let’s say nothing happens. The unit doesn’t turn on the blower doesn’t turn on at all 0:32 first thing you want to check is the breakers.
0:36 It could be a tripped breaker. You often have a breaker for the condenser
0:40 and then a breaker for the fan itself this one is right here
0:44 for the fan. So make sure your breakers are not tripped. Sometimes if they’re
0:48 tripped 0:49 they will trip halfway and when you reset it you need to turn the breaker all the way off 0:52 and then turn the breaker all the way back on.
0:56 Next thing to check is 1:00 the door switch
1:02 often there is a service door switch on the air conditioner heater unit
1:05 it’s usually located right here what you want to do is 1:08 push on this left side
1:10 to see if that will engage that switch. So if you got it on heat or cool and auto
1:14 already. A lot of times that will be the problem
1:19 Sometimes you might need to add a screw. Like this one a
1:22 screws been added to make sure that it is held in place.
1:26 Or you can tape the door shut. 1:27 If you do add a screw you want to make sure that that screw isn’t going to be penetrating into anything. 1:31 Like any tubing or anything like that 1:34 such as any refrigerant tubing behind it you want to make sure you pick a place 1:38 that is good and you don’t want a screw that is too long you don’t want it to poke into anything that 1:42 it’s not supposed to. Ok the
1:45 number three most common 1:47 problem with air conditioners. So one we had
1:50 a breaker tripped, 1:51 two, the service door switch
1:54 The third most often cause of an air conditioner not working
1:58 Is inside here if this hatch comes open 2:00 sometimes
2:02 let’s say it wasn’t secured properly it’s got this like a mailbox 2:06 latch
2:07 that latches the door into place an 2:10 if that came open and this hatch falls open
2:13 a lot of times what happens is your evaporator coil will freeze up into a block of ice
2:18 so while you are there you got your filter
2:21 and your filter make sure you have good air flow
2:24 that a lot of times what will happen is that will 2:27 turn to a block of ice and
2:30 you won’t even be able to pull the air filter off of it
2:32 what you want to do is come over here to your thermostat and just turn
2:35 the cool side off and just turn just the house fan on 2:43 so turn the fan on on
2:45 and put the switch here on off that way you can defrost
2:49 the air conditioner and you also kind of want to watch it to make sure your
2:52 condensation line doesn’t overflow
2:56 get built up with too much water from the ice melting so something
2:59 to keep an eye on there but keeping the fan on will help melt the ice faster
3:04 and dry everything out you know get back to normal 3:07 it
3:09 takes a little while and than 3:10 you’ll be able to put it to cool and auto again and you’ll close this door and again if you need to
3:14 you will add a screw or you can add some tape to make sure that its held in place
3:20 and doesn’t come open on you again.
3:22 Number four most common problem with HVAC heaters and air conditioners is a fan 3:26 motor that won’t start. Often you can just replace
3:30 the fan start capacitor. I have a video showing you how to do that, “First Thing To Try” 3:34 “Before” you just run out and 3:36 replace the “Motor” is to try “Replacing”
3:38 the fan start capacitor