I became the lead at my property this year. In the past we've always had at least 1 other experienced maintenance person to help brainstorm different issues or just offer a simple answer when I'm over-complicating an issue. I don't have that anymore. Your videos have been that extra voice for me and I appreciate it. Even basic stuff like this can help. Sometimes I just know by behavior and past experience to replace a certain part but it's nice to get more in-depth tutorials about why. I'm getting more sharp and accurate with diagnosis with your vids and some of the comments from viewers 👌
Hey man been watching your vids...new to apt maintenance and I got hired despite not being hvac certified. Rewarded my boss by getting certified but still need to learn a lot. I appreciate all your vids being new to the industry and hvac so Thank you.
If you're a homeowner and want to, and the coil still works, you can take these contactors apart and sand a shiny new flat surface on the contacts with about a 600 grit sandpaper on a flat table. works great. just like new. reduce, reuse, recycle, and save money too.
I was wondering why some units have a single pole and double pole. I have a crankcase heater for my unit but it comes with a double pole from factory though.
It seems I always remember the crankcase heater being fed in the contactor line side. I always thought manufacturers used the single pole contactor to cut manufacturing costs.
I have a outside condensing unit where the fan is not running. When i push the plunger to the contactor in, everything seems to run normally. Ive replaced the capacitor. Aside from a bad contactor, are there other possible reasons for this, for example, low freon?
Question from a homeowner. My carrier infinity AC keeps giving me an error “74 - No 230V to compressor”. It happens irregularly. Some days it will work all day, others it will give me this error and not cool. After researching it seems it may be the contactor. Would a contactor fault irregularly like that?
I would have to see the contactor and your scenario. there are 120v contactors out there so just saying this isn''t a easy question to answer without more information
Replaced the contactor 2 times, condenser fan turns on after replacing it and works for a day and half just fine! Then, only the blower comes on but not the condenser fan. Any ideas what could be the problem? Thanks!
Nice video. Only you did not torque the lugs to the proper in/lb settings. That information is on the contactor. (25 in/lb for screws, 40 in/lb for lugs, most often).
Yes this is true, one might need a dedicated torque screwdriver to be preset to know when proper torque is reached from the clicks. That's what I would recommend using for your first 1-5 years of replacing contactors and such. But once you have been doing this for over 20 years and have replaced and installed about 1,000 contactors you get a good 'feel' for what 25 inch/lbs is on a contactor. Not diy advice 👍
@ApartmentMaintenancePro You are partly right. I have been teaching students that they need to torque contactors. It's the students that are in the trade that don't realize correct torque. So veteran tradesmen are the ones that need the torque wrench the most. In my experience. Thank you for the reply.
You are wrong in this video. And should not be given information to someone they will get shocked when you went L1 to T1 you showed zero go from ground to T1 and you will have 120v this is a 2pole single throw breaker if you have 240v on L1 L2 then the side that does not have the throw it carries the power across the metal bar.
