When should you replace a contactor?
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- Опубликовано: 11 апр 2023
- Here is a video explaining some of our a/c maintenance procedures as well as what signs to look for when a contactor should be replaced on an a/c system.
#riseandgrind #hvac #philly #drewscrewhvac 
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Great video bro
As a homeowner my York heat pump is around 20 years old. The only thing that failed was ONE of the 30A time delay fuses. I have plenty of ATC 4 fuses, contactor, time delay fuses and a Turbo 200 Am-rad capacitor JUST IN CASE!!
Thank you! I just ordered a new contactor for that exact reason, it also burned the wire going to the condenser, before I replace it I will check for voltage drop, Nice tip!
first off, great vid. what if I had a blown run fan motor cap, replaced that, and now the fan and condenser will only kick on if I manually press the plunger...ohms across the coil was 9 if im not mistaken...plunger moves easily when pressed, no perceivable obstruction but the plunger itself is not activating. thanks for any help.
I’ve watch at least a dozen videos on contractors and you’re the first to mention voltage drop!
I’m in the field for a couple years my guy,I was wondering if you could share how your business got started and how long it took you to branch out on your own.just wanted a little motivation,cool videos!
No doubt man! & I went to trade school at 19 fresh out of high school in 2011 & started working for a few mom & shops in 2012-2016 but not to go off on a tangent I always loved learning new things reguardless of how great/bad the situation is at the time.
That was my satisfaction. Just knowing that if I learned new something today, then that 1 thing can hopefully one day come in handy. & hvac gave me that opportunity to turn that initiative into a career. No matter where I worked I always took the initiative to learn something new everyday (whether either on the job, in a book or at the supplyhouse) yup dammit I'm a #hvacjunky at heart 🫡🫡😂
it's funny. A business wasn't really my idea from the start. I just love the challenge of learning things & that kept growing. But the more I stayed in it the more people I did jobs for over the weekend kept asking "hey why not start your own company " ext.
I already had a handful of clients but I made the jump on 2016 & really started to get after it knowing now I didn't have a guaranteed paycheck. It was time to grind.
Business is definitely a different monster from hvac.
But I took that initiative from the love of learning hvac into business & I never looked back👊🏾
Very good Video:
I have a few questions for you:
1. Other than visually and voltage difference: What other tests can assist in the judgment of changing a contactor?
2. Is checking ohms on coil contactor a good test to replace contactor (below 10 and above 20 ohms).
3. In an extreme hot weather region, is it advisable to replace contactor every 7 years regardless of measurements (or is not cost effective)?
I understand that most answers are " it all depends" I am looking for a conservative strategy to be proactive not reactive to AC being down on the hottest day/night.
Thanks: your feedback is highly appreciated.
Ok let's break it down... I got you‼️‼️‼️‼️
Question #1. That's a loaded question. It really depends on WHY you are out at the home.
Reason being-
on a maintenance there is alot MORE reasons to replace that contactor vs a no-a/c call.
Replacing that contactor during a MAINTENANCE saves that customer time (from taking off work) & price (from inflation) vs. Doing it later (& risking a more serious issues like a compressor failing & a more expensive repair)
Question 2.
Ohms.... ehhhh to each its own. I think potential difference & visually checking for burn wires/burnt terminals may be your best bet. Checking ohms is mainly for compressor failures/ testing t-stat wires for a direct short) to be honest in my opinion.
Question 3. Hell to the yes.
The contactor is NO DIFFERENT THAN a capacitor. Neither are supposed to last the ENTIRE LIFE-SPAN OF THE A/C SYSTEM.
The contactor
The capacitor
(Relays) on circuit boards
Thermostats
Are all considered "maintenance items" meaning we won't tell a customer they will last forever.
Maintenance is the only guarantee to stay on top of future breakdowns... But all of those mentioned parts above have a shelf life of 6-8yrs BEFORE showing wear & tear.
Hope this helps ‼️👊🏾
@@Drewdriskle
Thank you so much for taking the time to answer my questions. Amazing knowledge and experience you have in the HVAC field and humble enough to share it with your viewers. I am creating a table to stay on top of the following items: Condenser coil cleaning (1 year), Evaporator Cleaning (3 years)(depending on cleaning habits), capacitor change (7 years) and contactor changing (7 years). Of course, a yearly preventive inspection to view physical conditions of parts and wiring.
Mr. Drewdriskle, does the blower capacitor needs to be changed every 7 years? Do you feel something else needs to be included during preventive maintenance or time change frequency? Fan motor??
Excellent job you are doing out there!
After changing contactor, ac doesn't click on at right temp,i have to lower temp under 70 for it to start,is there any relation
If you have to lower the temperature of your thermostat to UNDER 70° then that means that the room temperature is already 70° degrees.
Maybe the room where the thermostat is in is naturally cooler than the rest of the house?
Or maybe something around the thermostat is causing it to read a cooler temperature than normal?
Also another thing you could do is buy a room thermometer & check the temperature of the wall that the thermostat is on (to make sure that your current tstat is reading accurately)
If the wall thermometer is reading within 2 degrees of your thermostat than the thermostat is OKAY. But if your wall thermostat has a 3 degree difference or higher than I would recommend replacing the thermostat.
There could be a number of things but I hoped this helps!!
@Drewdriskle thanks for responding. Maybe it needed to re calibrate because i left it on, and the next day, it started clicking on at 75 degrees, which is my desired temp,so im all good now 👍
Im an AC tech as well, I came a accorss a contactor that had 24 volts on both sides but does not pull in. SHould I relplace it? or could it be antyhing else
You can try popping in a new contactor but just hook up the 24v wires to see if the new one pulls in (if the new one pulls in GREAT if not then its back to square one)
It could be a few other things as well. Either your LP or HP switch outside is open (verify this by removing the wires from either or one at a time to see if the coil pulls in) or it could be a bad common.
A bad common means power is getting to the contactor but nothing is coming back (to the indoor unit) to complete the circuit. I would try checking for broken low voltage wires from your contactor back inside
&
Also if the wires are intact & not broken maybe try ohming them out.
It definitely sounds like something is causing that contactor not to energize.
Hope this helps. Good luck!
@@Drewdriskle your awesome bro thanks. I found the issue, someone landed it to the r terfminal and not the c