Thermistor repair of the ECM motor

[@USA-GreedyMenOfNoIntegrity]

Good job.

[@ADVANHVAC]

Thanks!

[@sapperdeflap]

5:45 You need to hold your solderingiron longer on those leads till the solder flows around it, your periods are too shorts which will lead to cold brittle joints to break in the future.

[@ADVANHVAC]

Thank you.

[@bobsoft]

@@ADVANHVAC flux and leaded solder is helpful to avoid cold solder joints

[@bobsoft]

You may want to make people aware of the two large capacitors. Those can give you a nasty zap if you don't discharge them with a resistor. They may have a bleeder resistor in the circuit, not sure. Better safe than sorry

[@ADVANHVAC]

That is a great point. Thank you.

[@USA-GreedyMenOfNoIntegrity]

@@bobsoft you can measure across capacitor leads. Anything in the single digits is fine.

[@CubbyTech]

I hope the component isn't polarized - you should always try to replace in the same orientation as the old one. Funny how you called it 4 different names :D

[@USA-GreedyMenOfNoIntegrity]

DigiKey has the Inrush Current Limiter 1 Ohms ±20% 20 A 0.866" (22.00mm). NTC Thermistor. $1.94 + Shpg. The SL32 looked like 2 Ohms.

[@ADVANHVAC]

Good to know.

[@registered99]

How do you measure the part to make sure it's in spec? I just bought a Sl22 1r020, and in the "ohm" mode it's coming back 2.2 ohms resistance between the leads out of circuit. That seems weird, when the datasheet says 1.0 ohms @ 25 degrees centigrade.

[@ADVANHVAC]

I didn't measure the part. I just installed it and hooked it back up and it's working like a champ.

[@registered99]

@@ADVANHVAC I ended up figuring it out. It should measure around 1 ohm. I wasn't subtracting out the resistance from my multimeter leads.

[@gtpforever]

Good job but never do this. Lol

[@ADVANHVAC]

If you’re in a pinch, do this lol.

[@gtpforever]

@@ADVANHVAC being in a pinch doesn't cover you liability wise if some catastrophic happens. You better make them sign a liability waiver before doing this.

[@weaverp1]

Manufacturer "fixed" this issue by potting the entire unit.😈😈

[@ADVANHVAC]

Yup, I have had to replace the whole entire motor.

[@weaverp1]

@@ADVANHVAC On older units where everything else was ok, I have replaced the ECM system with an old school blower motor control board and an appropriate size and speed/s split capacitor motor. You'll lose a little efficiency but save a butt ton of money. Some folks can't afford a new system at the drop of a hat.

[@ADVANHVAC]

@weaverp1 yes for sure you have to do what you have to do.

[@bad03xtreme]

@@weaverp1 my ECM went bad on mine, can you share what you used for your fix?

[@ADVANHVAC]

@bad03xtreme its in the description on the video. 😬