Infinity Blower Diagnostic w/ Bert
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- čas přidán 27. 08. 2024
- Bert shows his Carrier Infinity blower diagnostic process using a multimeter.
In a Carrier Infinity system, the blower is in constant communication with the board. However, when the blower motor doesn't communicate back, an error code shows up. In this case, we have an error code 44, which may point to a failed module or board.
Instead of replacing the module and using the process of elimination to diagnose the problem, you can use your meter to see how much voltage the board is actually sending to the module. In this case, Bert reads ~240v going into the blower motor. Then, Bert checks the control voltage and sees if there is between 12 and 13 DC volts of power between the red wire and common at the blower plug; the readings are right on target. The reading between the common and yellow wire should be around 5 DC volts; Bert reads ~1.6 volts, so the board isn't sending the proper communication voltage.
In the end, Bert would have replaced the wrong part if he had immediately replaced the module without testing it with a meter.
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Good job straight to the point m
On point no long talks. Thank you.
Good info saves a trip to the truck for the ecm motor test kit
No bs no jokes straight to the poiint thanks again
Thanks! You can use a motor tester as well, plug and play. If the blower turns on its the board if it doesn't its the motor.
This is a secondary check for me after checking voltage.
But motor testers use 24v a/c. Does it still work when the motor wants to see dc
@2ShotsDown it's a built-in rectifier inside. Converts 24v ac to 12v dc
Which motor tester do you use? I’m not sure if mines has that, I got the gentec tecmate and the supco.
I have those 2 as well.
I wish I would have seen this video before my service call. The motor started with my Tec mate. I wasn’t sure what voltage readings should be & called tech support. He said they don’t get that information & to replace the board.
Had same problem after replacing the board. Came back with the module & problem solved. Glad I found this video for next time
Bro, thanks for clearing up the minus on ur meter. I had seen it on mine and had forgotten what it meant. When I saw urs and u ended up explaining it. very nice.
Thank you Bret.
Excellent video. Thanks
You da man, Bert!
Love a Bert video. Nice explanation.
Good video thanks
Bert is the best!
Awesome video
Very good diagnostic tech tip.
great video..thanks!
Thanks good stuff
Good info
Good stuff Bert
Excellent thank you
That was cool. Thanksbert!
Good job sir .i I'm from India 😘🇮🇳
There's a motor led that would be flashing if its sending the signal for the motor to run. It actually is off here in your video verifying your findings.
So the red wire has 12vdc constant? While the yellow wire is only going to send 5vdc from board to module when there is a call for cool?
Not constantly I don't believe. I normally just turn furnace off. Unplugg the thermostat plug and jumper r to g.
Can you do a similar video for infinity gas valve and inducer.
ive had those motorwinding side fail on lennox, lots
of moisture signs though and stiff turning
Just did this test on a Furnace
Had 12v to r-g, then 5 v to yellow, blue was all over the place.
Assumed module was bad- replaced motor/module.
Same issue.
Bad board.
Did I miss somethin
How many volts should the blower motor be sending back on the blue wire?
Just went through this today with a Bryant , I had code 41 though.
How is high voltage checked??? What leads colors should we check
Does this same principle apply to the Carrier Infinity furnace with 120V?
just had same issue 2009 Infinity AH
Supco makes a ecm motor tester too.
Can you use , an ECM motor tester on infinity blower motors?
Esos motores trabajan con 220 v y 24 v ac nunca e visto que trabajan en DC????
Nice video but your meter battery is about to die
Don't they make test tools to plug into the motor and verify if it's good or bad?
Anyone ever tell you that you look and sound just like Mark Pellegrino?
👍
Son los motores de evaporador más malos del mundo el módulo electrónico dura de 2 a 3 años casi siempre
Do you know if the Dc voltage is the same for 120volt gas furnace blowers ?
It is the same