Dean B

[Dean B]

Yeah TSD on a refrigerator compressor

[Dean B]

Ok If asking question on Appliantology is too much of a hassle then ok i’ll ask question here. The only reason why i prefer Appliantology is because i can post pics there. I just don’t know how to do pics attachment here it’s much easier to deliver a message across.

[Dean B]

I’m in the process of re-capping whatever i have learned in the refrigerator course. If I move on now im sure i’ll forget them

[Dean B]

“What do you think is different in a double compressor system from a single compressor system?”

It depends on what type of compressor that are present in the system, I think. They will also determine the start device or inverter, right?

“Why? Because the label is different? If something is labeled “VCCI” does that mean it FUNCTIONS differently from any other variable frequency drive system?”

Yes the labeling really threw me off. VCCI sounds super intimidating and I did not even know this was a dual compressor system.

How do you do that quote thingggy?

[Dean B]

If you asked me to diagnose the VCCI inverter thing, I don’t know how to.

[Dean B]

I don’t know about double compressor system. I’m only familiar with single compressor system like you have taught in this course. There has to be something different about how you diagnose a double compressor system.

[Dean B]

If a split phase compressor doesn’t run, testing the 3 posts for resistance should be good enough to determine if the compressor is in specs, correct? If the 3 posts are within specs but doesn’t run, even if the start device doesn’t show no visual defect, I can safely conclude that it’s bad without testing right?

[Dean B]

Uh…. do you have a chapter in the course where you talk a bit more details about it? I don’t remember learning about it.

[Dean B]

No my question is about the VCCI Control Box. Is this a compressor and how often do you see it in the field? I did not know Dual Compressor system is out there.

[Dean B]

Got it. Thanks!

[Dean B]

It’s there to control the speed of the bldc motor

[Dean B]

He was measuring voltage supply to both condenser fan and evaporator fan on a GE refrigerator. He initially did a DC supply and DC ground voltage measure to test if the control board was supplying proper power to both fans.

[Dean B]

I saw someone on Youtube he measure the voltage supply from Ground to PWM. Was what he did valid?

[Dean B]

The PWM wire is there to control the speed and voltage going to the motor. The built in inverter inside the motor takes the pwm signal from the control board. SO i guess I’m measuring the inverter’s voltage supply?

[Dean B]

Im still a bit iffy on recognizing these bldc on the schematics. Can you provide some schematics so that i can get used to them? THanks

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