expired Posted by v_h • Last Tuesday
Jul 8, 2025 12:07 PM
Item 1 of 3
Item 1 of 3
expired Posted by v_h • Last Tuesday
Jul 8, 2025 12:07 PM
Prime Members: Midea U-Shaped AC Window Air Conditioner: 10,000BTU $320, 8,000BTU
& More + Free Shipping$280
$380
26% offAmazon
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Anyway, mine was on the list (less than one year old, from Costco), filled out the webform immediately after the recall, they sent me a link for a photo of cord cut, did that in a week and in three weeks I got the virtual debit card.
As an engineering (ECE&CS) professor, I decided to read up on the LCDI (Leakage current detection interface) protection they use. This is what I learned and just for information.
It is for cord damage and current leaking (from Line or neutral) out of the conductors leading to quick fire (cause: dog chewing, people stepping on it or AC sitting on the cord, you name it; A simple caution perhaps a better choice but this is first world with first world solutions). I found two small sensor wires outside of L and N conductor insulating jackets and each wrapped in something like aluminum foils. These two sensor lines and sensing/actuator electronic circuit are used at the plug end to sense any leakage and trip the circuit. At the device end (the AC or whatever), these sensor wires seem to be not connected (I also kind of guessed this from looking at AC replacement cords available at HD or Amazon as I did not want to spend energy opening up the AC unit. They are PITA) and simply shorted at the device end and sealed with electrical tape or equivalent.
I came across a circuit schematic by a tear down of the LCDI plug but that diagram seems to be little different from the one used by Midea (everyone has their own patented circuit). But again, I did not open my LCDI plug. Too much unnecessary work for this senior citizen
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Excellent price -- almost the lowest ever! I'm sure Midea is desperate to clear out their unsold stock since they were unable to sell it during the peak AC sale period.
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Edit: pricing
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They'll give a refund, proof of cutting cord, using trupic
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Anyway, mine was on the list (less than one year old, from Costco), filled out the webform immediately after the recall, they sent me a link for a photo of cord cut, did that in a week and in three weeks I got the virtual debit card.
As an engineering (ECE&CS) professor, I decided to read up on the LCDI (Leakage current detection interface) protection they use. This is what I learned and just for information.
It is for cord damage and current leaking (from Line or neutral) out of the conductors leading to quick fire (cause: dog chewing, people stepping on it or AC sitting on the cord, you name it; A simple caution perhaps a better choice but this is first world with first world solutions). I found two small sensor wires outside of L and N conductor insulating jackets and each wrapped in something like aluminum foils. These two sensor lines and sensing/actuator electronic circuit are used at the plug end to sense any leakage and trip the circuit. At the device end (the AC or whatever), these sensor wires seem to be not connected (I also kind of guessed this from looking at AC replacement cords available at HD or Amazon as I did not want to spend energy opening up the AC unit. They are PITA) and simply shorted at the device end and sealed with electrical tape or equivalent.
I came across a circuit schematic by a tear down of the LCDI plug but that diagram seems to be little different from the one used by Midea (everyone has their own patented circuit). But again, I did not open my LCDI plug. Too much unnecessary work for this senior citizen
I did like it while it worked.
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