Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
I insulated the 2 wires (brown and blue) and power up without the overload protector just to confirm if the circuitry is working - and compressor not starting up as expected.
Then I put everything back per normal, power up and rerun the Self Diagnostic one more time (which I have done multiple times), and paid really close attention to the indicator displays at the door panel - OMG!
2 of the indicator lights blinked a few times then went off. I waited for a minute or so, nothing happened and all the indicator display lights were off. I have done this a few times and it always the same outcome.
I was thinking since the outcome is nothing lighted up - so the fault should be the at the end of the flowchart:
• Faulty compressor motor.
• Compressor lock.
Now, looks like it is at #4:
• Defect of control PCB.
• Communication error between IC1 & IC201
So I guess I just have to source for a working controller board!
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by petehall347 View Postso it is really 0.2 ohms which seems good
have you tried fast freeze yet ? it should bypass the thermostat .
I should clarify, that the fridge is always power down. Each time I did some checks, or taking measurements, I would power it up for like 5- 10 minutes, then I will power down the fridge.
The longest I have left it power up is ~30 minutes, and still no cool air at all..
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by stj View Postthe + end of the bridge rectifier is darker, marker pen, soot, burn mark??
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by beetle1303 View PostWeird.. Now it reads 0.7 ohm, and touching the 2 leads together reads 0.5 ohm.
have you tried fast freeze yet ? it should bypass the thermostat .Last edited by petehall347; 04-21-2020, 06:54 AM.
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
the + end of the bridge rectifier is darker, marker pen, soot, burn mark??
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Weird.. Now it reads 0.7 ohm, and touching the 2 leads together reads 0.5 ohm.
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
try putting your meter leads together then deduct the reading from 3.2 .
have you tried fast freeze function ?
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by petehall347 View Postthat thermal looks broken ...
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by R_J View PostCheck the resistance between pins 1 & 3, it should check like a short. It trips with excess current not voltage.
Noted your correction, important for my education, thank you.
Presumably, if the compressor draws too high current, the temperature rises above the limit and trips open this protector, and cut off the power to all 3 terminals of the compressor?
In my case, the voltage among all 3 terminals were 160VAC soon after powered up, does this mean the compressor is not overloaded?
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by stj View Posti suspect the motor may have a bad phase or drive line,
if it hums then the electronics are trying to run it.
we need board pics.
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by Per Hansson View PostCould you put this original picture somewhere so I can make some tests with it?
(Obviously you would need to use some other website if you get the error above here...)
** I just did a resized from 15mb to 4mb, then it loads OK.Last edited by beetle1303; 04-20-2020, 10:10 PM.
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by beetle1303 View PostOn the overload protector - how do I determine if it tripped open due to over-voltage or not?
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by beetle1303 View PostBased on this sensor specs, I believe the 2 sensors I tested measuring at 1.58kOhm at ~26-28c, and 5.8kOhm at 0c should be working normally.
On the overload protector - how do I determine if it tripped open due to over-voltage or not?
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by Per Hansson View PostCould you put this original picture somewhere so I can make some tests with it?
(Obviously you would need to use some other website if you get the error above here...)
It looked like I calculated the bytes-to-megabytes correctly.
Normally, this would look like a server-end problem.Last edited by RJARRRPCGP; 04-20-2020, 01:45 PM.
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by beetle1303 View Post*for some reasons, I frequently get this error when uploading pics:
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 27000001 bytes) in /home/badcaps/public_html/forum/includes/class_image.php on line 2390
Any idea why this is happening?
(Obviously you would need to use some other website if you get the error above here...)
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
i suspect the motor may have a bad phase or drive line,
if it hums then the electronics are trying to run it.
we need board pics.
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by beetle1303 View PostI believe this is due to the file size too big. My phone pics are 3-4mb and I had to do a simple screen capture to reduce the size, and it works.Last edited by RJARRRPCGP; 04-20-2020, 09:35 AM.
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Based on this sensor specs, I believe the 2 sensors I tested measuring at 1.58kOhm at ~26-28c, and 5.8kOhm at 0c should be working normally.
On the overload protector - how do I determine if it tripped open due to over-voltage or not?
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by RJARRRPCGP View PostThat's strange, I've had no problems uploading images during the last time I uploaded photos.
I think it's because they are being shrunk for me...
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Re: Panasonic Inverter Refrigerator model NR-BY602XS - suddenly not cold overnight
Originally posted by budm View Post"When probed at the cable connector, it measure 1.58k ohm, but when power up and probed at the connector pluck back onto the controller board, it measured 0 ohm, ~2VDC.. "
You do not perform resistance reading when the circuit is powered, you can easily damage your meter. Please read your meter user manual.
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