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Old 06-20-2021, 12:26 PM   #1
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Norcold fridge clicking on shorepower

I have a Norcold N611 fridge that has a solenoid chatter which appears to be from unfiltered terminal on a Parallax 6300 power center/converter/charger. My question is has anyone been successful in transferring the fridge to another filtered terminal. I appears as though I could simply move the plugs on the back of the unit, swapping 1-3 for 7-9 and move the fuses accordingly. Terminals 7-9 are filtered but not the others. If I use any 12v power such as turning on a light the clicking stops. Any input on this?? Thanks in advance:
Brian
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Old 06-20-2021, 06:53 PM   #2
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Old Bisquit, where are you!

He's THE guy for info about Norcold fridges.
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Old 06-20-2021, 08:35 PM   #3
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As an update, I switched the plugs around at the rear of the panel so the fridge would be on the filtered end of the block and I still have the ripple, chatter. I guess I will be shopping for an upgraded convertor. Any suggestions or recommendations on the replacement?
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Old 06-20-2021, 08:47 PM   #4
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Before throw parts at problem....do some testing to ID the issue

Original converter since 2008?
Here is Service Manual for that 6300...tests to verify converter functions
http://www.hayseed.net/~jpk5lad/RV%2...%20Binder1.pdf

Upgrade for that Brand/Model converter
https://www.bestconverter.com/Upgrad...llax_c_64.html


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Fridge Clicking sound when plugged into AC Power.
Any error codes on fridge?
Clicking would be the AC Relay on circuit Board (DC triggers it) to allow AC Power to fridge element

When plugged into AC Power...fridge in AUTO and on AC
*turn off AC to the converter...(many times the AC to converter is piggy backed on Circuit Breaker for something else)
With AC off to converter...fridge still CLICKING??

Service manual for the N6XX/N8XX series
http://techsupport.pdxrvwholesale.co...er-619394E.pdf
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Old 06-21-2021, 11:12 AM   #5
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Thanks for the reply. I have tested the power and gotten an ac ripple on the converter power. With any draw on the inverter such as a light turned on it is enough to stop the relay from clicking. I pulled the board from the converter and found a bank of resistors 5 or 6 that have heated the board enough to blacken a 1 1/2" or 2" square area on the board. Time for an upgrade. I have ordered a pd4645 to replace it. I have an upcoming long trip and I don't need a problem on the road. I could continue to use with a light on but I am afraid of cooking the fridge board if I forget to turn it on. Still charging and powering loads fine, but---
Again I appreciate the reply.
Brian
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Old 06-21-2021, 11:16 AM   #6
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Can you just run it to your 12 VDC battery???


The battery is a pretty good filter.
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Old 06-21-2021, 12:13 PM   #7
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Quote:
Originally Posted by wolfe10 View Post
Can you just run it to your 12 VDC battery???


The battery is a pretty good filter.
If connected to AC Power would need to turn AC to converter OFF
But many times AC to converter is piggy backed onto another CB so what else would be OFF???

Also with converter OFF ...no battery charging???

Battery DC is CLEAN.......no AC ripple cause it is Direct DC




OP
Good upgrade!

Curious:
How much AC Ripple did you get?
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Old 06-21-2021, 09:49 PM   #8
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It was hard to read exactly as my meter was fluctuating quickly, low being 2.5 and high being 4.5 approximately. I believe the overheated resistors may be part of the filtering circuit. I am sure I will be happy with the upgraded charging profiles as I don't care to cook my batteries.
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Old 06-21-2021, 10:44 PM   #9
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Less then 6VAC Ripple is acceptable

Upgrade will be welcomed.....
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Old 06-23-2021, 09:22 PM   #10
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I will try to get another reading while I am waiting for the replacement. You got my curiosity with that number, hope its not the fridge on the way out. To be honest, I didn't spend much time trying to get an accurate measurement, as I thought it was already to high.
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Old 06-23-2021, 10:15 PM   #11
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Quote:
Originally Posted by sandwip View Post
I will try to get another reading while I am waiting for the replacement. You got my curiosity with that number, hope its not the fridge on the way out. To be honest, I didn't spend much time trying to get an accurate measurement, as I thought it was already to high.
Doubt your fridge is on it's way out

Discolored resistors.......circuit board is
Time for new one
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Old 07-08-2021, 10:17 PM   #12
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Just an update on the clicking fridge solenoid. I replaced the convertor with a 45 amp PD unit. No more clicking on the fridge. I believe the filter section of the original unit was toast and giving me ripple. Happy now with a multi stage charger. Thanks again to all that replied for the advice.
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