Question about Paragon 8145-20 Defrost Timer

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Goes to defrost end fan go out end heather go in but compresser will not stop

Its a walk-in frezzer has 404a refrigerant my pressure is low site 26 end high302 end temp at 28 f

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1 Answer

What is the suction pressure low side and high side charging 404a refigerant cooling temperature


evap temps usuall run 10-15 degrees below the box temp.This a generally accepted rule of thumb.

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Defrost timer 8145-20 goes to defrost end fans go out end heather go in but compresor will not stop


Is this a hot gas bypass defroster with a switching valve? If so, the compressor should be on.

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Low pressure on suction side and no cooling


If your running 134 a your short of gas
if your running 404a your short of gas
check the super heat it should be 5 ktd

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I have a walk in freezer with 404a, I am reading about 25 on the low side,the outside temp is about 110 degrees,its not low on freon,and everything seems to be working fine, except I cant get the temp down...


What is the high side pressure?
Are the indoor and outdoor coils clean?
Indoor and outdoor fan motors working OK?
Ice on the coils or expansion valve?
Is the unit sized correctly for the space?

Aug 08, 2011 | Refrigerators

1 Answer

Hi,i have fisher pakel E522B with frezzer on the bottom the fridge goes warm and the frezzer section is all iced up.pulled back cover of frezzer off and removed fan,tested fan across 5v ph charger fan...


HI,CHECK FOR CONTINUITY ON THE DEFROST ELEMENT AND B-METAL IF THOSE COMPONENTS PASS THE TEST MAYBE THE TIMER OR DEFROST CONTROL COULD BE BAD IN YOUR REFRIGERATOR..GOOD LUCK..

Jul 04, 2011 | Fisher and Paykel Active Smart E522B...

1 Answer

FRIDGE STAYING AROUND 25 DEGREES


you have a gas leak , a refrigeration mechanic is required.

May 10, 2009 | Admiral 26 cu. ft. Side-By-Side...

1 Answer

Evaporator unit keeps on building ice. question what is the nornal operating pressure on low side and on the high side for truee freezer using 404 refrigerant


I'll try to give you the "Readers Digest" version.
First, make sure there is no ice build up on the evap. Light frost is O.K. as long as it does not effect air flow. (Very Important). All fans need to be running. Again, an air flow thing. There should be some product in the box but not too close to the evap. Again, an air flow thing.
The expansion device can effect your pressures to some degree i.e. Cap tube vs. TXV.
As a general rule of thumb, which I use almost everyday when it comes to pressures:
Low side is based on the temp difference between evap temp and condition space in the box. In freezers, it is almost always 10 degrees. If the box is 0 degrees then the evap needs to be at a minus 10 degrees. That is a pressure for R-404A of 24.5 psi. This only holds true when the temp in the box is approching set temp. I would say, about +10 degrees. 0 Degrees for the evap for R-404A is 33.5 psi.
High side should be ambient temp +30 degrees and then convert to a pressure for the refrigerant.
Example: 75 degrees in the room, +30 degrees equals 105 degrees. Now 105 degrees converted to a R-404A pressure is 253 psi. This will get you very close to the desired high side pressure.
I would look at low side first to see if it is within reason. Don't let the high side get too high. Increases the compression ratio and overworks the compressor.
Your icing problem could be a defrost issue and not a refrigerant charge issue.

Good Luck and hope this gets you started.

Apr 07, 2009 | True 49 cu. ft. / 1388 liter Commercial...

1 Answer

FREEZER SOUNDS VERY NOISY


I turn off the power of refrigerator for 24 hours and defrost the frezzer. The noisy sound stopped. I think sometimes we did not close refrigerator tightly, the ice built up caused the problem.

Jan 04, 2009 | Jenn-Air JCD2389G Side by Side...

1 Answer

DRAIN BLOCKED WITH ICE


It sounds like you need to install a drain heater. Sometimes these are available as a kit from a parts dealer, and sometimes you can just take a piece of bare solid copper or aluminium wire and put it a little ways down the drain, then wrap the other end around the defrost heater, so that when the fridge goes into self defrost, it keeps the drain warm so it does not freeze. The better way to do this repair though is to see if a drain heater is available for you model as a direct fit part. The other way is only to be used as a last resort. Good Luck!

Oct 10, 2006 | Samsung SRS20DTD Side by Side Refrigerator

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