Question about Paragon 8145-20 Defrost Timer

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How to wire the paragon defrost time with the element heaters inside the 2 evaporator fan freezer

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Your refrigeration circuit should be connected to terminal # 4, as this is the normally closed set of contacts, and the heaters should be powered from terminal # 3 as this is the normally open set of contacts. Hope this helps.

Posted on May 07, 2010

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Posted on Jan 02, 2017

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I need the compressor to run for a longer period of time. what do I do? Does the defrost timer has anything to do with it


Yes, when the defrost cycle is running the compressor isn't. Defrost timer should run a defrost cycle twice a day. Interval is 12 hours, defrost usually takes 20 to 30 minutes. Some cycle the compressor backwards slowly to warm the evaporator and melt the frost faster. I had a commercial walk in freezer that defrosted every 2 hours and had an evaporator heater element. The timer switches off the compressor and turns on the heater.

May 01, 2016 | Paragon 8145-20 Defrost Timer

2 Answers

Where is the defrost heater


Defrost heater is going to be very close to the evaporator inside the freezer section. Take the evaporator panel off that sometimes has the evaporator fan connected to it. There you will see a dark tube that bends back and forth with wire connections on each end. That is the defrost heater.

Nov 10, 2013 | Kenmore Elite 22.4 cu. ft. Bottom Freezer...

1 Answer

How to wire a paragon defrost timer with liquid line solenoid valve t-stat electric heater for walk in freezer


page 20 in the heatcraft refrigeration manual shows how to interface a paragon defrost timer with the t-stat and evaporator coil.

Oct 21, 2012 | Paragon 8145-20 Defrost Timer

2 Answers

Side by side Maytag refrigertor that is not chilling on the refrigerator side. Freezer side fine. Refrigerator compartment cold up about a third of way.


Due to only lower cooling of the refrig , this sounds like the freezer fan which circulates the cold air into the refrig , has stopped working . This will be one of two things . Freezer fan not working or defrost problem . Open the freezer door and listen for the fan . If you do not hear the fan , remove the inside freezer panel ( lower ) by removing the 2 screws . If the fan is not working , replace the fan motor . If the coils are coated with thick frost , you will need to check the defrost system . Unplug the refrig and inside the refrig section at the top about 2" in from each side in the back , there are "D" slots to put a finger in , and pull downward and foreward , to remove the control panel cover . Once removed , there is a 1/4" screw on each side holding the adjustment indicator panel on , 1 phillips screw behind both light bulbs , and 1 screw holding the complete panel to the rear wall . After removing these 5 screws , at the top right corner , with about 6-8 wires going to it , is the adaptive defrost board . Sometimes you can see the electronic board and on newer refrig's , a white box will be seen. Inside this box , is the adaptive defrost control . Disconnect the plug going to the board and on the right side of the PLUG , the far right wire is yellow , then another color , then white . Useing a small insulated wire with both ends stripped , insert one end into the yellow wire hole and the other into the white wire hole . This will bypass the adaptive board and send power directly thru the defrost bimetal ( thermostat ) AND heater to check if they are good .Plug the refrig back in . Now , wait about 3-5 min and look for a red glow at the bottom of the inside freezer panel , which will be the defrost heater or listen for sizzling which will be the frost melting and dripping onto the heater .If NO red glow , watch for a spark while removing the jumper wire you installed , from the plug . If a spark IS seen , then the heater was on and the heater AND bimetal are good . If you see the red glow , hear the sizzling , or see the spark , then the adaptive defrost board should be replaced . If no glow , sizzling or spark , then unplug the refrig and reinstall the refrig control section .
Remove the food in the freezer section enough so that the 2 screws holding the lower freezer panel on and the freezer panel , can be removed . Remove the panel . If the heater (black element at the bottom of the coils ) wires are visible , trace then to the top of the coils and disconnect . Use an ohm meter to determine if the element is good . If the element IS good , at the top of the coils , is a 1" cylinder with 2 wires , clipped onto the coils . This is the defrost thermostat ( bimetal ) . Replace this part if the element shows good . If the element shows bad , replace the element . NOTE 1 : sometimes the element and the bimetal come wired togather and the replacement part comes with a new heater and bimetal already wired togather . This would be the adviseable replacement part . However , each part can still be replaced individually . NOTE 2 : If looking at the bimetal and the top plastic " cap " looks cockeyed , replace the bimetal as moisture has gotten inside and disturbed its designed function .

Jul 31, 2010 | Maytag MSD2756G Side by Side Refrigerator

1 Answer

Refregarator get defrost at the meant time, frezer working well.


The problem is most likely the defrost heater element(s) and/or the defrost timer. The defrost heater element(s) are located with the evaporator core behind the access panel inside of the freezer, and can be removed, tested with an ohm meter, (any reading other than infinity would most likely mean the heater element is functional) and replaced if necessary. The defrost timer can be located inside of the refrigerator, or outside of the refrigerator behind the front kick panel, or behind the rear access cover on the back of the refrigerator.

Usually if the evaporator core is freezing up and not allowing air to flow through the evaporator core, (necessary for the system to function properly) then the defrost timer is most likely working and the defrost heater element(s) would most likely be at fault.

Always place a towel on the bottom of the freezer and use a blow dryer to defrost the evaporator core and never use any sharp or hard objects to pick away the ice or the evaporator core can be damaged and the refrigerant will be leak from the system.

I have included some images to help assist you, and a new defrost heater element or defrost timer can be purchased from an appliance parts distributor.


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Jul 17, 2010 | Amana ARB8057CSL Bottom Freezer...

2 Answers

Frigidaire Refrig. Freezer is working fine but Refrig is not cooling. The unit is only 2 years old - Help


, you might have a defrost problem. Frost free models have a heating element that is controlled by a timer to automatically defrost ice, defrost timer turns on defrost heating element every 12 hours to melt ice in freezer and allow good air flow.
You can test defrost element with an ohm meter(located inside freezer coils-will have two wires going to a plug connection), if OK replace defrost timer (located in various places depending on make and model

Aug 17, 2009 | Refrigerators

2 Answers

The evaporator keeps freezing up after about a week. I unplug it and lots of water leaks all over. after 2 days plug it in and it cools fine, about -10 to 0 temp.


Hi, With the information you supplied i'm going to assume there is an ice build up at the rear of the freezer. Your problem is going to be with your defrost system. I will also assume you have the ability to repair this yourself. This is going to be one of three problems with your refridgerator, 1st thing to do is remove shelfs and panel in the back of the freezer...you should see ice build up on the evaporator...don't worry get a hair dryer and melt the ice. Next locate the wires for the heater...using a multi meter test the heater for condinuity...if the heater is bad replace it, If the heater is good replace the defrost thermostat..the stat normally is a barrel looking part clipped onto the evaporator pipe. The last possible problem could be the evaporator fan, have you heard the fan running in the past few hours?..if you are not sure pull the panel out to where you can see fan and watch it over an hour to see if it turns. I have included links with pictures of what the parts you need to check are: http://romulusappliance.com/manufacturers/maytag/refrigerators/575432.JPG defrost stat http://www.hotekalliance.com/UploadFiles/2008627111553382.jpg heaters http://www.applianceblog.com/archives/EvapMotor1018185.jpg evap fan. Hope this helps. If you have any other questions please feel free to comment again. If you decide to get a repair guy in should not cost you any more then $120 - $200 depending on make/model/problem Good luck! P.s please don't forget to rate my solution....Mike

Aug 14, 2009 | Freezers

3 Answers

Set defrost timer on Paragon Electric Defrost-O-Matic


If the air flow and temperature are not being compromised leave it alone. If there is a gradual build up of ice on the evaporator you may have a defrost element or defrost limit switch problem. Set the defrost duration duration to 45 minutes and see if that solves the icing problem. 4 defrost cycles a day should be enough to keep the icing problem at bay. 3 defrost cycles at night about 1 hour apart may also remedy the problem. Experiment until you find the right combination of defrost cycles for your freezer. Watch for any thawing of the product in the freezer and adjust accordingly.
Bills Refrigeration/Montana.

Nov 14, 2008 | Paragon 8145-20 Defrost Timer

5 Answers

Refrigerator freezes up


PLEASE DISREGUARD GUEST FIXYA SOLUTION,FREEZER PROBLEM PROCEDURE IF NOT DEGITAL,FIRST CHECK IF ICE ON BACK FREEZER WALL. STEPS-FIND DEFROST TIMER,BOTTOM FRONT ,BOTTOM BACK, INSIDE FRIG.ON CONSOLE,LISTEN TO SEE IF FAN IS RUNNING IF SO TURN THE DEFROST TIMER CLOCKWISE TILL YOU HEAR A CLICK SEE IF FAN TURNED OFF IF SO YOUR FREEZER IS IN DEFROST,FREEZER WILL COME OUT OF DEFROST IN 20-30 MINUTES IF IT DOES AND THE FAN COMES ON YOU HAVE ELIMINATED DEFROST TIMER&FAN,NEXT REMOVE BACK PANEL TO FREEZER IF THERE IS ICE FORMING REMOVE BOTH LEADS TO HEAT AND CHECK WITH VOLT METER ON OMES,IF YOU GET ANY READING THE HEATER IS GOOD,IF NO READING REPLACE HEATER AND CLIPON TEMINATOR,IF HEATER IS GOOD DEFROST COILS WITH HAIR DRYER TOP TO BOTTOM AND THIS WILL ALSO CLEAR THE DRAIN,IF EVERYTHING CHECK OUT GOOD DEFROST TIMER ,FAN ,HEATER, DRAIN, YOU NEED ONLY TO REPLACE THE LITTLE ROUND CLIP ON TERMANATOR,LET ME KNOW-MIKE

Oct 13, 2007 | Kenmore 55612 / 55614 / 5561 / 655619 Side...

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