Question about Paragon 8145-20 Defrost Timer

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My defrost timer 8145-20 will go to defrost en fans go out end headers go in but compresor will not stop

Walk-in frezzer r404a low 26 hihg at302 temp insite 28f

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1 Answer

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.

May 07, 2014 | Paragon 8145-20 Defrost Timer

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

Refridgerator will not get cold, frezzer portion works fine


The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. Make sure this fan is running. You may have to hold the door switch in for it to run. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp.
The problem could be the electronic control if you have one or the mechanical linkages.

If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it'll be the control.

Jan 21, 2011 | GE Profile Arctica 25.4 Cubic Feet...

1 Answer

Hi i have a ge profile side by side. the digital temp inside the refrigerator side is reading frezzer 23 refrigerator 47. The frezzer wall is iced up. when i press against the frezzer wall the coil feels...


The evaporator coil behind the cover on the back wall inside the freezer will ice up under normal conditions. Every 8 to 10 hours for around 20 minutes the defrost timer (or in most newer models the electronic adaptive defrost control) will turn the defrost heater on to melt the built up ice. There is a defrost thermostat which prevents the heater from overheating the freezer by breaking the heater circuit when the temp reaches close to 32 degrees F. The entire cooling system shuts off during the defrost cycle and starts back when the timer advances through the cycle.

If this ice is not melted it will continue to build up until the air can't flow over the coil to circulate the cold air through the freezer and into the fridge. The temperature change in the fridge is usually noticed first followed by the freezer.

If the defrost thermostat is bad, it can prevent the heater from coming on OR it won't turn the heater off when it gets too warm. It is clamped to the evaporator coil at the top to sense the temp. If it appears to be misshapen it is bad.
With an ohm meter it should show continuity when cold and none when warm.
You can also bypass(disconnect the two wires plugged into it and twist them together) the thermostat to see if the heater comes on then. If it does then you know the thermostat is bad and needs replaced.

The defrost heater is located on the evaporator. It is in a tube which is at the bottom and can also go up the sides of the evaporator. On some types you can see a burnt spot if it's bad. With an ohm meter it should show continuity from end to end when disconnected from the wiring in the freezer. You can also test the wiring for voltage when it's in the defrost mode.

If you have a defrost timer you can test it. It can be located under the fridge behind the kick panel on the front. Some are in the fridge with the controls at the top. You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer because that means the timer is not running. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.

If you have an adaptive defrost control instead of a timer, replace it if the heater and thermostat test good. It is located in the fridge with the controls in some models and on the back in others.

Sep 27, 2010 | GE Profile PSW26P Stainless Steel Side by...

1 Answer

My Ammana Freezer is not defrosting. I need to figure out if it is the Defrost Thermostat Defrost Timer or the heating element. What should I do first?


in most cases its the defrost element as the other units last much longer unless the fan has become jammed this happens when people toss meat hard against the back wall if you know how to do polaity test using a multimeter do test on defrost element its not a thermistate as new age frezzers dont use them they use timers and plastic channels to curculate cool air

good luck need more addvice email me

Jun 25, 2010 | Nor-Lake Freezer Norlake Refrigeration 6'...

2 Answers

Not cooling as normal 2008 summit ridge reserve dometic rm 1350 with ice maker. started acting up last year, fans not coming on so I addedan external one .problem solved until recently lost power. now...


Below the evaporator fan is the evaporator coils. Remove the back cover in the freezer to observe the frost pattern. Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. Make sure this fan is running. You may have to hold the door switch in for it to run. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp.
The problem could be the electronic control if you have one or the mechanical linkages.

If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.


Sep 21, 2009 | Refrigerators

1 Answer

Amana Bottom Freezer 7 years old running but not cold.


Check to see if the condenser fan at the back underneath near the compressor is running. If no check fan.

Are the condenser coils near there warm or room temp. should be warm


How to check stuff>
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php


Is the evaporator fan in the freezer running. It blows cold air into the fridge side through a damper in the wall between the freezer and fridge. Make sure the damper is open.

Below the evaporator fan is the evaporator coils. Remove the back cover inside the freezer to observe the frost pattern. Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).
heavy frost-
If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.

Aug 25, 2009 | Refrigerators

1 Answer

Motor is running but both refrigerator and freezer are not cooling


Is the compressor motor running.If no check starter/overload relay.
Check to see if the condenser fan at the back underneath near the compressor is running. If no check fan.

Are the condenser coils near there warm or room temp. should be warm


How to check stuff>
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php

Below the evaporator fan is the evaporator coils. Remove the back cover in the freezer to observe the frost pattern. Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).

If the evaporator coils behind the back panel of the freezer are icing up(totally blocked) because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.


Aug 22, 2009 | Jenn-Air Refrigerators

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...

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