I have a frigidare frs22zrh upright side by side fridge/freezer and the defroster runs several times a days defrosting the food and causing a water puddle int he bottom of my freezer even though the freezer does not need defrosting... help.
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Re: My freezer's defrost systems runs constantly
I dont think so i would look at the compressor kicking out on thermal overload or a faulty thermostat thermostats have two settings cut in cut out your cut in could be bad and not turning the compressor on till the temp reaches melting temps now if your hearing a click buzz then you need to look at the compressor and make sure the compressor fan is running but its not a defrost promblem
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you machine has an electronic control instead of the old timers where you can manually advance the timer and out it in defrost. The part number 297282800 for it. The first thing you want to do is open the freezer and see if the fan inside there is running. The reason is the freezer cools the refrigerator side by circulating air from the freezer. If the fan is running then your problem is one or more parts of the defrost system is malfunctioned and in return your problem arises. There are three parts to the system, the defrost timer or in some cases control board, defrost thermostat also known as a bi-metal, and the defrost heater. The defrost system is set up to operate as so. The defrost timer or control board will turn the machine off, in some cases every 8 hours, some 12. During this time period the defrost heaters, located behind the freezer wall and rest underneath the evaporator, yet wires to them run up the side of it, are energized and emit heat that raises upward to melt the ice that has formed on the evaporator coils. The bi-metal or defrost thermostat is at the top of the evaporator. When the heat from the heater starts to reach the bi-metal, it breaks the circuit turning the heater off. The whole purpose of this is because the freezer cool the refridgerator side by drawing air across the coils and blowing to the other side via the evap fan motor. In my opinion, if you change one part of the defrost system change them all because usually when one part fails another will follow, so save yourself the time and the food loss, the cost difference is minute.
Your defrost timer has stuck to on position, replace timer and all good or locate timer and spray lubricant into the dial and turn it several times with unit off, then try it after several hours, quick fix only but may last several years...good luck...Russ
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 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 heateris
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
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. If you need help finding your model number see
Make it a habit to defrost it every week. You see, when ice forms around the evaporator tubes (which runs around the walls of fridge and freezer), heat exchange reduces (that means heat is no longer absorbed from the things inside the refrigerator) and cooling stops. See whether freezer walls or fridge walls are damaged. Do not use knives or any other sharp tools to remove ice. Do not forcefully remove items that are difficult to take out from the freezer. Defrost and remove them.
if it seems like the evaporator is getting cold then your sealed system should appear to be ok. you need the evap fan to transfer cold air into fresh food section. if not turning u need to replace fan motor. make sure your not getting to much frost build up on the evap.
Hi, Put a thermometer in the freezer and see if it gets down to 0 to 5 above zero. If it is not getting that cold, something is wrong. If you had frost building up behind the rear panel, there is a defrost problem.
Please let me know the temperature and I can assist you further.
You have a defrost parts issue.
Unplug the fridge. Remove the back freezer panel and check the defrost heater and defrost thermostat.
Without a model number I can not tell you where the defrost timer is.