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Posted on Feb 23, 2008

Defrost mode why is the defrost light on every day?

  • Anonymous May 11, 2010

    the unit defrosts about every 8 hours for 25-30 mins

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0duro

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  • Posted on Feb 26, 2008
0duro
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Typical defrost set up 8 times a day (24hrs)
duration about 20mins for the size you have described.
defrost stop temp should be 20 C
recovery time about 10 mins

so pls consult manuals and rest parameters.

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Related Questions:

0helpful
1answer

Is my defrost timer broken or my thermostat? The freezer was holding -30 temp but now is at +30.

Is the compressor running? If not - the timer could be stuck in defrost mode. If it is ruinning, then the freezer coil should be cold. If it is choked with frost & ice - then the defrost heater isn't getting powered (bad timer or defrost terminator - or is getting powered but has burned out.

You should allow the ice and frost to melt completely before turning back on again. Typically ice and frost don't build up so bad in a few days time to cause the temperature rise you're describing If getting cold - the compressor and refrigerant is likely OK, if not the defrost circuit is suspect. If compressor running but not getting cold - a refrigerant leak / charge level may be causing the problem.
0helpful
2answers

There is a light in my freezer. but, it doesn't get cold

Hello;

My name is Peter. I am a retired field service refrigeration technician.

You are locked into the defrost mode. This is where every 8-10 hours your unit will completely shut down except for the lights. At this time your defrost heater turns on for 20-30 minutes to defrost the evaporator (Cooling) coils in your freezer.


You can manually turn your unit back on, until you get a new defrost timer. If you have a up right freezer your defrost timer is in the lower back. It is mounted on a metal plate.

With a flat head screw driver turn the stem slowly one click at a time until your unit turns on. Once a day repeat this process to put your unit back into defrost until the timer is replaced.



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If you have a top freezer the defrost timer is located on the top of the fresh food section on the left. Do the same thing. The cost of the timer is about $30.00.

Send me your model number located on the side front wall of your fresh food section and I will proved you with the part number and walk you through the repair.
Feb 19, 2015 • Freezers
0helpful
1answer

True T72F defrost timer and lights not working?

You have done good work here young man. There is a relay or switch that is keeping the signal for being processed. I had the same similar problem with mine. At least your compressor is ok. Are you sure timer is wired back right.
0helpful
1answer

We have a Kenmore Elite Freezer Model #253.29082994. We had the freezer plugged in and it was working fine. We unplugged it and moved it and now when we plug it in it won't start. Is there some kind of...

You refrigerator was made by Frigidaire Adaptive Defrost Controls Frigidaire Refrigerator Trouble Shooting and Diagnosing
On the initial plugin, or when power is restored to the fridge after a power outage:
If terminating thermostat is open, the fridge enters a compressor (cooling) cycle.
If the terminating thermostat is closed, the first defrost cycle occurs 1 hour
after initial plug-in.
Maximum defrost cycle time is 24 minutes.
Minimum time between defrost cycles is 6 hours. (compressor runtime)
Maximum normal clock time between defrost cycles is 12 hours.
Maximum time between defrost cycles (in "vacation" mode) is 72 hours.
Vacation mode is not entered unless the door has not been opened in at least 24 hours.
Note that the ADC will only enter the defrost mode if the terminating thermostat is closed. If the terminating thermostat is open when defrost is initiated, the ADC board will wait for six minutes and then return to the cooling mode.
ASSUMING that the fridge has been on and running,
and the terminating thermostat is closed,
defrost is initiated by pressing the door (light) switch
at least five times within six seconds.
The defrost heater should start heating up within 8 seconds.
If the above procedure caused the heater to heat up, the ADC board is probably bad; replace it.
If the defrost heater does not heat up, test the defrost heater, terminating thermostat and cold control for continuity as follows:
Unplug the fridge from the wall. Unplug the ADC board from its connector.
Test the connector for continuity between the following leads:
Defrost Heater = DEF TERM (blue) to DEF OUT (brown).
Terminating Thermostat = DEF TERM (blue) to NEUTRAL (lt blue).
Cold Control = COLD CONTROL (orange) to L1 (black).
Replace the defective component.

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0helpful
1answer

THE FANS AND COMPRESSOR DO NOT WORK BUT THE LIGHTS DO

Good day,
What you seem to be saying is it isn't running. If the lights work it has power, so the items left are the cold control (thermostat) not turning the machine on, or the timer that shuts the machine off to defrost the coils has failed in the defrost mode (off).
There is a small chance a wire has been disconnected or is broken, but is a rare issue.
With no model number that is the best info I can give and are common problems.
0helpful
1answer

Freezer defrost cycle

If the defrost timer sticks in the defrost mode,yes. Normal defrost time is 30 minutes or less depending upon which timer is installed.
If it happens again,locate the defrost timer and turn the dial manually to see if the compressor comes back on. If so,replace the timer.
It is probably on the rear near the compressor. Some are under the front behind the dust guard.
0helpful
1answer

Bosch fridge frezer

gas is sealed for life....sounds like it is auto defrost mode.leave switched on. after a full manual defrost. for at least 24 hours to settle down keep door shut... then check. should reset itself.make sure all vents,drains are clean.
Feb 14, 2010 • Freezers
4helpful
1answer

Whirlpool AFB126/H/AL Freezer - Defrosting & Refrosting

Hi. I am Kelly and welcome to FixYa. Here is the real question..... Is the food staying frozen?

Freezers usually defrost 3 times a day (8 hr intervals) Some as often as 4 times a day. The freezer use concept is that it is not opened more than 3 times a day. (Yes there will be more times than that any given week)

Having said all of that.... some things to look at.

1. Check the door seal for any signs of tears... grease... collapse...

2. Make sure there are no gaps in the door or between the closed door and the seal.

3. Many people don't check this one... but make sure it is level. An un-level freezer can cause the door seal not to function correctly.

Now if your saying that the food is actually defrosting... then there are a few other things that can cause that.

A. Sticking / defective Defrost timer

B. Defrost element is not heating and the freezer goes through a VERY long defrost cycle as the contents have to reach 60 Deg F for the 60 Deg bi-metal thermostat to close and advance the defrost timer to start the compressor.

C. Intermittent operation of the 60 Deg thermostat

I hope this clears things up a bit for you.

Thanks for using FixYa.

Kelly
Feb 10, 2010 • Freezers
0helpful
1answer

I changed the defrost timer and is not getting cool.

Give it time. The defrost timer may be in defrost mode. If your machine has been off for a while it will take a day for it to get kosher.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

Apr 09, 2009 • Freezers
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