My fridge freezer N500B is building up with ice in the fridge conpartment at the back off fridge

Victor

• 1136 Answers

SOURCE: water dripping from freezer onto top shelf of fridge with ice buildup back of freezer

Hi, What brand/model# is this unit? I can help

Posted on May 23, 2009

Victor

• 1136 Answers

SOURCE: i have a CSX22GRB Hotpoint fridge and 1)the ice maker is not making ice 2)there is ice building up in the back of the freezer 3) the main fridge is not cooling

Hi, Id there ice or a frosty build up on the rear wall?
If it is ice, the drain is plugged. If it is frost, there is a self defrosting problem.
Please let me know so that I can assist you further.

Vic

Posted on May 28, 2009

Victor

• 1136 Answers

SOURCE: water dripping from freezer onto top shelf of fridge with ice buildup back of freezer

Hi, I can help you. The drain is plugged in the freezer section. Could I get the model #?
Some models need an after market drain heat strip added.
Please let me know and I can get you through tis.

Thanks
Vic

Posted on May 30, 2009

Charles T Nevin

• 4070 Answers

SOURCE: Fisher and Paykel N500B fridge freezer. Freezer not freezing

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 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.

Posted on Oct 28, 2009

SOURCE: Build up of ice on bottom of LG fridge freezer

water drain clogged !
see this page for a fix, it might suggest a fix to your frig a s well
Avi

Posted on Jan 13, 2011