|View single post by The Seven|
|Posted: Sat May 7th, 2005 05:14 pm||
For the past two years my seven year old Whirlpool (ET21DK XDN05) has had the defrost drain tube freeze up with increasing frequency.
Not counting the recent "repair", did you have any repair before? Is so, could you recall what have been done.
It sounds that you have a "minor" defrost problem. The "frost" is not melted satisfactorily during the defrost cycle. The frost is graduately building up and you have done the right thing to defrost it manually once a month.
The "minor" defrost problem could be caused by "insufficent defrost heating"; such as
a) defrost thermostat should cut-out (OFF) at about 70F, but you may have a "bad" one which cut-outs too soon ; or
b) defrost timer should provide a "good" contact to the heater, but you may have a a "bad" timer with "pitted and high resistance" contacts ; or
c) there could be a " high resistance connection" in the heater circuit.
(b) and (c) could be checked by measuring the voltage between the terminals of the heater when the timer is advanced to "defrost cycle".