I have a Bosch fridge freezer, one of the KGU29 frost free series from
2000. The temperature in the freezer section is too high and there's
a frost buildup. I'm having problems matching up the generic
instructions in the repair faqs to my specific model.
What I don't get:
(1) Is the defrost timer likely to be on the PC board as I can't find
it anywhere? I am thinking it's unlikely the timer has broken if it's
electronic and everything else is working fine.
(2) There are five power inputs in the freezer: evaporator, fan
(working), thermostat (correct resistance), "Heater-defrost",
"Heater-element". Why are there two heaters? The resistance of one
is 310ohm and the other, 2400ohm, which looks high - probably going to
try replacing it first.
Anyone know how to get into service mode on these Bosch No Frosts?
Specifically, how to force defrost mode so I can do further tests?
Thanks in advance