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 Jonathan