Bosch B22CS30SNS/01 not cooling properly…

Problems with my Bosch B22CS30SNS/01…

First symptoms, yesterday:
Freezer not cooling to 0. Thermometer temperatures in freezer about 17 degrees. Fridge compartment o.k. at 36.
Powered off five minutes, restarted. Similar results throughout the day

Today:
Freezer temps continue to rise (28 degrees), now fridge compartment is about 50.

Testing so far:

  • Powered off fridge for five minutes, then on.
  • Held “+” and “-‘ buttons down until self-test mode was entered. Display cycled “L1” to “L10”, but no error codes displayed.
  • Removed lower inside freezer cover. Coils have a light coating of frost on them. The visible freezer fan shown runs when door is closed (or door button is pressed in).
  • The currently hidden fridge fan runs (can hear it) when the door button is pushed in.
  • I have not pulled the fridge out from the cabinetry yet. I must lower the front siders as it is currently wedged in.

I have a multimter, and am competent in its use, but have not made any measurements or tests yet, not sure what to test.

I’ve read through the highly informative thread on a similar fridge (https://www.applianceblog.com/mainfo…il-it-is-reset) and downloaded the service manual for that fridge, but mine is different.

A few questions to start:

  • Can someone post up the service manual for B22CS30SNS?
  • Is the test flow chart that was posted for B22CS50SNS in the other thread relevant for me?
  • If so, can someone explain how to perform some of the tests on the flowchart, and what the acronyms “OLP/PTC” means? Difference between and location of F and C fans? Is one freezer, one fridge?
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