When I ran the diagnostic test described, the F35 fault error comes up during the C00 phase of the test. This signifies a certain problem (for example, nsekeas states "Should go thru all 9 cycles (C00 - C09). Mine went to F35 after C01 which refered to cold water inlet valve"). Anybody know what the F35 error means when it comes up during the C00 phase?

Do "we" know what appliance, which model, you are asking about? Washing machine?