Dirty Dishes - Bosch Dishwasher

I have an ongoing problem with my dishwasher. The washer runs for a very long time but the dishes are luke warm and dirty when the cycle ends. The pump works well and water is moving and spraying.

When first owned the unit, we could hardly touch the dishes as they were so hot at the end of a wash cycle. Now they are luke warm and not clean.

I have replaced the complete water heater assembly (including the sensor). This did not help.

The washer often runs for 4 hours +

Any ideas?

any ideas???

Very likely the problem is a bad control module.

The disassembly instructions are attached to the reply.

Here are the breakdown diagrams and Replacement parts for Bosch SHU9955 UC/12 (FD 8105 -) | AppliancePartsPros.com

Gene.
Control board removal in integrated models.pdf (309.6 KB)