Bosch Ecxcel dishwasher SGS45e02GB/45

[Michael151]

Hi All,
I have this dishwasher.
It is not drying and, I suspect, not heating the water either.
I have managed to remove the control module, which contains two PCB boards.
The larger one I removed and it looks in as new condition (no sign of burning).
The smaller one is more awkward and I could do with three hands!

In use, the machine hangs at one minute. If I press reset, it reverts to zero, empties and then stops. This and other comments leads me to believe that the fault lies within the control module.
Is there a way of testing (safely) that the problem is not elsewhere within the heating circuit? It unlikely that the heating element has failed due to corrosion as I always keep the salt reservoir topped up. Does this machine have a diagnostic mode?

 

[rocks1]

check the heater relays on the pcb prone to dry joints you can meter the heater found on the right hand side.side panel needs to come off should read about 30 ohms .

 

[Michael151]

Hi All,
I checked the control module and all solder joints looked as new. After reassembly, the dishwasher partially fills and then partially empties. I've just replaced the flow rate meter (from another suggestion) and have exactly the same symptoms as before. The water level inside the machine is just below the coarse food filter (i.e. it looks empty) and not just below the salt filler cap. The LED display does not countdown. For some reason, on Economy the LED displays 199 minutes (and should be circa 156) but on Auto it is correct at 130. It is also correct on Quickwash and Pre-Rinse. The water matrix and pressure chamber areas look clean. Water is flowing into the machine from the hose at bottom right of the float valve. There is noo sign of water backing up and thus indicating a blockage. I wonder if anyone has any further ideas? (At least the flow meter was only £13.)