Australasian Appliance Forum

[coldturkey]

Hey, I have a Fisher and Paykel SmartDrive 603 washing machine that got wet in the control board (cause I forgot to put a seal on one of the valves, duh).

It keeps blowing fuses, I disconnected some stuff and narrowed it down to the yellow wire connected to this long hollow metal thing. What is it exactly? Water comes in from the valve tank area into the end with the blue flange, and flows through it and back (its divided in the middle lengthways up the inside).

Apart from acting as a heatsink for a whole bunch of FET's (what are the FETs for??) first I thought maybe its a flow sensor, but it the washing machine works on level not flow. Is it a temperature sensor?

It seems to work alright without it connected. Should I be worried running it without this thing?

Thanks

[ratbag_359]

Those parts are FETS for the motor control and the 15v switch mode power supply and the 5 volt regulator for the 5 volt rail ant the triac for pump control and the break mosfet.
That metal thing that has the water go through it is a heat sink to stop the fets and voltage regulator and triac from over heating. It also has the break resistor it's between the red and yellow wire the resistor is in the heatsink in a glass tube. there is also a temperature sensor attached that tells the computer the water temperature for filling as well as when washing and spinning if the heatsink gets to hot it will send a burst of cold water to cool it.