Here are your parts
Replacement parts for KUDU02FRSS02 models | AppliancePartsPros.comSee the attachment for the tech sheet. I could not find one for a SS02 so it is for a SS0 but should be the same.
Not sure about the second no drain symptom you listed. It would point towards a control board problem but check the keypad/control panel.
Looks like P1-4 is common to the 3 keys you list as not working.
Note that the problem may still be on the control board.
The usual way to troubleshoot this is to check the keypad and if it is OK then replace the control board. Still a bit of a crap shoot but your odds are better.
Your unit looks like it has a separate ribbon cable so that also has to be checked. I would check the keypad by disconnecting at he control board and then checking that end of the ribbon cable. Then if you find a problem check the ribbon cable.
You may want to try the following first.
Connector Cleaning / Checking
Unplug the unit
Open it up
Remove the ribbon cable from the keypad to the control board at the control board.
Clean the edge connector.
If it is the type where there is not a connector just the insulation is removed, it can be cleaned with a pencil eraser. Do not use an ink eraser as it is too abrasive.
Check the tracks in the ribbon cable for hairline cracks. A magnifying glass helps here.
Would not hurt to clean the connector on the board. Use electronics contact cleaner or isopropyl alcohol and a tooth brush. Be gentle and do not reconnect till all the solvent evaporates.
Reconnect everything and give it a try.
If you do not own a meter, I would suggest you purchase a one. You can get a decent digital multimeter for under $20.00. You do not need fancy though it is nice if the leads are a couple feet long.
If it saves ordering one unnecessary part it has paid for itself and you end up owning a useful tool.
Most places will not let you return electrical parts so if you order it, you own it.
A couple things to watch when measuring ohms and continuity
1. Always remove power from the machine otherwise you could blow your meter.
2. Always disconnect at least one side of any device you are checking. This eliminates the possibility of measuring an alternate/parallel circuit path.
3. When checking for closed contacts and continuity use the lowest scale (Usually 200 ohms). Then try higher scales. This scale is 0 to 200 ohms so if the device you are measuring is 300 ohms this scale would show an open circuit which it is not, you are just measuring outside the scale's dynamic range.
4. When you start always short the meter leads together. This will tell you that the meter is working and if there is any 0 offset.
There is a good STICKY at the start of this forum about it's use.