MDB421RHS1 Frigidaire Dishwasher - Instructions

I removed the old spray arm by pulling it off of the base then I pushed the new one on and made sure it was on properly then I pit the base back into the dishwasher and it was good as new!

Make sure power is off. Remove metal toe kick with fillips screw driver. Reach under dishwasher with 1/2" open
end wrench and completly unscrew brass nuts from element ends. Then open door and pull element ends straight up. Note: As you pull element ends up (inside washer) you are also forcing the element end wire connectors to come off underneath. The electricial connectors are very hard to get off any other way.

Wendell Hensley
Madiso0nville, Tn

I had to remove the dishwasher from under the counter. I then had to unscrew (from the bottom) the bolts that held the heater in place. After that I ran into a problem of disconnecting the wires that ran to the heater. I did not want to "force" the wires off and I was unsure how exactly to remove them. I figured out that they are really hard to pull off but there are no clips holding them on, so you won't break anything off. Once I got the wires off, I was able to screw the nuts onto the new heater and put it back into place.

All I had to do was take out old racks and replace with new ones. However the top rack did require taking off the part where the water runs through, it was easy though.

I would like to comment on how quickly and efficiently the parts arrived. I placed my order on a monday morning and am pleased to report by tuesday afternoon they arrived, much to my delight.

Place spray arm into receptacle. Take nut and screw on being careful not to over tighten. This will strip the spray arm and the same problem will occur. Easy fix!

The Parts finder was the big help. After that all that was needed was to loosen the clamps and replace the old hose with the new one A piece of cake. Slide the washer back into place and replace the screws that hold it to the counter. Out and back in, 30min. top end to complet the job

Water had been dripping for quite some time causing the floor boards to warp and buckle causing the door to no longer align. Water drip could be seen coming from the motor area. Ordered the O rings and replaced. Get Motor & Pump schematic Pub to visualize how parts fit together. I recommend getting motor (~$90)which comes with O rings (~$50 for O rings alone) because, as it turns out, the leak was in motor. I will post repair process in separate posting.

First I disconnected the dishwasher, then I disconnected the drain hose. I pulled the machine from under the counter and turned it on its side, so that I could see where the drain pump was. I removed the two screws that hold the element in place. I then pulled the pump out and disconnected the two wires. I took a good look where each wire was attached. I also had to disconnect the pump from two small hoses. I installed the new pump, I had ordered from PartSelect, following the reverse procedure. I reconnected the dishwasher and slided back under the counter. I confess I didn't believe it would work. I was prepared for failure. The machine started, then when the cycle changed, I heard the water draining into the waist pipe under the sink. New hot water filled the machine. Would this water be drained out and at the end, after the rinsing cycle, would the dishwasher be empty and completely free of water? I waited for the end of the rinsing, then I opened the door and checked for any water left at the bottom. Suddenly a feeling of joy and pride went through me. All water had been drained out by the new pump. I had repaired my dishwasher. I didn't have to throw this handsome and well made machine into the street. My kitchen sink was no longer full of glasses and dishes. I was washing all I had accumulated during the week. My kitchen became clean and organized just like before. At this point I took an oath: when my dishwasher would break down next time, I would repair it , even if its motor, the most expensive part, had to be replaced. I was going to do it with the help of the experts at PartSelect. Thanks guys for your help and for inspiring confidence in myself. I DID IT! What a great feeling!
Now I understand the feeling a doctor must experience when he brings back to life a dying patient.

Grab the tab on the support and rotate 1/4 turn counter-clockwise to unlock it, then lift it off. The lower spray arm simply pops off the support by spreading two tabs underneath.

Align the opening in the lower spray arm support with the outlet post in the bottom and rotate 1/4 turn clockwise to lock.

*Note: direction to remove the filter basket differed from the manual. Visually line up the notches and do not twist too far when locking or you WILL break the retainer tabs.

Simply center the lower spray arm over the support and press down until it locks into place.

Our dishwasher sat in a warehouse for a year after our move from CA to TX. When I finally installed it, there was some sort of white mineral deposit that had built up on the heater element. I didn't notice it back in CA. I tried to get as much as possible off but it kept building. So I purchased a new heater element. It's been in for a few weeks and my wife thinks the build up is happening again.
To Repair;
Unscrew the dishwasher from the counter. They'll be one or two screws attaching the dishwasher on the underside of the counter.
Pull the washer out carefully.
Remove any dishes and the bottom rack.
Tilt washer on it's side.
Remove wire connections to heater element (They slide right off but make sure to remember which one goes where)
Unscrew the nuts that are holding the element on. I used some pliers. It wasn't difficult.
Remove old element and replace with new.
Reverse order.

Remove 3 screws from stem assembly. Swapped the old for the new, replace screws. Installed and lock lower wash wand. Fixed in 5 min. Great service and prices. My wife thanks you. (Had to hand wash dishes for a few days) thanks

Removed the bottom covering on dishwasher and then ran it to figure out where the leak was coming from. Noticed it was dripping off hose, but not actually leaking from hose.

Unplugged dishwasher and slid it out from cabinet area (be sure to turn off and disconnect water supply)

Followed delivery tube up side of dishwasher to top of tub and noticed reminents of where water ran down side of tub.

Loosened delivery tube by plastic nut inside of tube and removed. Noticed gasket was partially depleted.

Ordered new gasket, replaced and put everything back together. (Be sure to use teflon tape on water source fitting and tighten firmly). No leaks

remove vanity panel
disconnect copper supply line from valve
remove valve mounting screws
rotate valve to access hose clamp
loosen clamp and slide up rubber tubing about 2 inches
pull hose off barbed fitting and remove old valve
reverse order with new valve

Unplugged dishwasher, removed the 2 wires clipped to the heating element, removed both cracked nuts, replaced with new nuts from PartSelect, clipped on wires, plugged in and did a test cycle. Based upon service quote from Best Buy, I saved myself $125.00 for just the call out, not including parts and labor.

I took the bottom parts out. This can basically be done without tools. You need a phillips to unscrew 3 screws to remove the stem. Then easily replace with the new one. Putting the spiny washing part was kinda weird because I was afraid to break the nubs off again. I took the whole bottom carriage out so I could see better, pushed down kinda hard and twisted the right way (figure out which way needs to be twisted before hand by looking through the bottom of the stem).