Neither dispensor or icemaker works after replacing water lines

Could be the water valve it should be a double soleniod, one for the icemaker the other for the water dispensor. Have someone push the dispensor button while you listen at the back of the fridge. It should be located at the bottom right corner, even if youcan hear it, it may not be opening. You can remove the plastic line that goes to that side of the valve and have someone press the button again to see if any water comes out. If it does you may not have pressed and held the button long enough to fill the resevoir that is located inside the freshfood compartment.

did you connect dual valve correctly if not icemaker could be filling when you try to get water out of dispensor also a way to check if your dispensor paddle and switch test ..... otherwise possible plugged water filter or bypass cap not installed in filter head... is water supply on to water valve

dont j=know what model you have . but if its samsung rs21 the water bottle will probaly be frozen due to deforst element failure

check this link out
samsung fridge freezer problems

The water tube to the icemaker inside the refrig maybe frozen up. Thaw out with your hair dryer. To make sure the tube is clear. Shut of the water to the refrig, disconnect the inlet water line to the icemaker. Insert a flexable through the connector fitting, I used a zip tie. The flexable item should go all the way to the icemaker

Solution #2 Replace the "water inlet valve" at bottom back right of refrig. Easy To Do.

Hi,
This work is recommended to be done by a technician only.
Check for the seal, and the supply line which might require to be fitted again:
http://www.acmehowto.com/howto/appliance/icemaker/check/supplylineinspect.php
Check for water line installation:
http://www.applianceaid.com/waterline-instal.html
http://www.ehow.com/how_5665213_troubleshoot-maytag-refrigerator-ice-maker.html
Please let me know if you need more help.

The line inside the freezer door is frozen . Turn the temp in the freezer , to warmer for a few days , and it should thaw . A dispensor heater is available , pt # WR49X10173 . Instructions come with the part .

Try swapping the wires on the dual water inlet valve. Then try the water dispenser. The water should go to the ice maker. This will tell you weather or not the ice maker valve is working and if the line is clear.

The water inlet valve on the back of unit opens when the ice maker needs water. If the valve doesn't seal good because of sediment or wear it will continue to drip and when the water reaches the ice maker supply tube it will freeze. You can take the water line off the valve and watch to see if it drips.

Pour about 2/3 cup of water into ice maker . If it freezes and dumps , replace the water valve . If it does not dump , replace the icemaker . Also make sure the coils are clean beneath refrig , and the clear fill tube , which fills the icemaker , is clear of ice (not frozen up ).

Is your supply line plastic or copper? If its plastic then that can absorb a smell. There is nothing in the icemaker that would make it smell. You may need to replace the supply line and the inlet line that feeds the icemaker. Is there a smell in the kitchen faucett?

Since you have water getting to the icemaker/dispenser, the most common problem I've seen is the solenoid valve is history and needs replacing. It could also be the switch that is normally activated by the dispenser itself and in turn activates the solenoid valve or the wiring in-between the switch and valve, but I have personally not seen either one of those go bad.