I have a side by side Whirlpool model number ED5RHGXMQ00 and it is constantly running but the freezer will only get to 15F. Any advice would be appreciated.
Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=ED5RHGXMQ00
See the attachment for the tech sheet
Check that the evaporator (freezer) fan is running.
If not then that may be your problem.
Check the voltage across the fan.
If you have 120 volts, then replace the fan.
If the fan is OK.
Remove the evaporator cover in the freezer so you can see the coils.
Do not let them de-ice.
If they are heavily iced/frosted over then you have a defrost problem.
Manually force a defrost cycle, see the tech sheet. When the fans and compressor turn off, you are in defrost.
Now check the defrost heater to see if it is on.
Be careful you do not want to burn your fingers.
If the heater is on then the defrost board needs replacing.
If not on.
Unplug the unit.
Remove the wire for one side of the heating element from the wiring and measure it for continuity, usually around 20 ohms or so.
If the heater is OK
Remove one wire to the defrost thermostat (clipped onto the evaporator coils) and measure it, should be 0 ohms when frozen. Note that it opens just above freezing so must be frozen to check it. Also inspect it, if it is bulged at all replace it even if it measures OK.
If both the above are OK then odds are the defrost board is toast.
If you only have frost in one area (usually where the freon enters the coils) then you probably have a sealed system problem.
This will be an expensive repair as you need a pro, often it makes more sense to put the dollars towards a new unit.
Be sure that the compressor has run for a couple hours because if you do this shortly after/during a defrost cycle yo could come to the wrong conclusion.