Washer leaks under the machine

Chances are it's the 6 inch or so rubber "U" tube you see attached from the diverter valve to the pump. The end that goes to the pump has to slip under the metal housing and turn it about a half an inch, then use the clamps to secure it.

If your line is not frozen and cracked then it's the water control on the back of your washer where your main water hoses screw into the washer. Check this water control because it is plastic.

Insulation only slows down the transfer of heat (cold), it does not stop it. If it is below freezing and the water in any pipe is not moving, it will eventually freeze. Most major industrial supply houses like McMaster-Carr or Grainger in the US, carry pipe tracing tape. It comes in various lengths and you secure it to the pipe under the insulation, plug it in and many types have integral thermostats that keep the pipe above freezing. If you have a washing machine, you will have to consider the lines to the washer valves, both hot & cold and any other areas in the washer that may hold water like the pump and the discharge hoses.
Was this washer always outdoors?

The freezing messed up the fill valve. This is the part that your hoses connect to on the back of the washer. Replace it and you will be fine.

water freezes. sounds like first your fill pipes were froze then the pump froze. if you can find a place inside the house for washer or you may have to build a room around washer and dryer and heat it

Sounds like either the gasket on the inlet is leaking or not tight or the solenoid housing is cracked causing the leak. When its in use the pressure from the line is realased when the solenoid is opened letting water in. When not in use the solenoid stays closed allowing pressure from the line to build causing the gasket to leak. Check your gaskets, and solenoid housing for leaks and then check to make sure your water pressure is not set too high.

Joe

The problem is most likely the water pump and supply hoses.
If your system froze up where the washer was located then it is possible that the pump or supply lines also froze because they always have water in them.
The repair price will vary with whoever you call to fix it.

there are 2 possible causes.
either
inlet valve leaking - turn water off and if water fill stops, it indicates valve leaking
valve being powered when machine off. this is very unlikely but to check, disconnect washer and see if problem stops
also, if drain is plumbed into a spigot on the sink trap, every time you empty the sink, some of the water will flow into the machine. to cure this, take the drain hose as high as possible under the sink in a swan neck

sounds like two seperate problems. firsst water running from under your machine might be a bad seal, or water could be backing up the drain line. i would guess that it is a plumbing problem because of theissue with water in the sink. have a plumber snake out the drain lines and the problem with the washer should disappear.

The pump is easy to replace:
#1 Use a shop vac and pull all the water out of the drain line. This will keep you from having to clean up about 1 gallon of water off of the floor.
#2 Lift the front of the machine enough for you to get under and see.the pump just inside the front of the washer.
#3 Lift the 2 retaining clips off of the pump. This will allow you to pull the pump off of the motor.
#4 Remove the 2 clamps off of the hoses.
#5 Install the new pump into the hoses, and reinstall the clamps.
#6 With the retaining clips installed into the motor housing, install the pump.
#7 Attach the retaining clips, and set the washer back on the ground.

You have now replaced the washer pump.

If you have any questions, let me know