We would recommend trying the following:
1) First thing to check would be to make sure that the correct program has been selected.
2) Check to see if the connection under the kick plate is not loose. There could be air in the system, to resolve this you will need to run water through the system to force the air bubble out.
3) Finally, in some instances the water pipe may have frozen. If this has happened an engineer would need to look at the unit but this would be a last resort after all the above has been checked