Code 49 is signalling a fault with cold water inlet valve. Turn power off at wall. Remove screws & open panel. Look for the two inlet valves on left hand side of main control box inside panel. They will each have two wires. Make sure that wires are plugged into the valve properly. Even pays to disconnect the wires & reconnect them to make sure. They may of become dislodged during the shift. If that doesn't cure it then either the cold valve is faulty or there is a fault in the main controller box.
Lincoln Appliance NZ, March 2009