okay great got it, F24
WATER TEMPERATURE SENSOR ERROR
If the water temperature sensor (NTC) value is out
of range (23°F to 217°F [-5°C to 103°C]) during the
water-heating step of the wash cycle.
NOTE: To find correct Ohm reading, refer to the
Temperature Sensor section, page 7.
1. Unplug washer or disconnect power.
2. Check the water temperature sensor and the
connection to it, and also check for condensation.
heres the values of the temperature sensor.
32°F (0°C) 35.9 kΩ 35.9 kΩ
50°F (10°C) 22.7 kΩ 22.7 kΩ
77°F (25°C) 12 kΩ 12 kΩ
86°F (30°C) 9.7 kΩ 9.7 kΩ
140°F (60°C) 3.2 kΩ 3.2 kΩ
194°F (90°C) 1.3 kΩ 1.3 kΩ
212°F (100°C) 950 Ω 950 Ω
you need to test the ohms on the sensor.
you need to replace it most likely, heres a link to the part.
http://www.repairclinic.com/PartDetail/Thermistor/8181705/906492?modelNumber=MHWE550WW00 its around $15.00, thanks Bryan