i will check that, but there should not be any reason for it to get warm. it's a 12amp esc. this happened when i was flying the 2208/34, 3c 720 with the 10x4.7 prop.
i think it was to big a prop for that motor, battery, esc combo. when i changed the prop to 9x3.7 the problem stopped.
i think the 8x4 is the recommended prop for the 2204, 2c battery combo?