I have a Hot Water Heater about 50-55 gals. thats giving me trouble. Everymorning for the past 3days I noticed no hotwater. I go down into my basement to check on the H.W. Heater and noticed a (Red) light flashing on the control box. I reset the heater by fliping the switch on the the control box. This normally does the trick but now the light comes on more frequently. Can anyone tell me what could be causing the promblem? Do I need the get another H.W. Heater? My unit is only 5 years old.

Thanks
Derrick