E1 A reset has occurred because the voltage has fallen below
volts
E2 Invalid day temperature (must be 65-110 degrees)
E3 Invalid night temperature (must be 65-110 degrees)
E4 System is having problems communicating with probe and shut
off power to heaters while displaying EE instead of
temperature
E5 Same as E4
E6 Denotes probe temperature has exceeded its working range of
32-130 degrees. CC displayed for below 32 and HH displayed
for above 130.
E7 Same as E6
E8 System cannot detect the voltage properly.
May wish to call Helix directly at 760-726-4464
Hope this helps.