A: The continuous heating time alarm(E5) cannot be turned off.
It is designed to remind the customers that the water can not be heated to the target temperature, the heater may be faulty and poses a threat to fishes.
For example: Set T1=76, T2=81, CT=3
1.If the current temperature is equal to or lower than 76 degrees, the ITC-306A will turn on the power of the socket. If the heater does not heat the water to 81 degrees within 3 hours after turning on the power, ITC-306A will alarm and display E5.
2.If the current temperature is equal to or lower than 76 degrees, the ITC-306A will turn on the power of the socket. If the water temperature is heated the to 81 degrees within 1 hour after turning on the power, the countdown timer will stop. When the temperature drops to 76 degrees, it will turn on the heater again and restart the 3 hours countdown timer(CT).