There may be many reasons for the E4 fault code of Lei Bin water heater, such as the damage of water heater temperature sensor, the failure of water heater controller, and the blockage of water pipes inside the water heater. The E4 fault code appears in the water heater. First, we should investigate, determine the cause of the fault, and carry out maintenance according to the situation.
If the temperature sensor is damaged, the water heater needs to be removed and replaced. If there is something wrong with the controller, you can reset it first. If the problem cannot be solved, a brand-new controller needs to be replaced. If the problem is caused by water pipe blockage, you can use professional cleaning tools to clean it.
In a word, the E4 fault code of Lei Bin water heater is a common fault type, which needs to be checked and maintained in time to ensure the normal use of the water heater. In daily use, we should also pay attention to the maintenance of water heaters, and carry out regular cleaning and maintenance to avoid failures and prolong the service life of water heaters.