No.100 Minzu Avenue and No.88 Xinyang Road in Nanning teach you how to deal with the water heater failure quickly. 1. Check whether the switch of the hot water valve is turned on. 2. Check whether the hot water valve is out of order. 3. Check the water supply of the water inlet. 4. Check whether the nozzle is blocked. 5. Check whether there is water leakage in each pipeline. 6. Check whether there is a problem with the mixing valve.