Communication control method of water heater

The invention provides a communication control method of a water heater. The communication control method comprises the steps that S101, the water heater sends communication signals to a plurality of remote controllers at first signal power every first preset time; s102, after the first remote controller replies the communication signal of the water heater, communication is established between the water heater and the first remote controller; s103, the communication signal strength between the water heater and the first remote controller is adjusted; s104, the water heater transmits a communication signal to the first remote controller at the adjusted communication signal strength every second preset time, and the second preset time is shorter than the first preset time; step S105, detecting whether the first remote controller enters a dormant state or not; if yes, entering the step S106; if not, returning to the step S104; and S106, communication between the water heater and the remote controller is stopped.