Water in the warm water tank without a thermostat is not circulating?

Hello, it is cyclic, but without a thermostat, the circulation system is always in a large circulation state. The water temperature itself rises slowly in winter, which causes the water to heat up slowly, the warm air is not hot, and the vehicle Waste gas. If you have a problem with your car, ask the car guru. Professional technicians from 4S stores can solve the problem in 10 minutes.