What are the causes and solutions for the insufficient heating in the Sagitar?

[VonTheo]

The reasons for insufficient heating in the Sagitar are: 1. Clogged heater core; 2. Insufficient coolant in the cooling system. The solutions for insufficient heating in the Sagitar are: 1. Replenish the coolant; 2. Replace the water pump impeller. The working principle of the car's air conditioning heating system is: When the engine's water temperature becomes too high, the refrigerant gas enters the condenser, where the pressure and temperature decrease, causing the refrigerant gas to condense into a liquid and release heat. Taking the 2018 Sagitar as an example, it belongs to the compact car category, with body dimensions of: length 4753mm, width 1800mm, height 1462mm, a wheelbase of 2731mm, and a fuel tank capacity of 50 liters.