If there is cold air, it means there is no problem from the power supply to the heater; if there is no hot air, it means there is a problem with the heating element or the corresponding circuit connection point, such as: poor contact, rust, etc.
Analysis and solutions to common causes of heater blowing cold air
1. The heater works for too long, causing the temperature of the internal components to be too high, and the internal temperature control components are not circulated smoothly, causing The protection function will automatically switch off the power supply of the heating element, causing the heater's hot air to become cool air.
Solution: Check whether the heater vents are clear, and then go to a professional maintenance person to repair the heating element.
2. The temperature control in the heater is abnormal. The temperature control sensitivity of the heater is too high. When the heater starts to work and generate heat, the temperature control jumps and cuts off the power supply to the heating element, causing the heater to blow. It becomes a cold wind.
Solution: Go to a professional maintenance person to slightly adjust the sensitivity of the heater thermostat.
3. While the heater is blowing, the switch position is adjusted to the "cold air" position or the button is not turned to the position.
Solution: Turn the heater switch to the hot air position.
4. The heating wire is short-circuited or burned. If the heating wire is broken or burned during use, the heater will only be able to blow out cold air.
Solution: Find professional maintenance personnel to repair and replace damaged parts.