PTC air heater technical solution
NF HEV PTC Air Heating is suitable for hybrid battery vehicles and is mainly used as the main heat source for temperature regulation in the car. The heating effect of the product is faster than that of the internal combustion engine. During the heating process, the electrical energy is effectively converted into heat energy by the PTC component.
PTC air heater technical solution
(1) Off Mode
Vbat enters this mode after power off. The system is not powered on and does not work. All PTCs are turned off.
(2) Initializing Mode
Vbat enters this mode after power-on or reset, and automatically exits this mode after system registers, variables, and status are initialized.
(3) SelfCheck Mode
Enter the mode after the initialization is completed. The signal part self-test is completed in 2S, and the power part self-test will be completed in 6S after the power is turned on and the power output command is received.
(4) Work Mode
It is in this mode when the self-test is completed and the communication is normal. The system outputs power to drive according to the control command.
(5) Diagnostic Mode
Diagnose components and operating status during normal work and failure, and determine the system's switch between Work and Error modes.
(6) Shut Mode
When communication is lost, enter this mode, PTC is off.
(7) Error Mode
When a fault is detected, this mode is entered and the PTC is turned off. After non-fatal fault recovery, you can enter Work mode again. Fatal faults need to be powered on to recover.
