RELAY OPEN TO STOP CURRENT FLOW TO COIL (DUE TO RC6 PIN OF MICROCONTROLLER)

IF DIFFERENCE

GREATER THAN 2 C?

MEASURE TEMPERATURE DIFFERENCE

MEASURE METAL TEMPERATURE FROM RA0 PIN AND MEASURE ROOM TEMPERATURE FROM RA4 PIN.

RELAY CLOSE AND CURRENT FLOW TO COIL (DUE TO RC6 PIN OF MICROCONTROLLER)

SOLENOID VALVE CLOSE (DUE TO RC7 PIN OF MICROCONTROLLER)

START

WAIT A SECOND AND TWO SOLENOIDS OPERATE FOR 2 SECONDS FOR HEAT REMOVING (DUE TO RC5 AND RC4 PIN OF MICROCONTROLLER

WAIT FOR 2 SECONDS

SOLENOID VALVE OPEN (DUE TO RC7 PIN OF MICROCONTROLLER)

MEASURE METAL TEMPERATURE FROM RA0 PIN AND MEASURE ROOM TEMPERATURE FROM RA4 PIN.

MEASURE TEMPERATURE DIFFERENCE

IF DIFFERENCE

0 C?

END

NO

YES

NO

YES

MEASURE INLET WATER TEMPERATURE FROM RA1 PIN AND MEASURE OUTLET WATER TEMPERATURE FROM RA2 PIN.

DISPLAY INLET WATER TEMPERATURE AND OUTLET WATER TEMPERATURE ON LCD DISPLAY