วิธีซ่อมเตาแม่เหล็กไฟฟ้า 3 INDUCTION COOKER REPAIR 3

ขอบคุณ ครับได้ทั้งความรู้งานซ่อม และได้บุญครับ แถมได้ไอเดียใหม่ๆใช้ยาทาเล็บใช้กับพื้นที่บางจุดที่เล็กๆ ถ้าpcb ทั้งแผ่นผมใช้สเปร์แลคเกอร์พ่นอยู่ครับ

เต่าแม่เหล็กไฟฟ้ายังไม่ถึงจุดเดือดก็ตัดแล้วขึ้นE6…หมายความว่าละบายความร้อนไม่ได้

Prestige, Pigeon, Butterfly, TCL, I-bell, Electrolux, Sunflame, Glen, Inalsa, Padmini, Softel, Singer, Usha, Khaitan, Wipro, Faber, Maharaja induction cooker error codes (Applicable for Chinese brands too)

E0 –Cooking vessel is not placed correctly. Vessel is either removed or not made of a material usable with induction cooker

E1 – Some issue with internal circuitry of cooker. Try switching off the cooker and switch it On after some time.

E2 – Temperature sensor error. Circuit is open or closed. It means the system cannot read correct temperature of working and results in switching OFF of the cooker. Replace the temperature sensor if the error persists. Costs about 150 Rs.

E3 – Supply Voltage is high. Reduce voltage if the cooker is connected to a stabiliser. Or switch the cooker off and then turn ON after some time.

E4 – Supply voltage is low. Increase voltage from stabiliser if you are using one. Or else wait for a few minutes till the voltage increases.

E5 – Surface temperature of cooker is too high. Don’t let hot water or vessels rest in cooker top after cooking. Remove any vessel and let the cooker cool down for a few minutes.

E6 – Circuit temperature is high. Internal circuitry is too hot to work. Wait for a few minutes to let it cool down. It may also be a result of malfunctioning fan, which fails in cooling down the internal circuit and device. Blocked air vent also causes this error. Remove any blockage and let the device cool for some time. If the problem persists, call for service.

E7 – Internal temperature sensor is not working properly. You should have to consult a local electronic repair workshop to get it cleared.

E8 – Non usable pot placed in cook top. Use some vessel with magnetic properties.

Whirlpool Error codes

C1 – Low input voltage. Increase voltage with stabiliser or wait for some time.

 
C2 / C3 – Over heat in device or the surface. Wait a few minutes to let it cool down. If problem persists, you may have to consult repair for replacing temperature sensor.

F0 – Some internal error is there. Wait for some time to see whether it is solved by itself. Or else, call customer care.

F2 –  Too hot cooking area. Wait for some time after removing any vessels and try again.

F4 –  Place the vessel towards the centre of cooking plate and not near the control panel (switch board).

F8 – Long time in cooking. Your cooker needs some cooling and so, shut it down for a few minutes.

Morphy Richards, Redfyre, Frigidaire, Spring USA Buffet and many other cooker shows similar error codes. For model specific error code meaning and explanation, please comment through comment column below. Hope this post was useful and informative

ให้วัด..ความถี่ ที่ เขียนว่า PWM กับ PAN นะครับ….ถ้าไม่มี Oscilloscope ก็ใช้มิเตอร์ แบบ เข็ม ธรรมดา ตั้ง Scale 10 Vac ย้ายสายแดง ไปที่ Out Put ครับ..ขั้นต่อไปหลังจากซ่อมเสร็จแล้ว…ตอนทดลองใช้งาน..ให้ใช้สายมิเตอร์ ทำเป็น ขดลวด..วนรอบ ภาชนะที่ทดลองการทำงาน สามรอบ ตติยัมปิ..ถ้าเครื่องทำงาน เข็ม มิเตอร์ จะขึ้นครับ.วงจรครับ https://www.youtube.com/watch?v=z7d1PlJ6Kwk

เป็นช่างที่ละเอียด รอบครอบ น่าชื่นชมครับ

ส่วนมากอะไรพังครับ igbt ป่าว

/* Code for thermal controller
Turn on relay to turn on heat element, off for off.
> LED on relay shows relay commanded state and that transistor is working

AD595 with Type K thermocouple
LCD screen for visual feedback. (not added yet)
LED on D13 for status, attention getter? "Go read the screen"
3 buttons for user input – only Start implemented so far
CP2102 module to Rx/Tx for code download, or feedback to PC for future datalogging
*/
// define IO used
byte button0 = 2; // low = on Start/Select
byte button1 = 3; // low = on Temp Up
byte button2 = 4; // low = on Temp Down
byte LCDpins[8] = {
5, 6, 7, 8, 9, 10, 11, 12}; // array of data pins, 5 = LSB, 12 = MSB
byte statusLED = 13; // high = on
byte LCD_E = 14;
byte LCD_RW = 15;
byte LCD_RS = 16;
byte relay = 17; // high = on
byte free18 = 18;
byte temperaturePin = A3; // AD595 output
// define variables
int AD595output; // mV, from 0.003 to 3.022
// resulting ADC reading are from 1 to 618
// correlation: ADCreading/2 = tempC below readings <160
// correlation: (ADCreading/2)-5 =tempC for reading >=160
// define the the stages to go thru:
int temperature;
byte thermalStage = 0; // state machine variables
byte ovenoff = 0;
byte preheatRamp = 1;
byte preheat = 2;
byte preflowRamp=3;
byte reflow=4;
byte cooldown = 5;
byte running = 0;
// time variables
unsigned long preheatRampStartTime; // display times, not added yet
unsigned long lastTempTime;
unsigned long preheatStartTime;
unsigned long preheatDuration = 60000; // make longer, up to 120 seconds
unsigned long reflowStartTime;
unsigned long reflowDuration = 30000;

void setup(){
pinMode (button0, INPUT); // input with internal pullup enabled
digitalWrite (button0, HIGH);
pinMode (button1, INPUT); // input with internal pullup enabled
digitalWrite (button1, HIGH);
pinMode (button2, INPUT); // input with internal pullup enabled
digitalWrite (button2, HIGH);

for (byte x = 0; x<8; x=x+1){
pinMode (LCDpins[x], OUTPUT); // LCD data pins as outputs
}
pinMode (statusLED, OUTPUT);
pinMode (LCD_E, OUTPUT); // set hi or low to start?
pinMode (LCD_RW, OUTPUT); // set hi or low to start?
pinMode (LCD_RS, OUTPUT); // set hi or low to start?
pinMode (relay, OUTPUT); // leave low to start
pinMode (free18, INPUT); // input with pullup for now – turn into door open test?
digitalWrite (free18, HIGH);

Serial.begin(9600); // serial output for debugging

AD595output = analogRead (temperaturePin);
if (AD595output<160){
temperature = AD595output>>1; // divide by 2
}
else {
temperature = (AD595output>>1)-5; // divide by 2, subtract 5
}
Serial.print ("Start Temperature = ");
Serial.println (temperature);
} // end setup

void loop(){
/* start with running predetermined profile
Go from Room Temp to Preheat, 150-180C
Hold Preheat for 30-60 seconds
Go to Liquid/Flow temperature, 210-225C.. DO NOT EXCEED 255
Hold Liquid/Flow temperature 30 seconds
Ramp down
*/
// not running, not started, show ambient temp
if (running == 0 && digitalRead (button0 == 1)){
AD595output = analogRead (temperaturePin);
if (AD595output<160){
temperature = AD595output>>1;
} // divide by 2
else {
temperature = (AD595output>>1)-5;
} // divide by 2, subtract 5
if ( (millis() – lastTempTime) >=500){
lastTempTime = millis();
Serial.print ("static temperature = ");
Serial.print (temperature);
}
}
// startup if Not running & Start button is pushed
if (running == 0 && digitalRead(button0) == 0){
preheatRampStartTime = preheatRampStartTime + 500;
thermalStage = preheatRamp;
running = 1;
digitalWrite (statusLED, HIGH);
Serial.println ("preheat Ramp starting ");
}
if (running == 1){
// record the temperature
AD595output = analogRead (temperaturePin);
if (AD595output<160){
temperature = AD595output>>1;
} // divide by 2
else {
temperature = (AD595output>>1)-5;
} // divide by 2, subtract 5
if ( (millis() – lastTempTime) >=500){
lastTempTime = lastTempTime+500;
Serial.print ("loop temperature = ");
Serial.print (temperature);
}
}
// ******************************
switch(thermalStage){
/*
thermalStage's:
ovenoff = 0;
preheatRamp = 1;
preheat = 2;
preflowRamp=3;
reflow=4;
cooldown = 5;
*/
case 0: //ovenoff:
digitalWrite (relay, 0);
break;
// ******************************
case 1: // preheatRamp:
if (temperature <=145){
// keep ramping up
digitalWrite (relay, 1);
}
if (temperature >145 && temperature <170){
preheatStartTime = millis();
preheatRampStartTime = preheatStartTime;
Serial.println("preheat starting ");
thermalStage = preheat;
digitalWrite (relay, 0); // let next stage turn on if needed
break;
// ******************************
case 2: // preheat:
if (millis() – preheatStartTime <=preheatDuration){
if (temperature <170){
digitalWrite (relay, 1);
}
else {
digitalWrite (relay, 0);
}
}
else {
thermalStage = preflowRamp;
digitalWrite (relay, 1); // ramping up!
Serial.println("preflow rampup starting ");
}
break;
// ******************************
case 3: // preflowRamp:
if (temperature <=200){
// keep ramping up
digitalWrite (relay, 1); // ramping up!
}
if (temperature >200 && temperature <220){
reflowStartTime = millis();
thermalStage = reflow;
digitalWrite (relay, 0); // let next stage turn on if needed
Serial.println("Reflow starting ");
}
break;
// ******************************
case 4: // reflow:
if (millis() – reflowStartTime <=reflowDuration){
if (temperature <220){
digitalWrite (relay, 1);
}
else {
digitalWrite (relay, 0);
}
}
else {
thermalStage = cooldown;
digitalWrite (relay, 0); // cooling down!
Serial.println("cooldown starting ");
}
break;
// ******************************
case 5: // cooldown:
digitalWrite (relay, 0);
if (temperature <180){
Serial.println ("Safe to open door – Caution! HOT!");
thermalStage = ovenoff;
running = 0;
digitalWrite (statusLED, LOW);
}
break;
} // end switch thermalstage
} // end if running
} // end void loop