Farfalla Induction Cooker FEC-20SD6 Error E6

[maxchong2898]

Dear all,

I have an induction cooker FEC-20SD6, when turned on showing error E6 which is 'internal temperature is too high' according to the user manual. I am trying to fix the problem but in vain. Hope can get some advice on how to fix it

Thanks in advance

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

Dear all,

Attached are pictures for the induction cooker. I am trying to locate temperature sensor on the PCB, but in vain. I know there is one at the center of the coil. Anyone knows which component on the PCB acts as temperature sensor?

Thanks in advance

[RJARRRPCGP]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

Probably a shorted thermal sensor. (If it's the usual sensor type used)

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

Dear RJARRRPCGP,

Thanks for reply.
That's what I suspect, but unable to find the thermal sensor on the PCB. Don't know which one is thermal sensor

[budm]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

https://www.badcaps.net/forum/attach...8&d=1411826572
What is that badly soldered jumper wire?

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

Dear budm,

Thanks for reply.

Initially, I suspected a capacitor was the problem, so I unsoldered the capacitor to do a testing on it. But it seems to be ok. Later I soldered it back and it looked like the electrical connection was damaged, so I soldered a wire across the connection

[goontron]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

i have a feeling it on the top panel, can we get a look at the back of that too.

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

Dear goontron,

Attached pls find the top panel pictures.
I still can't figure out what's wrong with the induction cooker

[goontron]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

ok, its not on the front panel. there are 3 wires going to the coil, two big ones and a small one with two or three individual conductors?

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

Dear goontron,

I got what you mean.
Attached are the pictures. The small one with 3 conductors are the temperature sensor for the coil.

There are two black wires. I measured the resistance across these wires both ways. The reading is 111.6 Kilo Ohm

[goontron]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

111k? thats definitely suspicious, seeming how most thermistors are only 10k. i think thats whats bad.

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

dear goontron,

Thanks for reply.
Yes, it is true that most temperature sensors are in 10K Ohm.
see this site for various type of thermistors:
http://www.amwei.com/views.asp?hw_id=61

How do I verify that it is the temperature sensor giving the problem, before I make a purchase?

Thanks

[goontron]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

looks like the thermistor is OK. they have 110k thermistors, they are just uncommon. if the room was ~27c when measured it is fine. which leads to bad solder or a bad IC.

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

dear goontron,

Thanks for reply.
Ok, the thermistor is ok
Anyway to identify bad solder or ic?

Thank

[maxchong2898]

Re: Farfalla Induction Cooker FEC-20SD6 Error E6

Dear all,

I have put the main board front and back side by side to make it easier to check the connection. I also tried to start with the IC LM339N to see if what input that has triggered the error E6

Is this the right way?

Thanks