EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

[R_J]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

The replacement should be C106MG, available from digikey C106MGOS-ND

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Where did you buy the “ C106M “ part can you please post a link to it

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Happy New Year

Latest update:
I have replaced the C106M, and it does not have the same "click-on-click-off" sound every 5 seconds anymore. And the incandescent bulb connected in series does not light up on starting up with the load. But then again, it actually does nothing...

Meaning, it reading 250Vdc across the 2 output pins without load, and read 0Vdc when connected the solenoid... When connected to the incandescent bulb or the DC motor, nothing happen...

So, I ran out of idea what else to do with it, and decided to give it up... I salvaged some parts are spares, and discarded the chiller..

Thank you Sam_sam_sam for working with me all along, have a great 20201!

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

I have a feeling that this might have been the case

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

I am powering up the solenoid directly for the test, so bc337 is not in scope.

I am thinking the inrush device cut off the power supply when too much current is drawn.. But I will replace it to see what happen.

So I replaced the PTC with a similar device extracted near incoming live input from another power board. Powered up and immediately a tiny spark is seen, and nothing else happened. Restored the original PTC, does not work already..

On quick check - the C106M appeared faulty. Pulled this out of circuit - Gate is shorted to Anode and Gate is opened to Cathode. With DMM black probe on Cathode, red probe on Anode, then "shorting" the gate with red probe, nothing happened. So I believe this SCR is already fried..

Could this SCR been faulty in the first place ??

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

I am powering up the solenoid directly for the test, so bc337 is not in scope.

I am thinking the inrush device cut off the power supply when too much current is drawn.. But I will replace it to see what happen.

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Like had above I am being to think that the bc337 is bad or the inrush device is bad or both of them together

Because it starts off pulling current but then there is no current being pulled

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

*** Merry Christmas everyone ***

I was ignorant about incandescent light bulb, thinking it only works with AC voltage in my previous post. I retested connecting the output to a 100W incandescent bulb. There is no light at all and I think it's because it only lit for a split second then stopped for 5 seconds, and the bulb has not time to heat up..

To confirm the short-circuit in the solenoid PCB, I connect the 100W incandescent bulb in series with the incoming Live cable. The bulb flickered for first 1-2 seconds, then off. I believe this is due to a short circuit when the varistor heated up opened, and took few seconds to cool and opened again due to the short circuit.

See this video: https://flic.kr/p/2kkh6yg

* the clicking sound is from the solenoid plunger.

But I just don't understand the circuit to trace the short..

[petehall347]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

if you use bc337 be aware the pin out is reversed from the 2sc1815

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Do you have a spare bc337 to if this part might be bad

No, I don't have this part yet but will go buy some later.

I am focusing on the solenoid PCB to determine if this is good or bad. I found someone's description of this solenoid, SDF0.8 3/2:
----------
Product Type Description SDF ---- pulsed electromagnetic valve code

0.8 ---- solenoid valve diameters: 0.8mm

3/2 ---- Feature code: Indicates a two state, three connecting pipe

Power supply voltage: 220V

Frequency: 50 / 60Hz

Rated operating voltage: 165 ~ 253V

Insulation resistance: 500M

Electrical strength: 1500V, 50HZ sinusoidal AC 1min

(From the state of the solenoid valve air 400mm) Noise: 55dB (A)

Solenoid valve control power: solenoid valve driver needs at least four sinusoidal 50 / 60Hz positive or negative half-wave pulse (drive pulse waveform of FIG. See in particular), a state of the switch into another state of the time interval is not less than 30s.
----------

I don't understand this solenoid PCB and not able to trace the current flow. I have replaced the 2 capacitors, and checked the C106M SCR off-circuit. Still getting the same result..

I finally managed to get my video posted online: https://www.flickr.com/photos/145334.../shares/3689ME

From this video, you can see that when the solenoid first powered up, the 280Vdc motor spin briefly for 1 second or so, then gone into start-stop repeatedly.

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Do you have a spare bc337 to if this part might be bad

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Test this board with an in-condensed light bulb 100 watt because the issue might be the solenoid but we to know for sure which one is the real problem

I think you meant incandescent (not in-condensed) light bulb. Yes, I have done that not it's not lighting up at all, see post #29.

I suspect there is a short circuit somewhere and the PTC is shut off due to overcurrent. And this the repeating itself when it cooled and enabled every 5 seconds. Possible?

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Test this board with an in-condensed light bulb 100 watt because the issue might be the solenoid but we to know for sure which one is the real problem

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Update:
I have replaced the 2 capacitors, tested but same outcome - clicked on/off every 5 seconds. In fact in inserted my DMM on the 2 output connectors during the tests, and the reading is 0Vdc for about 5 seconds, then sudden jumped to 7-25Vdc then back to 0. This is co-inside with the 5 seconds internal between clicking on/off cycle.

It is possible that the circuit if cut off if this PTC is overheated and reconnected after cooling for 5 seconds?

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

The other capacitor is a 50V 1uF, see attached pic on how they are mounted. And yes, I found a 50V 1uF and a 450V 10uF capacitors from some power PCBs. Will find time to replace them and test it later.

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Do you have any capacitor from a switching power supply that might have a capacitor that is close to this value what is the value of the other capacitor and where do the pins of that capacitor goes to

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Under zero load, the output is ~280Vdc. So the 100W AC incandescent bulb won't lit...

I happened to have a 220Vdc motor around, connected it the the output. It spin for a split second, then gone into a start-stop-start-stop every second or so... I measured the voltage under this load, and it reads zero, then ~2-3Vdc, then repeat this as the motor in start-stop start-stop state.

There is a 400v 10uF capacitor - could this be the issue if it is bad not charging or not holding charge? It measured good in circuit ~10uF, but I don't have an ESR meter to confirm if truly good.

Worthwhile to replace this to see if it work?

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

Put a couple of 100 watt or a 200 watt bulb on the output of this board and see if it can handle this load with out switching on and off if can and it does not cycle on and off

Then I would conclude that the solenoid coil has some issues

[beetle1303]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

I have checked most of the components, and nothing seems obviously faulty.. So I wired the relay to a 12Vdc supply, and the solenoid PCB with external 240Vac. The output is stable 280+ Vdc.

I then put this setup onto the solenoid, and got the same 5 seconds click-on click off sound. I am assuming this the the sound of the plunger being energized and moved, but de-energized immediately and sprung back to original position.

But if this is the case, what makes it repeating itself every 5 seconds?? Could it the 280+ Vdc is too high causing the solenoid coil to over heat and cut-off, and re-energized after cooling down after 5 seconds??

[sam_sam_sam]

Re: EuropAce EWC 3108 Wine Chiller - Seems like no temperature sensor input

I would recommend checking the following

Diode for shorted for open

if you have a ESR capacitor tester check the capacitors

Check the transistor or mosfet or what ever the three pin device that you put the part number