"Sensor open circuit" error on Vapochill LS

[Duzter]

Hello,

I was just trying to start the Vapochill LS I'm working on.

I shortcutted the 2 power pins, and nothinh happened. I looked at the display and it said "Sensor open circuit"-"Evaporator xxx°C". The temp was bouncing up and down. from 147°C down to 14°C. Looks like a bad temp sensor, or maybe the connection somehow?

The new suction line had a temp sensor from asetek mounted as it was made.
The problem was, that the temp sensor didn't have a plug in the other end.
So I took a heater and cut off the plug and soldered it to the temp sensor wire.

What can I have done wrong? Is there a way to start the system without a temp sensor?

Like this:

[EvoCarlos]

hey do you have the temp probe plug'd in at the back of the vapo or straght in to the cc card? i found with mine the plug @ the back gave me an error so i have moved it to temp 1 on the cc
failing that i think the prob is bad

[Stewie007]

If readings are jumping around, that's gotta be a short. Sensor reports, or any kind of electrical data is nothing more than a pulse of energy. If the pulse is erratic, the data is erratic.

Thats my 2 cents.

[Duzter]

hey do you have the temp probe plug'd in at the back of the vapo or straght in to the cc card? i found with mine the plug @ the back gave me an error so i have moved it to temp 1 on the cc
failing that i think the prob is bad

I plugged it into the board at the back. Will try with it plugged in the CC board.

If readings are jumping around, that's gotta be a short. Sensor reports, or any kind of electrical data is nothing more than a pulse of energy. If the pulse is erratic, the data is erratic.

Thats my 2 cents.

Thought of that too. The resistance should be 10K ohms at 25°C as far as I can remember.


Another thing, I looked at the sensor that was on the previous evap, the wires are much smaller in diameter, than the wires on the new sensor. Could this be the reason?

[Stewie007]

If there is a short in the wire, it doesnt always have to be the plug. It could be inside the sensor itself.

If the wires were smaller it should not matter. You can always use a thicker gauge wire, you just cant use a smaller gauge wire. So the slightly thicker wire should be fine.

[SexyMF]

I read this as Duzter has a new sensor from the manufacture but when he added the plug it still did not function.
Perhaps there is a dry solder joint on the controller board where the sensor plugs in.

[Duzter]

If there is a short in the wire, it doesnt always have to be the plug. It could be inside the sensor itself.

If the wires were smaller it should not matter. You can always use a thicker gauge wire, you just cant use a smaller gauge wire. So the slightly thicker wire should be fine.

I don't hope it the sensor, should be brand new from asetek. That is also the reason why I worry about the wire diameter, maybe they have sent a wrong sensor?

I read this as Duzter has a new sensor from the manufacture but when he added the plug it still did not function.
Perhaps there is a dry solder joint on the controller board where the sensor plugs in.

Exactly. Before I started working on this Vapo, it worked fine electrically.

[Duzter]

hey do you have the temp probe plug'd in at the back of the vapo or straght in to the cc card? i found with mine the plug @ the back gave me an error so i have moved it to temp 1 on the cc
failing that i think the prob is bad

Tried it. Same response.

Can I make the Vapo run without that sensor?

[EvoCarlos]

im sure there was a thread some where in the phase section in the last couple of months ago and how to start the vapo by shorting pins in the control wires i'll post back if i find it

[EvoCarlos]

this thread
http://www.xtremesystems.org/forums/...ight=vapochill

and its this post
http://www.xtremesystems.org/forums/...3&postcount=10

[Duzter]

Great m8!

Will try and see if it works.

[Duzter]

Okay, I got it up and running with that hint.

BUT, no condenser fan or rear fan power. Any idea how I could get them up and running?

[Duzter]

When I touch the unit, it feels like there is a shortcut. Is that normal for a Vapochill?

I think not. Could that be the reason for the temp sensor error?

EDIT:
I tried to ground the unit, and now the sensor error is gone. So the unit runs as it's supposed to.
BUT, the unit is al electrical. I can see that the mains wire doesn't even have a grounding wire. Seems weird to me, since the compressor is grounded to the case. But the case isn't grounded to anything.

This is all so weird.

[SexyMF]

Well spotted. Definitely require a ground for the unit.

[Moc]

Aseteks thinks that a normal Vapo is grounded by the PC Case which sits on the vapo.
This is a good example how cracy companys get when they want to save money -.- instead of a 3 line cable just two... I guess there is not even a half Euro/Dollar difference!

[Duzter]

Aseteks thinks that a normal Vapo is grounded by the PC Case which sits on the vapo.
This is a good example how cracy companys get when they want to save money -.- instead of a 3 line cable just two... I guess there is not even a half Euro/Dollar difference!

Your probably right.

I will se if I can change the wire to a 3 line cable. Hope it will help.

Could I put a normal 3 legged power plug on the mains supply for the unit, and thereby get the power directly from the power socket and not 'through' the PSU?

[EvoCarlos]

Your probably right.

I will se if I can change the wire to a 3 line cable. Hope it will help.

Could I put a normal 3 legged power plug on the mains supply for the unit, and thereby get the power directly from the power socket and not 'through' the PSU?

hey duzter
for some reason xs takes 3 weeks to email me there has been a post update so its a bit late but
i did this with my vapo

http://www.xtremesystems.org/forums/...0&postcount=41