Tunze Osmolator 3155 Problem

[greg683x]

So Ive had this unit since 2012 and it's worked really well, aside from having to replace the pump once or twice.

Just the other day I noticed my sump water level was really low and the red alarm lights were on my controller. I figured the pump was bad so I ordered another one, I get the new pump and hook it up......no dice. I hook both pumps up to the 12v battery and they both work great.

Next I break out a multimeter and I check the voltage that the unit is putting when when the pump is called for and Im getting 11v. Strange, it should work. So I hook the pump back up to the controller turn it back on, still nothing, so then I check the voltage the unit is putting out with the pump hooked up and power is lost as soon as the pump is hooked up. Almost like some kind of overload is kicked. Everything else is working correctly, all the lights, sensors, everything, but the thing just wont operate the pump.


Anyone ever heard of this before?? Really hoping Im not gonna have to drop another $200 on a unit Ive only had a few years.

 

[rvitko]

I replied to your email-

If the pump is good the likely causes are either a bad relay (usually a cold solder joint) or a break in the wires to the pump.

With the more detailed description, a faulty PTC which serves as a circuit breaker or corroded wiring or a bad pump which may work but needs more than 1200mA to do so are also possibilities. A wrong power supply for example swapping a lower mA power supply for an Apex or other device could also be a cause.

 

[greg683x]

I replied to your email-

If the pump is good the likely causes are either a bad relay (usually a cold solder joint) or a break in the wires to the pump.

With the more detailed description, a faulty PTC which serves as a circuit breaker or corroded wiring or a bad pump which may work but needs more than 1200mA to do so are also possibilities. A wrong power supply for example swapping a lower mA power supply for an Apex or other device could also be a cause.

still using the original Tunze power supply. I mailed you everything today, everything except the power supply actually, but i assumed you had one of those lying around for testing. FWIW I was able to power the pump with the power supply itself (connecting the leads of the pump to the jack itself). Anyways, it's headed to you now, so you'll be able to see for yourself. thanks for the help.

 

[rvitko]

I should be able to figure it out without the power supply, the power supply can supply 1600mA and the controller kills the pump at 1200mA, this really would only tell us the power supply is very likely good.