Is anyone using a Lamptron FC2 to control a DDC pump?

Drangueos

Drangueos

Drangueos

Soldato
Joined
27 Apr 2012
Posts
3,730
Location
London
Is anyone using a Lamptron FC2 to control a DDC pump?

I´m asking because I tried to control my pump and if I leave on maximum 12V it works, but if I try to lower the voltage the pump stops instantly.
I got my voltmeter to test and I notice that the 12V doesn´t drop the voltage, instead the ground voltage raises when you lower the speed.
I know if you get 12V on positive and 3V on ground.. you would get 9V at the end, so why is the pump stopping?
 
It is a normal Laing DDC with 3 pin (12V, Ground and rpm sensor)

Actually it was molex 12V and ground and a separate rpm wire, but I removed the molex connector so I could plug the pump on the 3 pin connector.
 
Last edited:
I have mine connected to a Lamptron FC5 controller, are you sure you have its wired correctly.
Mine can be adjusted from about 6v upwards, anything less and it stops, its the 3 pin version as well.
 
Yes I´m sure, otherwise it wouldn´t work on 12V.
Do you know if the FC5 drops the positive 12V voltage or it raises the ground voltage?
 
You must log in or register to reply here.
Back
Top Bottom