I have had electrical underfloor heating for 4 years. 5 mats each with an Aube TH132 control unit and Aube PB130 base. The largest controls a mat of approx 21 sq metres and it doesn't work.
When the control unit switches on after a minute or so the LCD display fades and goes blank, resets and the floor will not get warm. I swapped the control unit to another mat and it works fine, but a new unit on the original base/mat has the same problem - blank screen, no heat and then the display reads as if it has been turned on after initial installation.
All other mats are OK, so I think maybe I need a new base unit? Also the resistive load on the base should not exceed 3450Watts and I wonder if that may be the reason it has failed. I have read that a contactor and a snubber may be needed, but have no idea whether my system has them or where they might be sited.
Sorry for so many questions
but any advice would be helpful, thanks Mick
When the control unit switches on after a minute or so the LCD display fades and goes blank, resets and the floor will not get warm. I swapped the control unit to another mat and it works fine, but a new unit on the original base/mat has the same problem - blank screen, no heat and then the display reads as if it has been turned on after initial installation.
All other mats are OK, so I think maybe I need a new base unit? Also the resistive load on the base should not exceed 3450Watts and I wonder if that may be the reason it has failed. I have read that a contactor and a snubber may be needed, but have no idea whether my system has them or where they might be sited.
Sorry for so many questions
but any advice would be helpful, thanks Mick 
