Peltier and breakout board

So basically, I just recieved my LTC3108 breakout board and wanted to test it. The way it (supposedly) works is you solder two specific points on the board together to indicate a specific output voltage. You can see my two joints in the bottom right side of the board, which gives an output of 2.35v at Vout. If you look at my white led, it is set in Vout and my peltier is soldered into Vin. When holding down on the peltier, it doesn't light. The multimeter reads absolutely no voltage going into Vout. Does anything look wrong with my set up? Here is a link to where I bought it with info on its usage in the description.


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    \$\begingroup\$ What do you mean "hodling down" on TEC? How do you create temperature difference across TEC plates? \$\endgroup\$ – Ale..chenski Nov 6 '16 at 0:47
  • \$\begingroup\$ Also, are you sure that your LED's Vf is under 2.35V? \$\endgroup\$ – ThreePhaseEel Nov 6 '16 at 1:56
  • \$\begingroup\$ @ThreePhaseEel if the multimeter read 0 voltage at Vout, then that would be why it's not lighting. Either way though, its a 1.8v LED. \$\endgroup\$ – MH0517 Nov 6 '16 at 3:31
  • \$\begingroup\$ @AliChen I use my hand's heat on one side and copper heatsink on the opposite. \$\endgroup\$ – MH0517 Nov 6 '16 at 3:32
  • \$\begingroup\$ Are PGD and/or VLDO from the LTC3108 coming up? \$\endgroup\$ – ThreePhaseEel Nov 6 '16 at 3:33

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