My industrial relay is closing without any input signal connected or the indicator light coming on, what the?

I am using an industrial high current relay to control a Peltier-Cooler. Controlling the relay is a National Instruments DAQ. Even when the signal is off(no indicator light on the relay), the Peltier-Coller is coming on??? Maybe some information on basic function of relays might help, I've done a lot of... show more I am using an industrial high current relay to control a Peltier-Cooler. Controlling the relay is a National Instruments DAQ. Even when the signal is off(no indicator light on the relay), the Peltier-Coller is coming on??? Maybe some information on basic function of relays might help, I've done a lot of research with no avail.
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