Temperature Control Unit not sending power to the load

I have a new Ringder RC-112E, 250V AC temperature controller using 120V AC that was purchased several years ago but never used for anything until now. I programmed it per the instructions for heating and the power light turns on and I can hear the relay click when the ambient temp is below the set temperature but there is no power on the load terminals.

Owner's Manual
https://www.manualslib.com/manual/1397988/Ringder-Rc-112e.html

Settings:

As an example – the desired Temperature is set to 57 C

HC Mode = Heat
Differential = 3 (3 is recommended. I tried lower and higher as well)
Low Temp Setting = 0 C (My understanding is this is irrelevant if set to heat mode)
High Temp Setting = 67 C (The low and high temp settings are used to prevent setting beyond those temps.)
Calibration = 0
Delay Time = 0

Any suggestions on what I am doing wrong would be appreciated. I am guessing it is defective as I can hear the relay click when the temp drops below the set point, but as noted above, no power is ever sent to the load connectors.