• If the 24 VDC input is being used on the device.
    • Is pin 2 on the Caddis 24 VDC input connected the +24 VDC signal?
    • Is pin 3 on the Caddis 24 volt input connected to ground?
  • If the 120 VAC input is being used on the device.
    • Is pin 1 on the Caddis 120 VAC input connected to the 120 VAC input signal?
    • Is pin 2 on the Caddis 120 VAC input connected to the neutral for the 120 VAC circuit?
  • Is the device grounded properly?
    • Use a digital multi-meter (DMM) to check between the Caddis signal ground and earth ground. If the reading is anything other than 0.0 VDC, there is a grounding problem.