Hello AndyNCSU, If you’re removing your rain sensor from your timer you will need to turn the sensor off at your timer. To do so you’ll have to set your timer to auto, and then at the actual timer hold down the rain sensor button. Either sensor off or sensor on will appear indicating which mode it was just set to. You will want your sensor to be set to off. If you need any further assistance with anything please just let us know (if the issue continues try putting the jumper cable back into the 2 sensor terminals on your timer, and provide us with your mac address to check for any necessary firmware updates). Have a great day!