Waiting means the thermostat has a heating, cooling, or ventilation request and is waiting to get confirmation from another Pelican device that the cycle is active.
Most commonly a thermostat is waiting to get confirmation from a Pelican zone controller (Z8 or Z24). A thermostat might also be waiting for waterflow (water-source heat pumps) or a boiler or chiller to be enabled (2-pipe or 4-pipe fan coils) by a Pelican device (Z8, Z24, or PM5).
Note: Waiting does not mean the system is not working. This is a standard function of your Pelican solution.