Itasca Ellipse Hydronic Heat Aqua Hot

There is NO fan that pushes anything. There is a PUMP that circulates the water thru each zones radiators and those radiators do have a fan to gently push the air thru the radiator fins. What usually happens on a Aquahot system is simple. For each zone, there is a brass check valve on the outlet hot water hose at the Aquahot. From NOT running the Heating zones monthly, those check valve lids stick and will not allow the water pump for that zone to push the hot water thru. The fix is to take a small hammer and lightly bang on the brass check valve while the system is running. Aqua hot systems need to have the heating zones cycled at least once a month for just a few minutes to prevent this from happening. It may take a little while to get the check valve to pop open. Doug