Jandy Laars LX Pool Heater / 400,000 BTU / Natural Gas "polaris water" Questions

...polaris]. The filter pump is pumping fine,and water IS flowing through heater with just this pump on,but the heater is not sensing it. If the polaris pump is being supplied before the heater it is ...

Blower motor was ceased, changed it but seems like I have a relay not working to power the motor. Can anyone help me? Warranty? Customer service? Wild guess there is a damper on the top and a switch ...