12B.Check the electric wiring according to the electric wiring diagram; and bondingconnection.C.Make sure that the main machine power switch is offD.Check the temperature setting.E. Check the air inlet and outlet.2.TrialA.The user must “Start the Pump before the Machine, And Turn off the Machinebefore the Pump”, or the machine will be damaged.;B.The user should start the pump, check for any leakage of water; and then setsuitable temperature in the thermostat, and then switch on power supply.C.In order to protect the swimming pool heater, the machine is equipped with a timelag starting function, when starting the machine, the blower will run 3 minutesearlier than the compressor.D.After the swimming pool heater starts up, check for any abnormal noise from themachine.VIII. Precautions1 AttentionA.Set proper temperature in order to get comfortable water temperature; to avoidoverheating or overcooling.B.Please don’t stack substances that can block air flow near inlet or outlet area, or theefficiency of the heater will be reduced or even stopped.