Troubel removal and maintance method：
　　In daily use,certain problems will occur：
　　　　1、Nothing shows on digital display
　　　　2、No heating
　　　　3、No surfing
　　　　4、No vibration
　　　　5、Too much noise
　　　　6、No bubble,no ozone,no function
As to aboved problems,please operate like this：
1．Nothing shows on digital display：
　　Open the outer tub with screwdriver and check power line by AC voltage of universal electric meter, see whether the output with 220V or not. If no voltage output, please switch by the same model power line; if so, check fuse base on the circuit board(main control board), fuse burned, change with the same specification fuse. If it is ok, check power transformer. No 12v voltage output, switch by the same transformer, with 12v voltage, please check 5V DC power on the circuit board. No 5V voltage output,change circuit board(main control board), with 5V voltage output, test connection line on the small circuit board, if the line has non-conducted core wire, please change a new connection line, but if the line is good, replace the small circuit board.
2．"OF" shows on digital display;
　　If you press any button all shows "OF", please check if the water temperature is too high, then pour some cold water, after repeat operations it still shows "OF", replace it with a new membrane switch. If it works,membrane switch broken,change the membrane switch.After changing,it shows "OF",please check small circuit board.
3．No heating：
　　Press heating button after starting the power supply, measuring the main control panel with universal electric meter to check whether there is AC 220V voltage output, if no, please change it;if so, check the circulation of thermal protector. If no circulation,please replace it, if so, then check the circulation of both sides on glass tube.No circulation,change it.
4．No surfing：
　　Press heating button after starting the power supply,measuring the main control panel with universal electric meter to check whether there is AC 220V voltage output,if no, please change it;if so, open the pump and see whether there is dirty substance in it and substance jammed the silicone tube.Clean it if there is dirt.
5．No vibration：
Press vibration button after starting the power supply,measuring the main control panel with universal electric meter to check whether there is AC 220V voltage output, if no, please change it; if so, check whether there is electric resistance in electric wheel. Without electric resistance,change it, if so, check the electric line is blocked or not,knocked by hammer and loose can turn.
6．Too much vibration noise：
　　Check if fixed screw on electric machine is loosen,press tight if loose;if no loosen,inspect motor bearing wear conditions,if gap too big,change it.
7．No bubble：
　　Press bubble button after starting the power supply, measuring the main control panel with universal electric meter to check whether there is AC 220V voltage output, if no, please change the main control panel; if so, check whether air pump broken, out of order, magnet fell off. If there are aboved situation, change it; if no, check the smooth of water-stop valve.
8．No ozone：
　　Starting the power supply,measuring the main control panel with universal electric meter to check whether there is AC 220V voltage output,if no,please change the main control panel;if so,check whether there is high pressure ionization sound on ozone generator.Change the ozone generator without voltage.