Assalamualikum all,Atm dose not work. Ist all every thing change such as shut of valve, modulator valve,solenoid valve,filter clean,regulator clean,then start the Atm but trip valve tripted finally trip valve change then start the Atm,frequency show 450,then off the atm.at that time full atm change,now this time atm start but atm not carry the load,what happend,please advise me what i do?