Found gas fryer unit with e32, checked hi limit, and vacuum switch found okay found hose fell off blower. Re-secured hose tested, found pilots to light but not burners, found no voltage to gas valve main burner port. Checked modules looked in bad condition, also checked flame sensors found putting low flame sense. Replace left hand side, customer is ordering flame sensor for right side and two modules. Will call when parts are received. 6-5-20 Installed right hand flame sense and both modules, turned on found not working, found solenoid valve had wires fall out, reinstalled wires turned on found to heat. Tightened piping on relief valve. Unit is operating correctly at this time.