boat instrument panel not working

• 2023-02-28

The boat instrument panel not working . Try to press the start button of the oil pump and observe whether the motor relay is engaged. 1. If the relay is not closed, check 1) whether the motor thermal relay acts or is damaged. 2) Check whether the power circuit is normal (check with a multimeter). 3) Check whether the start and stop button contacts are normal and whether the control circuit is open. 4) Check whether the relay coil is damaged (check with a multimeter). 2. If the relay is closed after the oil pump is started, check 1) whether the oil pump is damaged or stuck. 2) Check whether the circuit from relay to motor is normal. 3) Check whether the oil pump is damaged or assembled too tightly. It should be easy to move the coupling by hand, and the axial moving coupling should have a clearance of about 3~5mm.

If the fuse is blown, there are only two reasons for the fuse to blow: first, the fuse is thin. Solution: 30A fuse or fuse can be selected. 2、 There is loose contact or oxidation at the line or switch. Solution: carefully observe whether there is oxidation in the terminal post of the knife switch, and fasten all the terminals with a screwdriver, including the screws at both ends of the fuse. If the fuse is still burnt out in the above two points, check whether the line connector is firm, whether the socket is tightened with the line, and whether the socket is qualified.

Measure the coil and contact group respectively. Measurement method of coil resistance: use the ohm gear of the multimeter , place the multimeter in the appropriate resistance gear, and connect two probes to the lead pin of the relay coil for measurement . Compare the test result with the nominal value to determine whether the coil has an open circuit ; If the resistance value is obviously small, the coil has local short circuit fault; If the resistance value is zero , it means that the coil is short-circuited; If the resistance value is infinite , the coil is open circuit . Measuring method of contact resistance: use the ohm gear of a multimeter and the 100 Ω resistance gear of a multimeter to measure the resistance between normally closed contacts, which usually shows a few tenths of an ohm .