The number of flashes depends on what kind of operational error was recorded. Each flash will last second. After the actual number of flashes, there will be a delay with no flashes, so that the sequence for each error can be repeated every 4 seconds. If the refrigeration system has been too heavily loaded, or if the ambient temperature is too high, the electronic unit will run too hot. If the refrigeration system is too heavily loaded, the motor cannot maintain minimum speed 1800 rpm.
Motor is blocked or the differential pressure in the refrigeration system is too high.
The voltage is outside the cutout setting.