Yamaha EF3000iSE New Model Manual page 18

* Overload indicator lamp :
The DC-DC converter is turned on automatically, when
the generator output exceeds over 180 % of its rated
load to boost generator output to assist the starting cur-
rent of the load, such as an air conditioner.
When the DC-DC converter is turned on automatically,
the generator is obviously overloaded, thus the overload
indicator lamp blinks quickly with 0.5-second interval
for 10 seconds. And the lamp blinks slowly with 1-sec-
ond interval for 3 minutes and 50 seconds. During this
period, the DC-DC converter is prevented from reboot-
ing to prevent the battery from over-discharged.
Designation of LED indicators:
DC-DC converter unit is equipped with two indicator lamp (LED) on the unit. When the DC-DC converter is
activated automatically, indicator lamps are lit or blink to designate the state of the system. The designations
of indicator lamps are listed in the table below.
NOTE:
The red LED turns ON and interrupts DC-DC converter output automatically to protect the component, when
any of the abnormal operating conditions is detected, and returns to normal operation automatically as soon
as the abnormality is recovered.
Abnormal conditions are:
1) Too high temperature in the component
2) Too low battery voltage, below 9.5 V
3) Too high battery voltage, over 18 V
Green LED Red LED
ON OFF
Blink OFF
OFF Blink
OFF ON
– 15 –
Designation
Standby mode
Output (for 10 seconds maximum)
For 10 seconds after shutdown
Alarm mode