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If “VOLTAGE REGULATION” appears on the Display
Excessively high voltage from the commercial
power grid can harm electric appliances. If
“VOLTAGE REGULATION” appears on the Remote
Controller, the inverter is temporarily regulating
output to prevent voltage from rising.
This message disappears once the voltage returns
to normal.
• B o t h “ T E M P E R A T U R E S U P P R E S S I O N ” a n d “ V O L T A G E
REGULATION” may be displayed at the same time. In that case, the
display reads “TEMPERATURE.VOLTAGE SUPPRESSION”.
• If “TEMPERATURE SUPPRESSION,” “VOLTAGE REGULATION” OR
“TEMPERATURE.VOLTAGE SUPPRESSION” often appear on the
display or remain on the display for long periods of time, contact the
service center.
If a large number of households use their electricity at the same time, the power supply voltage may drop to a
level set by the power company. Inversely, voltage can rise when electricity consumption decreases.
If the voltage on the commercial power grid exceeds the level set by the power company, the inverter
regulates the amount of generated power in order counter the voltage rise on the grid, and displays
“VOLTAGE REGULATION.”
Once voltage on the commercial power grid returns to normal, the “VOLTAGE REGULATION” message
disappears and the inverter resumes normal operation.
If “VOLTAGE REGULATION” often appears on the display, contact the service center.
If “TEMPERATURE SUPPRESSION” appears on the Display
If “TEMPERATURE.VOLTAGE SUPPRESSION” appears on the Display
Excessively high temperatures inside the inverter
can harm the equipment. If “TEMPERATURE
SUPPRESSION” appears on the Remote Controller,
the inverter is temporarily regulating output
regardless of the surrounding temperature, to
prevent temperature from rising.
This message disappears once the temperature
returns to normal.
About Voltage Regulation
If the inverter does not run for a long period of time whether because grid-tied operation or stand-alone
operation was manually stopped, an outage has occurred on the commercial power grid, or due to an issue
with the equipment, the equipment, the storage batteries are not charged. If left in this condition, the switch
inside the storage battery automatically shuts off to prevent over-discharging. Once this switch shuts off,
servicing is required before the inverter can be used again.
If operation cannot be restored after trouble occurs, contact the service center.
If the Inverter Is Shutdown for Long Periods of Time
If an outage occurs on the commercial power grid, an error
message and error code are displayed on the Remote Controller.
In an outage on the commercial power grid, the inverter
temporarily stops operating. However, after about 10 seconds, it
engages stand-alone operation and starts supplying power again.
A few minutes after power from the commercial power grid is
restored, the inverter automatically restarts grid-tied operation.
(You do not need to press the [RUN/STOP] button.)
If there is an equipment failure and an error message and error
code displayed are on the Remote Controller, resolve the issue as
explained in “Troubleshooting” (Page 58).
Error Message
Press the [BACK] button to
return to the home screen.
Error Code
CENTER.
GRID ABNORMALITY DETECTED.
WILL RESTART IN 5 MIN. ONCE GRID IS
BACK TO NORMAL. PLEASE CONTACT THE
SERVICE CENTER IF THE ERROR MESSAGE
CONTINUES MORE THAN 5 MIN.
■
If an Outage Occurs on the Commercial Power Grid
■
Equipment Troubleshooting
