16
6. BUZZER TYPES
In normal operation
In cases of abnormal operation
i) If an excessively low voltage state (80 V or below) is continued for 4 seconds or longer, LED re-
mains lighting up even after the voltage has been recovered.
ii) If the voltage drops down to a low voltage level of 65 V or below, LED remains lighting up with short
beep sounds (Pi, Pi, Pi, ...), until power switch is turned off.
If the voltage drops down further and motor stops with error, LED also remains lighting up with short
beep sounds (Pi, Pi, Pi, ...), until power switch is turned off.
iii) If an excessively high voltage state (155 V or over) is continued for 2 seconds or longer, LED lights
up without beep sounds. LED is turned off after the voltage drops down under 155 V.
iv) If the voltage increases to a high voltage level of 165 V or over for 2 seconds or longer, motor stops auto-
matically and LED remains lighting up with long beep sounds (Piii ........), until power switch is turned off.
v) In other cases of abnormal motor stop automatically, LED remains lighting up with intermittent long
beep sounds (Pi, Pi, Pi, ...), until power switch is turned off.
Buzzer sounds
Symptom
Actions taken
A one-time short beep sound (Pi)
At powering on
-
When the operating mode is switched
-
Buzzer sounds
TEMPERATURE OR
ELECTRICAL PROB-
LEM LED ( LED)
Cause
Actions taken
1
None
Lighting up
Voltage is too low or high
Examine the state of the
power supply (See
page 17)
Short beep
sounds (Pi, Pi, Pi,
...) * refer to the
below i)~iv)
2
Long beep
sounds (Pii, Pii,
Pii, ...)
Lighting up
•
Motor temperature
went abnormally high
•
Temperature in the
control circuit has built
up to an abnormally
high level
(LED remains lighting
up.)
•
Do not use the com-
pressor in extremely
high temperatures.
•
Do not clog the airflow
orifice.
•
Examine the state of
the power supply
(See page 17)
•
Do not use the com-
pressor in a place
where it can be
splashed with water or
in a highly humid place.
3
Short beep beep-
ing sounds (Pi,
Pi, Pi, ...) * refer
to the below v)
Blinking
•
Motor does not run
•
Failure in the control
circuit
(LED remains blinking.)
It is due to a failure on the
inverter or motor. Send
the machine to your deal-
er or authorized service
facility to have their
checkup or repair.
