Mitsubishi Electric Lossnay VL-220CZGV-EB Handbook page 25

(5) Failure mode 5: Error code and LED display
An error code displayed on the remote controller (PZ-61DR-E or PZ-43SMF-E) and blinking or illumination of
LED1 (green) on the circuit board show the type of an error.
The LED blink interval is 0.25 seconds for both on and off. The display duration is approximately 7 seconds.
Error display list
Error LED1
Symptom
Code (green)
0900 Trial opera-
tion
4101 11 Overcurrent
blinks error of
the remote
controller
terminal
4116 1 Abnormal
blink rotation of
the supply
fan motor
(Centrifugal
fan does not
work, insuf-
ficient motor
speed, ex-
cessive mo-
tor speed, or
rotation de-
tected when
operation is
stopped)
2 Abnormal
blinks rotation of
the exhaust
fan motor
(Centrifugal
fan does not
work, insuf-
ficient motor
speed, ex-
cessive mo-
tor speed, or
rotation de-
tected when
operation is
stopped)
0.25 s 0.25 s 0.25 s
ON
OFF
Error display example: Two blinks
Cause
The trial operation switch (SW2-1)
on the circuit board is set to "ON".
Shorting between remote controller
terminals
Two Lossnay units are set as the
main Lossnay (SW5-10 ON).
Circuit board failure
Remote controller failure
Faulty connection of the supply
fan motor connector (CN10) on the
power circuit board
Faulty connection of the connectors
(CN18 - CN118 and CN19 - CN119)
between the control circuit board
and power circuit board
The temperature around the product
is high.
The motor and centrifugal fan are
not fixed securely.
Deformed centrifugal fan
Foreign objects around the centrifu-
gal fan
Fan motor failure
Circuit board failure
Faulty connection of the exhaust fan
motor connector (CN9) on the power
circuit board
Faulty connection of the connectors
(CN18 - CN118 and CN19 - CN119)
between the control circuit board
and power circuit board
The temperature around the product
is high.
The motor and centrifugal fan are
not fixed securely.
Deformed centrifugal fan
Foreign objects around the centrifu-
gal fan
Fan motor failure
Circuit board failure
─ 25 ─
7 s
Check the trial operation switch.
(See the Lossnay installation manual.)
Check the remote controller wiring.
Only one Lossnay unit can be set as the
main Lossnay.
(See the Lossnay technical manual.)
Replace the circuit board.
Replace the remote controller.
Check the connector (CN10) connection.
Check the connector connections
(CN18 - CN118 and CN19 - CN119).
Use the product at a temperature of 40°C
or lower.
Check the installation state of the motor
and centrifugal fan, and fix them securely.
Replace the centrifugal fan.
Check the air course and around the cen-
trifugal fan, and remove any foreign matter.
Replace the fan motor.
Replace the circuit board.
Check the connector (CN9) connection.
Check the connector connections
(CN18 - CN118 and CN19 - CN119).
Use the product at a temperature of 40°C
or lower.
Check the installation state of the motor
and centrifugal fan, and fix them securely.
Replace the centrifugal fan.
Check the air course and around the cen-
trifugal fan, and remove any foreign matter.
Replace the fan motor.
Replace the circuit board.
Corrective action