Mitsubishi Electric LGH-F300RVX-E Handbook page 28

Error LED1 LED2
Symptom
code (Green) (Red)
4101 11 Overcurrent
blinks error of the
remote con-
troller termi-
nal
4116 1 Abnormal
blink rotation of the
supply fan
motor
(in the lower
unit for LGH-
F1200RVX-E)
(Centrifugal
fan does not
work, insuf-
ficient motor
speed, ex-
cessive motor
speed, or
rotation de-
tected when
operation is
stopped)
Cause
Shorting between remote controller
terminals
In one group, two or more Lossnay
units are set as the main Lossnay
(SW5-10 ON).
M-NET transmission cable is con-
nected to the remote controller termi-
nal block (TM4 [1] [2]).
Three or more remote controllers are
connected.
Circuit board failure
Remote controller failure
Faulty connection of the supply fan
motor connector (CN10) on the pow-
er circuit board
Faulty connection of the connectors
(CN18 - CN118 and CN19 - CN119)
between the control circuit board and
power circuit board
The model selection switch (SW6) is
not set correctly.
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
─ 28 ─
Corrective action
Check the remote controller wiring.
Only one Lossnay unit can be set
as the main Lossnay in one group.
(See the Lossnay technical manual.)
Connect the M-NET transmission
cable to the M-NET transmission
cable terminal block (TB5 [A] [B]).
Up to two remote controllers can be
connected.
Replace the circuit board.
Replace the remote controller.
Check the connector (CN10) con-
nection.
Check the connector connections
(CN18 - CN118 and CN19 - CN119).
Make the SW6 setting appropriate
for the model.
(See chapter 8. (8) Setting status
record (page 48).)
Use the product at a temperature of
164°F (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 centrifugal fan, and remove any
foreign matter.
Check the resistance between the
motor leads.
(See (6) Motor resistance table
(page 36).)
If the measured value is significantly
different from the values specified in
the table, replace the fan motor.
Replace the circuit board.