Specifications

118
Error Code Meaning of error code and detection method Case Judgment and action
E6
(
e6)
1 Contact failure, short circuit or,
mis-wiring (converse wiring) of
indoor/outdoor unit connecting
wire.
2 Mis-wiring of outdoor power
supply wire and indoor/outdoor
unit connecting wire
3 Defective transmitting receiv-
ing circuit of indoor controller
board
4 Defective transmitting receiv-
ing circuit of indoor controller
board
5 Noise has entered into
indoor/outdoor unit connecting
wire.
✽ Check LED display on outdoor controller board.
Refer to EA-EC item (on outdoor unit section)
if LED displays EA-EC.
1 Check disconnection or looseness of indoor/
outdoor unit connecting wire of indoor unit or
outdoor unit.
2 Check wiring of outdoor power supply wire
and indoor/outdoor unit connecting wire
3-5 Put the power off, and of again to check.
If abnormality generates again, replace
indoor controller board or outdoor con-
troller board.
✽ Other indoor controller board may have
defective in case of twin triple indoor unit
system.
E7
Indoor/outdoor unit communication
error (Transmitting error)
Abnormal if “1” receiving is detected 30
times continuously though indoor controller
board has transmitted “0”.
1 Defective transmitting receiv-
ing circuit of indoor controller
board
2 Noise has entered into power
supply.
3 Noise has entered into outdoor
control wire.
1-3 Put the power off, and on again to check.
If abnormality generates again, replace
indoor controller board.
Indoor/outdoor unit communication
error (Signal receiving error)
1 Abnormal if indoor controller board can
not receive any signal normally for six
minutes after putting the power on.
2 Abnormal if indoor controller board can
not receive any signal normally for three
minutes.
3 Consider the unit abnormal under the
following condition: When two or more
indoor units are connected to one out-
door unit, outdoor unit cannot receive a
signal for three minutes from indoor con-
troller board, a signal which allows out-
door controller board to transmit signals.
Error Code Meaning of error code and detection method Case Judgment and action
None
—
1 No voltage is supplied to termi-
nal block (TB1) of indoor unit.
a) Power supply breaker is put
off.
b) Contact failure or discon-
nection of power supply ter-
minal
c) L1-phased open phase
2 Electric power is not charged
to power supply terminal of
controller board.
a) Contact failure of power
supply terminal
b) Disconnection of terminal R
or 4/S on controller board
3 Defective outdoor controller
board
a) Fuse 5A on controller board
is blown.
b) Defective parts
1 Check following items.
a) Power supply breaker
b) Connection of power supply terminal
block (TB1).
c) Connection of power supply terminal
block (TB1).
2 Check following items.
a) Connection of power supply terminal
block (TB1).
b) Connection of terminal on controller board
3 Replace following items.
a) Fuse 5A
b) Controller board (When items above are
checked but the units can not be repaired)
F1
(4103)
Reverse phase detection, Power supply
and indoor/outdoor unit connecting
wire converse connection
1. Three seconds after power on, judge
reverse phase by detecting voltage
phase of each phase.
2. Abnormal four minutes after power on if
power supply and indoor/outdoor unit
connecting wire have converse connec-
tion.
1 L1, L2, L3 are not connected
correctly.
2 Converse wiring of outdoor
power supply line (TB1) and
indoor power supply wire
(TB4)
1
• Check outdoor power supply connection
(TB1)
• Replace two phases (for example phase L1
and phase L2) out of three phases of outdoor
power supply line (TB1)
2 Check wiring connection.
F2
(4102)
L3-phased open phase detection
Detect open phase two seconds after
power on.
1 L3-phased open-phase 1 Check power supply.
<Abnormalities detected when the power is put on>
(Note 1) The number in ( ) is the error cord of upper remote controller (M-NET)
(Note 2) Refer to indoor unit section for code P and code E.
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