∗
1: These are representative examples and the check code differs according to the outdoor unit to be combined.
⎫
⎪
⎬
⎪
⎭
⎫
⎬
⎭
⎫
⎬
⎭
⎫
⎪
⎬
⎪
⎭
⎫
⎬
⎭
⎫
⎪
⎬
⎪
⎭
⎫
⎪
⎬
⎪
⎭
Lamp indication
Operation Timer
Ready
No indication at all
Operation Timer
Ready
Flash
Operation Timer
Ready
Flash
Operation Timer
Ready
Alternate flash
Operation Timer
Ready
Alternate flash
Check code
—
E01
E02
E03
E08
E09
E10
E18
E04
P10
P12
P03
P04
P05
P07
P15
P19
P20
P22
P26
P29
P31
Cause of trouble occurrence
Power supply OFF or miswiring between lamp indication unit and indoor unit
Receiving unit
Receiving
trouble
Sending
trouble
Communication stop
Miswiring or wire connection
trouble
between receiving unit and indoor unit
Duplicated indoor unit No.
Setup
trouble
Duplicated master units of remote controller
UART communication trouble
Wire connection
trouble
between indoor units, Indoor power OFF
(Communication stop between indoor header and follower)
Miswiring between indoor unit and outdoor unit or connection
trouble
(Communication stop between indoor and outdoor units)
Overflow was detected.
Protective device of indoor unit worked.
Indoor DC fan
trouble
Protective device of
∗
1
Outdoor unit discharge temp.
trouble
Outdoor high pressure system
trouble
outdoor unit worked.
Outdoor unit
trouble
Negative phase detection
trouble
Heat sink overheat
trouble
Gas leak detection
trouble
4-way valve system
trouble
(Indoor or outdoor unit judged.)
Outdoor unit high pressure protection
Protective device of
∗
1
Outdoor unit: Outdoor unit
trouble
Outdoor unit: Inverter Idc operation
Outdoor unit: Position detection
trouble
outdoor unit worked.
Stopped because
trouble
of other indoor unit in a group
(Check codes of E03/L03/L07/L08)
Outline of judgment
The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with
the following method.
Method to judge the erroneous position by display panel of the indoor unit
(lamp display of the wireless receiving part)
The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis
are displayed restricted to the following cases if a protective circuit works.
: Go off, : Go on,
: Flash (0.5 sec.)
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