Filter
Top Products
– 72 –
10-2. Troubleshooting
10-2-1. 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 flashing indication on the display part of the indoor unit
(sensors of the 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.)
∗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 receiving unit and indoor unit
Receiving error
Receiving unit
Miswiring or wire connection error
Sending error
Communication stop
between receiving unit and indoor unit
Duplicated indoor unit No.
Setup error
Duplicated master units of remote controller
Communication error between CPUs on indoor unit P.C. board
Wire connection error between indoor units, Indoor power OFF
(Communication stop between indoor master and follower or between main
and sub indoor twin)
Miswiring between indoor unit and outdoor unit or connection erorr
(Communication stop between indoor and outdoor units)
Overflow was detected.
Protective device of indoor unit worked.
Indoor DC fan error
Outdoor unit discharge temp. error
Protective device of
∗1
Outdoor high pressure system error
outdoor unit worked.
Power supply voltage error
Heat sink overheat error Outdoor unit error
Gas leak detection error
4-way valve system error (Indoor or outdoor unit judged.)
Outdoor unit high pressure protection
Outdoor fan system error
Protective device of
Short-circuit error of compressor driving device
∗1
Position detection circuit error
outdoor unit worked.
Stopped because of error of other indoor unit in a group
(Check codes of E03/L03/L07/L08)