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52
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Check code
Display of receiving unit
Typical trouble on site
Description of check code
TCC-LINK
central control
or main remote
controller
display
Outdoor 7-segment display
Indicator light block
Sub-code
Flash
E03
Indoor-remote controller periodic
communication
check code
Communication from remote controller or network adaptor has
been lost (so has central control communication).
E04
Indoor-outdoor periodic
communication
check code
Signals are not being received from outdoor unit.
E08
E08 Duplicated indoor address
E10
Duplicated indoor address
UART communication
trouble
Indoor unit detects address identical to its own.
Communication error between CDB(MCC-1643) and
FAN-IPDU(MCC-1610).
E18
Check cod in periodic
communication between indoor
header and follower unit
Periodic communication between indoor header and follower units
cannot be maintained.
F01
ALT
Indoor heat exchanger
temperature sensor (TCJ)
check
code
Heat exchanger temperature sensor (TCJ) has been open /
shortcircuited.
F02
ALT
Indoor heat exchanger
temperature sensor (TC2)
check code
Heat exchanger temperature sensor (TC2) has been open /
shortcircuited.
F03
ALT
Indoor heat exchanger
temperature sensor (TC1)
check code
Heat exchanger temperature sensor (TC1) has been open /
shortcircuited.
F10
ALT
Ambient temperature sensor (TA)
check code
Ambient temperature sensor (TA) has been open / short-circuited.
F11
ALT
Discharge temperature sensor
(TF)
check code
Discharge temperature sensor (TF) has been open /
shortcircuited.
F29
SIM
Indoor EEPROM is abnormal (some other error may be detected).
L03
SIM
Duplicated indoor group header
unit
There is more than one header unit in group.
L07
SIM
Connection of group control cable
to stand-alone indoor unit
There is at least one stand-alone indoor unit to which group control
cable is connected.
L08
L08
SIM
Indoor group address not set
Address setting has not been performed for one or more indoor
units (also detected at outdoor unit end).
L09
SIM Indoor capacity not set
Capacity setting has not been performed for indoor unit.
L20
SIM
SIM
Duplicated central control address There is duplication in central control address setting.
L30
L30
Detected indoor unit No.
Indoor external
check code
input
(interlock)
Unit shutdown has been caused by external
check code
input (CN80).
P01
ALT
Indoor AC fan
check code
Indoor AC fan
check code
is detected (activation of fan motor
thermal
relay).
P10
P10
Detected indoor unit No.
ALT
Indoor overflow
check code
Float switch has been activated.
P12
ALT
Indoor DC fan
check code
(e.g. overcurrent or lock-up)
is detected.
P31
ALT
Other indoor unit
check code
Follower unit cannot be operated due to header unit alarm
(E03 /L03 / L07 / L08).
IPDU: Intelligent Power Drive Unit (Inverter P.C. board)
: Goes off
: Lighting, : Flashing,
ALT.: Flashing is alternately when there are two flashing LED
SIM: Simultaneous flashing when there are two flashing LED
Timer Ready
Operation
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Indoor DC fan check code
9-2. Troubleshooting method
The remote controllers (main remote controller and central control remote controller) and the interface P.C.
board of an outdoor unit are provided with an LCD display (remote controller) or a 7-segment display (outdoor
interface P.C. board) to display operational status. Using this self-diagnosis feature, the
trouble
site /
trouble
part
may be identified in the event of a
trouble
by following the method described below.
The list below summarizes check codes detected by various devices. Analyze the check code according to
where it is displayed and work out the nature of the
trouble
in consultation with the list.
• When investigating a
trouble
on the basis of a display provided on the indoor remote controller or TCC-LINK
central control remote controller -
See the “TCC-LINK remote controller or main remote controller display” section of the list.
• When investigating a
trouble
on the basis of a display provided on an outdoor unit - See the “Outdoor 7-
segment display” section of the list.
• When investigating a
trouble
on the basis of a wireless remote controller-controlled indoor unit - See the
"Indicator light block"
section of the list.
List of check codes (indoor unit)
(Check code
detected by indoor unit)
Communication
check code
between
Application control kit
and indoor unit
Communica
tion check code b
etween Application control kit and
indoor unit P.C. board
E1
1
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P.C. board or other indoor
check code
AMP Air Conditioning
www.ampair.co.uk | [email protected]
