Toshiba A03-009, Service Manual

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Check code Display of receiving unit
Typical fault site Description of error
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 erro
Communication from remote controller or network adaptor has
been lost (so has central control communication).
E04
Indoor-outdoor periodic
communication error
Signals are not being received from outdoor unit.
E08 E08 Duplicated indoor address Duplicated indoor address Indoor unit detects address identical to its own.
E10
Indoor inter-MCU communication
error
MCU communication between main controller and motor
microcontroller is faulty.
E18
Error 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) error
Heat exchanger temperature sensor (TCJ) has been open /
shortcircuited.
F02 ALT Indoor heat exchanger
temperature sensor (TC2) error
Heat exchanger temperature sensor (TC2) has been open /
shortcircuited.
F03 ALT Indoor heat exchanger
temperature sensor (TC1) error
Heat exchanger temperature sensor (TC1) has been open /
shortcircuited.
F10 ALT Ambient temperature sensor (TA)
error
Ambient temperature sensor (TA) has been open / short-circuited.
F11 ALT Discharge temperature sensor
(TF) error
Discharge temperature sensor (TF) has been open /
shortcircuited.
F29 SIM P.C. board or other indoor error 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 error input
(interlock)
Unit shutdown has been caused by external error input (CN80).
P01 ALT Indoor AC fan error
Indoor AC fan error is detected (activation of fan motor thermal
relay).
P10 P10 Detected indoor unit No. ALT Indoor overflow error Float switch has been activated.
P12 ALT Indoor DC fan error Indoor DC fan error (e.g. overcurrent or lock-up) is detected.
P31 ALT Other indoor unit error
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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6-2. 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 fault site / faulty part
may be identified in the event of a fault 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 fault in consultation with the list.
• When investigating a fault 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 fault on the basis of a display provided on an outdoor unit - See the “Outdoor 7-
segment display” section of the list.
• When investigating a fault on the basis of a display provided on the AI-NET central control remote controller -
See the “AI-NET central control display” section of the list.
• When investigating a fault on the basis of a wireless remote controller-controlled indoor unit - See the “Light
sensor indicator light block” section of the list.
List of check codes (indoor unit)
(Error detected by indoor unit)