Toshiba MMY-MAP0804T8P-SG User Manual

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8-2. 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 control 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)
Check code
Display of receiving unit
Typical fault site Description of error
TCC-LINK
central control
or main remote
controller
display
AI-NET central
control display
(with use of
network
adaptor)
Outdoor 7-segment display Indicator light block
Sub-code
Flash
E03 97 – –
Indoor-remote controller periodic
communication error
Communication from remote controller or network
adaptor has been lost (so has central control
communication).
E04 04 – –
Indoor-outdoor periodic
communication error
Signals are not being received from outdoor unit.
E08 96 E08 Duplicated indoor address Duplicated indoor address Indoor unit detects address identical to its own.
E10 CF – –
Indoor inter-MCU communication
error
MCU communication between main controller and
motor microcontroller is faulty.
E18 97, 99 – –
Error in periodic communication
between indoor header and
follower unit
Periodic communication between indoor header
and follower units cannot be maintained.
F01 OF – – ALT
Indoor heat exchanger
temperature sensor (TCJ) error
Heat exchanger temperature sensor (TCJ) has
been open/short-circuited.
F02 0d – – ALT
Indoor heat exchanger
temperature sensor (TC2) error
Heat exchanger temperature sensor (TC2) has
been open/short-circuited.
F03 93 – – ALT
Indoor heat exchanger
temperature sensor (TC1) error
Heat exchanger temperature sensor (TC1) has
been open/short-circuited.
F10 0C – – ALT
Ambient temperature sensor (TA)
error
Ambient temperature sensor (TA) has been open/
short-circuited.
F11 43 – – ALT
Discharge temperature sensor
(TF) error
Discharge temperature sensor (TF) has been open/
short-circuited.
F29 12 – – SIM P.C. board or other indoor error
Indoor EEPROM is abnormal (some other error may
be detected).
L03 96 – – SIM
Duplicated indoor group header
unit
There is more than one header unit in group.
L07 99 – – 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 99 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 46 – – SIM Indoor capacity not set
Capacity setting has not been performed for indoor
unit.
L20 98 – – SIM Duplicated central control address
There is duplication in central control address
setting.
L30 b6 L30 Detected indoor unit No. SIM
Indoor external error input
(interlock)
Unit shutdown has been caused by external error
input (CN80).
P01 11 – – ALT Indoor AC fan error
Indoor AC fan error is detected (activation of fan
motor thermal relay).
P10 0b P10 Detected indoor unit No. ALT Indoor overflow error Float switch has been activated.
P12 11 – – ALT Indoor DC fan error
Indoor DC fan error (e.g. overcurrent or lock-up) is
detected.
P31 47 – – 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)
: Lighting, : Flashing, : Goes off
ALT.: Flashing is alternately when there are two flashing LED
SIM: Simultaneous flashing when there are two flashing LED
Operation Timer Read
y

Toshiba MMY-MAP0804T8P-SG Specifications

General

Brand	Toshiba
Model	MMY-MAP0804T8P-SG
Category	Air Conditioner
Language	English