Toshiba MMY-MAP0804T8P-T User Manual

– 165 –
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 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
Outdoor 7-segment display Indicator light block
Sub-code
Flash
E03
Indoor-remote controller periodic
communication error
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 .nwo sti ot lacitnedi sserdda stceted tinu roodnIsserdda roodni detacilpuDsserdda roodni detacilpuD
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.
TLA––10F
Indoor heat exchanger
temperature sensor (TCJ) error
Heat exchanger temperature sensor (TCJ) has
been open/short-circuited.
TLA––20F
Indoor heat exchanger
temperature sensor (TC2) error
Heat exchanger temperature sensor (TC2) has
been open/short-circuited.
TLA––30F
Indoor heat exchanger
temperature sensor (TC1) error
Heat exchanger temperature sensor (TC1) has
been open/short-circuited.
TLA––01F
Ambient temperature sensor (TA)
error
Ambient temperature sensor (TA) has been open/
short-circuited.
TLA––11F
Discharge temperature sensor
(TF) error
Discharge temperature sensor (TF) has been open/
short-circuited.
MIS––92F P.C. board or other indoor error
Indoor EEPROM is abnormal (some other error may
be detected).
MIS––30L
Duplicated indoor group header
unit
There is more than one header unit in group.
MIS––70L
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.
MIS–80L80L Indoor group address not set
Address setting has not been performed for one or
more indoor units (also detected at outdoor unit
end).
MIS––90L Indoor capacity not set
Capacity setting has not been performed for indoor
unit.
MIS––02L Duplicated central control address
There is duplication in central control address
setting.
L30 Detected indoor unit No. SIM
Indoor external error input
(interlock)
Unit shutdown has been caused by external error
input (CN80).
TLA––10P Indoor AC fan error
Indoor AC fan error is detected (activation of fan
motor thermal relay).
P10
––
––
L30
P10 Detected indoor unit No. ALT Indoor overflow error Float switch has been activated.
TLA––21P Indoor DC fan error
Indoor DC fan error (e.g. overcurrent or lock-up) is
detected.
TLA––13P 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
TCC-LINK central
control or main
remote controller
display

Toshiba MMY-MAP0804T8P-T Specifications

General

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