Toshiba MD-VNK802HEXE Service Manual page 53

9-2. How to check for errors
The remote controller (local remote controller or central control) is equipped with an LCD that displays the operation
status. If an error has occurred, see the following tables to check the error of the Air to Air Heat Exchanger with DX
Coil Unit using the failure diagnosis function.
The following tables show lists of the check codes indicated by each device. See the following tables for how to
check depending on the location.
• To check using the indoor remote controller or TCC-LINK central controller...See "Local remote controller &
TCC-LINK central controller" in the following table.
• To check from the outdoor unit...See "7-segment display of outdoor unit" in the following table.
Check code list (Indoor)
(Air to Air Heat Exchanger with DX Coil Unit)
Check code
Local remote 7-segment display of
controller & outdoor unit
TCC-LINK
central
Sub code
controller
E03 –
E04 –
E08 E08 Duplicate indoor unit No. Duplicate indoor addresses
E10 –
E18 –
F01 –
F02 –
F03 –
F10 –
F11 –
F29 –
L02 –
L03 –
L07 –
L08 L08
L09 –
L20 –
L30 L30 Detected indoor unit No.
F17 –
F18 –
P01 –
P10 P10 Detected indoor unit No. Indoor overflow detected
P12 –
P31 –
Typical cause of error
Indoor unit - remote controller regular
–
communication error
Indoor unit - outdoor unit regular
–
communication error
– Indoor MCU communication error
Header indoor unit - Follower indoor unit
–
regular communication error
Indoor heat exchange temperature sensor
–
(TCJ) error
Indoor heat exchange temperature sensor
–
(TC2) error
Indoor heat exchange temperature sensor
–
(TC1) error
– Air temperature sensor (TSA) error
– Discharge temperature sensor (TFA) error
– Indoor unit or other P.C. board error
– Outdoor unit model mismatch error
Duplicate indoor group header unit
–
settings
– Group line in an individual indoor unit
– Indoor group address not set
– Indoor capacity not set
– Duplicate central control addresses
External error input into indoor unit
(Interlock)
Outdoor air temperature sensor (TOA)
–
error
– Return air temperature sensor (TRA) error
– Indoor AC fan error
– Indoor DC fan error
– Other indoor unit errors
No data is received from the remote controller or network adapter.
(Also no central control communication)
No data is received from the outdoor unit.
The same address was detected.
There is a communication error between the main and motor micro
controller MCU.
Regular communication is not possible between the header and
follower indoor units.
Open-circuit or short-circuit of the heat exchange temperature
sensor (TCJ) was detected.
Open-circuit or short-circuit of the heat exchange temperature
sensor (TC2) was detected.
Open-circuit or short-circuit of the heat exchange temperature
sensor (TC1) was detected.
Open-circuit or short-circuit of the air temperature sensor (TSA)
was detected.
Open-circuit or short-circuit of the discharge temperature sensor
(TFA) was detected.
EEPROM error (Another error may have been detected)
The outdoor unit model is not supported.
There are multiple header units in the group.
There are one or more group-connected indoor units.
The indoor address group has not been set. (May also be detected
on the outdoor unit)
The indoor capacity has not been set.
Central control addresses are duplicate.
Stopped abnormally due to external error (CN80) input.
Open-circuit or short-circuit of the outdoor air temperature sensor
(TOA) was detected.
Open-circuit or short-circuit of the return air temperature sensor
(TRA) was detected.
The indoor AC fan error was detected. (Fan motor thermal relay)
The float switch has worked.
The indoor DC fan error (overcurrent, lock, etc.) was detected
The group follower unit cannot run due to E03 / L03 / L07 / L08
error of the header unit.
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Description