Toshiba MMU-AP0072WH Service Manual Download Page 65

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Check code display list (Outdoor unit)

[SMMS-i interface detects error: Main example]

(

∗

)

: Goes on,

: Flashes,

: Goes off

A (Alternate)

: Flashing condition is alternate when there are two flashing LED.

S (Simultaneously) : Two LED flash simultaneously when there are two flashing LED.

Check code display

TCC-LINK central &

remote controllers

E06

(E04)

(E08)

E12
E15
E16

E19

E20

E21
E22
E23
E25
E26

E28

E31

F04
F05
F06
F07
F08
F11
F12
F15
F16
F22
F23
F24

F31

Sensor lamp display

Block display

Operation Timer Ready Flash

—

Outdoor 7-segment

Auxiliary code

E06

No. of indoor units which received signal

normally

E07

—

E08

Duplicated indoor unit number

E12

01: Indoor/Outdoor communication

02: Communication between Outdoor units

E15

—

E16

00: Capacity over

01 ~ : No. of connected units

E19

00: No center outdoor unit

02: 2 or more center outdoor units

E20

01: Connected to outdoor of other line

02: Connected to indoor of other line

E21

00: Duplicated header units

02: No header unit

E22

—

E23

—

E25

—

E26

Receive error of outdoor address

E28

Detected outdoor unit number

E31

F04

—

F05

—

F06

01: TE1

02: TE2

F07

—

F08

—

F11

—

F12

—

F15

—

F16

—

F22

—

F23

—

F24

—

F31

—

Main defective position

Decrease of quantity of indoor units

Indoor/Outdoor communication circuit error

Duplicated indoor address

Automatic address start error

There is none during auto addressing.
No. of connected indoor units:

Over capacity
No. of center outdoor units error

Connected to other line during automatic

addressing
Header heat unit quantity error

Decrease of heat unit quantity
Send error communication between

outdoor units
Duplicated terminal outdoor address setting
Decrease of connected outdoor units

Terminal outdoor error

IPDU communication error

Outdoor discharge temp. sensor (TD1) error
Outdoor discharge temp. sensor (TD2) error
Outdoor heat exchanger temp. sensor

(TE1, TE2) error
Outdoor liquid temp. sensor (TL) error
Outdoor outer air temp. sensor (TO) error

—

Outdoor suction temp. sensor (TS1) error
Outdoor temp. sensor (TE1, TL) miswiring
Outdoor pressure sensor (Pd, Ps) miswiring
Outdoor discharge temp. sensor (TD3) error
Low pressure (Ps) sensor error
High pressure (Pd) sensor error

Outdoor EEPROM error

Description

No communication from indoor unit

(Decrease of connected indoor units)
Signal cannot be sent to indoor unit.

(

→

There is no communication from outdoor unit.)

There are multiple indoor units having the same address.

(Detected also at indoor unit side)
Automatic indoor address operation while setting automatic address of other system

Outdoor automatic address operation while setting automatic indoor address
There is no signal receiving from outdoor unit during automatic addressing.
Total capacity of indoor units exceeded (total capacity of outdoor units × 135%)

There is no center outdoor unit or there are 2 or more outdoor units in 1 line.

Indoor unit of other line was detected during automatic address is been setting.

There is no header heat unit in the system, or there are multiple header units.

No communication from heat unit (Decrease of connected heat units)
Sending to other outdoor is unavailable.

Manually set outdoor address was duplicated.
No communication from terminal outdoor unit

(Decrease of connected terminal outdoor units)
Center outdoor unit detected terminal outdoor unit error.

(For terminal outdoor unit, details are displayed.)

No communication of each IPDU (P.C. board) in inverter box

Open/Short of outdoor discharge temp. sensor (TD1) was detected.
Open/Short of outdoor discharge temp. sensor (TD2) was detected.
Open/Short of heat exchanger temp. sensor (TE1, TE2) was detected.

Open/Short of outdoor liquid temp. sensor (TL) was detected.
Open/Short of outer air temp. sensor (TO) was detected.

—

Open/Short of outdoor suction temp. sensor (TS1) was detected.
Miswiring by temp. sensor (TE1, TL) was detected.
Miswiring by outdoor pressure sensor (Pd, Ps) was detected.
Open/Short of outdoor discharge temp. sensor (TD3) was detected.
Output voltage of low pressure (Ps) sensor detected 0.
Output voltage of high pressure (Pd) sensor detected 0 or error value was

detected during stop of compressor.
Outdoor EEPROM error

(Center unit stops alarm and terminal unit continues operation.).

A3-IPDU

FAN

A3-IPDU

FAN

3 IPDU