Toshiba MMU-AP0071YH Installation Manual Download

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Check code

Main

remote

controller

display

E01

E02

E03

E04

E06

—

E08

E09

E10

E12

E15

E16

E18

E19

E20

E23

E25

E26

E28

E31

Outdoor 7-segment display

Auxiliary code

—

No. of indoor units in which

E06

sensor has been normally
received

E07

—

E08

Duplicated indoor addresses

—

01: Indoor/Outdoor

E12

communication

02: Communication between

outdoor units

E15

—

E16

00: Capacity over
01

:No. of connected units

—

E19

00: Header is nothing
02: Two or more header units

01: Outdoor of other line

E20

connected

02: Indoor of other line

connected

E23

—

E25

—

E26

No. of outdoor units which
received signal normally

E28

Detected outdoor unit number

01: IPDU1 error
02: IPDU2 error
03: IPDU1, 2 error

E31

04: Fan IPDU error
05: IPDU + Fan IPDU error
06: IPDU2 + Fan IPDU error
07: All IPDU error

AI-NET central

control display

—

97, 99

Wireless remote controller

Sensor block display

of receiving unit

Operation

Timer Ready Flash

Check code name

Communication error between indoor and
remote controller
(Detected at remote controller side)

Remote controller transmission error

Communication error between indoor and
remote controller (Detected at indoor side)

Communication circuit error between indoor/
outdoor (Detected at indoor side)

Decrease of No. of indoor units

Communication circuit error between indoor/
outdoor (Detected at outdoor side)

Duplicated indoor addresses

Duplicated main remote controllers

Communication error between indoor MCU

Automatic address start error

Indoor is nothing during automatic addressing

Capacity over / No. of connected indoor units

Communication error between indoor units

Outdoor header units quantity error

Other line connected during automatic
address

Sending error in communication between
outdoor units

Duplicated follower outdoor addresses

Decrease of No. of connected outdoor units

Follower outdoor unit error

IPDU communication error

Judging device

Remote controller

Indoor

I/F

Indoor / I/F

Remote controller

Indoor

I/F

Indoor

I/F

Check method

On the remote controller (Main remote controller, Central control remote controller) and the interface P.C. board of
the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C.
board) to display the operation is provided. Therefore the operation status can be known. Using this self-diagnosis
function, a trouble or position with error of the air conditioner can be found as shown in the table below.

Check code list

The following list shows each check code. Find the check contents from the list according to part to be checked.
• In case of check from indoor remote controller: See “Main remote controller display” in the list.
• In case of check from outdoor unit: See “Outdoor 7-segment display” in the list.
• In case of check from AI-NET central control remote controller: See “AI-NET central control display” in the list.
• In case of check from indoor unit with wireless remote controller: See “Sensor block display of receiving unit” in the list.

Terminology

AI-NET : Artificial Intelligence.
IPDU : Intelligent Power Drive Unit

: Lighting,

: Flashing,

: Goes off

ALT. : Flashing is alternately when there are two flashing LED.
SIM : Simultaneous flashing when there are two flashing LED.