Toshiba MMD-AP0076BH-E, Installation Manual

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Check method

On the wired 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 following table.

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 “Wired remote controller display” in the list.
• In case of check from outdoor unit: See “Outdoor unit 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 a wireless remote controller: See “Sensor block display of receiving unit” in the list.

: Lighting, 

: Flashing, 

: Goes off

AI-NET: Artificial Intelligence

IPDU: Intelligent Power Drive Unit

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

SIM: Simultaneous flashing when there are two flashing LED.

Check code

Wireless remote controller

Check code name

Judging device

Wired remote 

controller display

Outdoor unit 7-segment display

AI-NET central 

control display

Sensor block display of receiving unit

Auxiliary code

Operation

Timer

Ready

Flash

E01

—

—

—

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

Remote controller

E02

—

—

—

Remote controller transmission error

Remote controller

E03

—

—

97

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

Indoor unit

E04

—

—

04

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

Indoor unit

E06

E06

No. of indoor units in which sensor has been 
normally received

04

Decrease of No. of indoor units

I/F

—

E07

—

—

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

I/F

E08

E08

Duplicated indoor unit addresses

96

Duplicated indoor unit addresses

Indoor unit • I/F

E09

—

—

99

Duplicated master remote controllers

Remote controller

E10

—

—

CF

Communication error between indoor unit MC

Indoor unit

E12

E12

01:Indoor/Outdoor units communication
02:Outdoor/Outdoor units communication

42

Automatic address start error

I/F

E15

E15

—

42

No indoor unit during automatic addressing

I/F

E16

E16

00:Capacity over
01 ~:No. of connected units

89

Capacity over / No. of connected indoor units

I/F

E18

—

—

97, 99

Communication error between header and follower units Indoor unit

Indoor unit

E19

E19

00:No header
02:Two or more header units

96

Outdoor header units quantity error

I/F

E20

E20

01:Outdoor unit of other line connected
02:Indoor unit of other line connected

42

Other line connected during automatic address

I/F

E21

E21

02:No header unit
00:Multiple number of header units

42

Error in number of heat storage master units

I/F

E22

E22

—

42

Reduction in number of heat storage units

I/F

E23

E23

—

15

Sending error in communication between outdoor units
Error in number of heat storage units (trouble with reception)

I/F

E25

E25

—

15

Duplicated follower outdoor addresses

I/F

E26

E26

No. of outdoor units which received signal 
normally

15

Decrease of No. of connected outdoor units

I/F

E28

E28

Detected outdoor unit number

d2

Follower outdoor unit error

I/F

E31

E31

Number of IPDU (*1)

CF

IPDU communication error

I/F

39-EN

40-EN