Toshiba MML-UP0071H-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 trouble 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 indoor unit with a wireless remote controller: See “Sensor block display of receiving unit” in the list.

: Lighting,  : Flashing,  : Goes off

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

Sensor block display of receiving unit

Auxiliary code

Operation

Timer

Ready

Flash

E01

—

—

Communication trouble between indoor unit and remote controller 

(Detected at remote controller side)

Remote controller

E02

—

—

Remote controller transmission trouble

Remote controller

E03

—

—

Communication trouble between indoor unit and remote controller 

(Detected at indoor unit side)

Indoor unit

E04

—

—

Communication circuit trouble between indoor / outdoor unit 

(Detected at indoor unit side)

Indoor unit

E06

E06

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

Decrease of No. of indoor units

I/F

—

E07

—

Communication circuit trouble between indoor / outdoor unit 

(Detected at outdoor unit side)

I/F

E08

E08

Duplicated indoor unit addresses

Duplicated indoor unit addresses

Indoor unit • I/F

E09

—

—

Duplicated master remote controllers

Remote controller

E10

—

—

Communication trouble between indoor unit MCU

Indoor unit

E11

—

—

Communication trouble between Application control kit and Indoor unit

Indoor unit

Application control kit

E12

E12

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

Automatic address start trouble

I/F

E15

E15

—

No indoor unit during automatic addressing

I/F

E16

E16

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

Capacity over / No. of connected indoor units

I/F

E18

—

—

Communication trouble between header and follower units Indoor unit

Indoor unit

E19

E19

00: Header is not detected
02: Two or more header units

Outdoor header units quantity trouble

I/F

E20

E20

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

Other line connected during automatic address

I/F

E23

E23

—

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

I/F

E25

E25

—

Duplicated follower outdoor addresses

I/F

E26

E26

No. of outdoor units which received signal normally

Decrease of No. of connected outdoor units

I/F

E28

E28

Detected outdoor unit number

Follower outdoor unit trouble

I/F

E31

E31

*1 Inverter quantity information

Inverter communication trouble

I/F

F01

—

—

ALT

Indoor unit TCJ sensor trouble

Indoor unit

F02

—

—

ALT

Indoor unit TC2 sensor trouble

Indoor unit

F03

—

—

ALT

Indoor unit TC1 sensor trouble

Indoor unit

F04

F04

—

ALT

TD1 sensor trouble

I/F

F05

F05

—

ALT

TD2 sensor trouble

I/F

43-EN

44-EN