Toshiba MMU-UP YHP-E Series Installation Manual page 23

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 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.
y In case of check from indoor remote controller: See "Wired remote controller display" in the list.
y In case of check from outdoor unit: See "Outdoor unit 7-segment display" in the list.
y In case of check from indoor unit with a wireless remote controller: See "Sensor block display of receiving unit" in the list.
Check code
Outdoor unit 7-segment display
Wired remote
controller display
E01 ─
E02 ─
E03 ─
E04 ─
E06 E06 No. of indoor units in which sensor has been normally received
─ E07
E08 E08 Duplicated indoor unit addresses
E09 ─
E10 ─
E11 ─
01: Indoor / Outdoor units communication
E12 E12
02: Outdoor / Outdoor units communication
E15 E15
00: Capacity over
E16 E16
01: No. of connected units
E17 ─
E18 ─
00: Header is not detected
E19 E19
02: Two or more header units
01: Outdoor unit of other line connected
E20 E20
02: Indoor unit of other line connected
E23 E23
E25 E25
E26 E26 No. of outdoor units which received signal normally
E28 E28 Detected outdoor unit number
E31 E31 *1 Inverter quantity information
F01 ─
F02 ─
F03 ─
43-EN
Wireless remote controller
Sensor block display of receiving unit
Auxiliary code Operation
─
─
─
─
─
─
─
─
─
─
─
─
─
─
─
─
Timer Ready Flash
Communication trouble between indoor unit and remote controller
(Detected at remote controller side)
Remote controller transmission trouble
Communication trouble between indoor unit and remote controller
(Detected at indoor unit side)
Communication circuit trouble between indoor / outdoor unit
(Detected at indoor unit side)
Decrease of No. of indoor units
Communication circuit trouble between indoor / outdoor unit
(Detected at outdoor unit side)
Duplicated indoor unit addresses
Duplicated master remote controllers
Communication trouble between indoor unit MCU
Communication trouble between Application control kit and indoor unit
Automatic address start trouble
No indoor unit during automatic addressing
Capacity over / No. of connected indoor units
Communication trouble between indoor unit and Flow Selector unit
Communication trouble between header and follower units
Outdoor header units quantity trouble
Other line connected during automatic address
Sending trouble in communication between outdoor units
Trouble in number of heat storage units (trouble with reception)
Duplicated follower outdoor addresses
Decrease of No. of connected outdoor units
Follower outdoor unit trouble
Inverter communication trouble
ALT Indoor unit TCJ sensor trouble
ALT Indoor unit TC2 sensor trouble
ALT Indoor unit TC1 sensor trouble
– 22 –
: Lighting,
ALT: Flashing is alternately when there are two flashing LED.
SIM: Simultaneous flashing when there are two flashing LED.
Check code name
: Flashing, : Goes off
I/F: Interface P.C. Board
Judging device
Remote controller
Remote controller
Indoor unit
Indoor unit
I/F
I/F
Indoor unit • I/F
Remote controller
Indoor unit
Indoor unit
Application control kit
I/F
I/F
I/F
Indoor unit
Indoor unit
I/F
I/F
I/F
I/F
I/F
I/F
I/F
Indoor unit
Indoor unit
Indoor unit
44-EN