Toshiba Carrier MMD-AP0074SPH2UL Manuel D'installation page 20

Check codes and parts to be checked
Check method
On the remote control (Wired remote control, Central control remote control) and the interface P.C. board of the
outdoor unit (I/F), a check display LCD (Remote control) or 7-segment display (on the outdoor interface P.C. board)
to display the operation is provided. Therefore the operation status can be known. With 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.
• To check from indoor remote control: See "Wired remote control display" in the list.
• To check from outdoor unit: See "Outdoor 7-segment display" in the list.
• To check from indoor unit with a wireless remote control: See "Sensor block display of receiving unit" in the list.
Check code Wireless remote control
Sensor block display of
Outdoor 7-segment display
Wired remote
control display
Auxiliary code Operation Timer Ready Flash
E01 — —
E02 — —
E03 — —
E04 — —
No. of indoor units in which
E06 E06 sensor has been normally
received
— E07 —
E08 E08 Duplicated indoor addresses
E09 — —
E10 — —
01: Indoor / Outdoor
communication
E12 E12
02: Communication between
outdoor units
E15 E15 —
E16 00: Capacity over
E16
01 ~:No. of connected units
E18 — —
00: Header is nothing
E19 E19
02: Two or more header units
01: Outdoor of other line
E20 E20 connected
02: Indoor of other line connected
E23 E23 —
E25 E25 —
No. of outdoor units which
E26 E26
received signal normally
E28 E28 Detected outdoor unit number
37-EN
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.
Check code name
receiving unit
Communication error between indoor and remote
control
(Detected at remote control side)
Remote control transmission error
Communication error between indoor and remote
control (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 header remote controls
Communication error between indoor MCU
Automatic address start error
Indoor is nothing during automatic addressing
Capacity over / No. of connected indoor units
Combined capacity of indoor units exceeds 120 %
of combined capacity of outdoor 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
– 19 –
Check code
Outdoor 7-segment display
Wired remote
control display
Auxiliary code
01
02
03
04
05
06
07
E31 E31
08
09
0A
0B
0C
0D
0E
Judging device
0F
: IPDU error
Remote control
F01 —
Remote control
F02 —
F03 —
Indoor
F04 F04
Indoor
F05 F05
TE1 sensor
F06 F06
I/F
TE2 sensor
F07 F07
I/F
F08 F08
F10 —
Indoor / I/F
F12 F12
Remote control
01: Comp. 1 side
Indoor
F13 F13 02: Comp. 2 side
03: Comp. 3 side
I/F
F15 F15
F16 F16
I/F
F22 F22
F23 F23
I/F
F24 F24
Indoor
F29 —
F31 F31
I/F
01: Comp. 1 side
H01 H01 02: Comp. 2 side
I/F
03: Comp. 3 side
01: Comp. 1 side
H02 H02 02: Comp. 2 side
I/F
03: Comp. 3 side
I/F
01: Comp. 1 side
H03 H03 02: Comp. 2 side
I/F 03: Comp. 3 side
H05 H05
I/F
H06 H06
H07 H07
01: TK1 sensor error
02: TK2 sensor error
H08 H08
03: TK3 sensor error
04: TK4 sensor error
H15 H15
Wireless remote control
Sensor block display of
Check code name
receiving unit
Operation Timer Ready Flash
A3-IPDU
Fan
IPDU
1 2 3
IPDU communication error
— ALT Indoor TCJ sensor error
— ALT Indoor TC2 sensor error
— ALT Indoor TC1 sensor error
— ALT TD1 sensor error
— ALT TD2 sensor error
TE1 sensor error
ALT
TE2 sensor error
— ALT TL sensor error
— ALT TO sensor error
— ALT Indoor TA sensor error
— ALT TS1 sensor error
ALT TH sensor error
— ALT Outdoor temp. sensor miswiring (TE1, TL)
— ALT Outdoor pressure sensor miswiring (Pd, Ps)
— ALT TD3 error
— ALT Ps sensor error
— ALT Pd sensor error
— SIM Indoor other error
— SIM Indoor EEPROM error
Compressor break down
Compressor trouble (lock)
Current detect circuit system error
— TD1 miswiring
— Low pressure protective operation
— Oil level down detective protection
Oil level detective temp sensor error
— TD2 miswiring
Judging device
I/F
Indoor
Indoor
Indoor
I/F
I/F
I/F
I/F
I/F
Indoor
I/F
IPDU
I/F
I/F
I/F
I/F
I/F
Indoor
I/F
IPDU
IPDU
IPDU
I/F
I/F
I/F
I/F
I/F
38-EN