Toshiba MMU-AP0152SH Service Manual page 32

9
TROUBLESHOOTING
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
Check code Wireless remote controller
Sensor block display
Main
Outdoor 7-segment display
AI-NET central
remote
controller control display
display Auxiliary code
Operation
¤
E01 — — —
¤
E02 — — —
¤
E03 — — 97
l
E04 — — 04
No. of indoor units in which
l
E06 E06 sensor has been normally 04
received
l
— E07 — —
¤
E08 E08 Duplicated indoor addresses 96
¤
E09 — — 99
¤
E10 — — CF
01: Indoor/Outdoor
communication
¤
E12 E12 42
02: Communication between
outdoor units
l
E15 E15 — 42
00: Capacity over l
E16 E16 89
~
01 :No. of connected units
¤
E18 — — 97, 99
l
00: Header is nothing
E19 E19 96
02: Two or more header units
01: Outdoor of other line
connected l
E20 E20 42
02: Indoor of other line
connected
l
E23 E23 — 15
l
E25 E25 — 15
No. of outdoor units which l
E26 E26 15
received signal normally
l
E28 E28 Detected outdoor unit number d2
01: IPDU1 error
02: IPDU2 error
03: IPDU1, 2 error
l
E31 E31 04: Fan IPDU error CF
05: IPDU + Fan IPDU error
06: IPDU2 + Fan IPDU error
07: All IPDU error
AI-NET : Artificial Intelligence.
IPDU : Intelligent Power Drive Unit
¡ l
¤
: 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 Judging device
of receiving unit
Timer Ready Flash
Communication error between indoor and
l l
remote controller Remote controller
(Detected at remote controller side)
l l
Remote controller transmission error Remote controller
l l Communication error between indoor and
remote controller (Detected at indoor side)
l Communication circuit error between indoor/
¤
outdoor (Detected at indoor side)
l
¤
Decrease of No. of indoor units
l Communication circuit error between indoor/
¤
outdoor (Detected at outdoor side)
l l
Duplicated indoor addresses
l l
Duplicated main remote controllers Remote controller
l l
Communication error between indoor MCU
l l
Automatic address start error
l
¤
Indoor is nothing during automatic addressing
l
¤
Capacity over / No. of connected indoor units
l l
Communication error between indoor units
l
¤
Outdoor header units quantity error
l Other line connected during automatic
¤
address
l Sending error in communication between
¤
outdoor units
l
¤
Duplicated follower outdoor addresses
l
¤
Decrease of No. of connected outdoor units
l
¤
Follower outdoor unit error
l
¤
IPDU communication error
Check code
Main
Outdoor 7-segment display
remote
controller
display Auxiliary code
F01 — —
F02 — —
F03 — —
F04 F04 —
F05 F05 —
F06 F06 —
F07 F07 —
F08 F08 —
F10 — —
F12 F12 —
01: Comp. 1 side
F13 F13
02: Comp. 2 side
F15 F15 —
F16 F16 —
F23 F23 —
F24 F24 —
F29 — —
F31 F31 —
01: Comp. 1 side
H01 H01
02: Comp. 2 side
01: Comp. 1 side
H02 H02
02: Comp. 2 side
Indoor
01: Comp. 1 side
H03 H03
02: Comp. 2 side
Indoor
H04 H04 —
H06 H06 —
I/F
H07 H07 —
01: TK1 sensor error
I/F
02: TK2 sensor error
H08 H08
03: TK3 sensor error
Indoor / I/F
04: TK4 sensor error
H14 H14 —
Indoor
01: TK1 oil circuit system error
02: TK2 oil circuit system error
H16 H16
03: TK3 oil circuit system error
04: TK4 oil circuit system error
I/F
L03 — —
I/F
L04 L04 —
I/F
L05 — —
Indoor
L06 L06 No. of indoor units with priority
I/F
L07 — —
L08 L08 —
I/F
L09 — —
L10 L10 —
I/F
L20 L20 —
I/F
L28 L28 —
I/F
01: IPDU1 error
02: IPDU2 error
03: IPDU3 error
I/F
L29 L29 04: Fan IPDU error
05: IPDU1 + Fan IPDU error
06: IPDU2 + Fan IPDU error
07: All IPDU error
I/F
L30 L30 Detected indoor address
— L31 —
Wireless remote controller
Sensor block display
Check code name
AI-NET central
of receiving unit
control display
Operation Timer Ready Flash
l
¤ ¤
0F ALT Indoor TCJ sensor error
l
¤ ¤
0d ALT Indoor TC2 sensor error
l
¤ ¤
93 ALT Indoor TC1 sensor error
¤ ¤ ¡
19 ALT TD1 sensor error
¤ ¤ ¡
A1 ALT TD2 sensor error
¡
¤ ¤
18 ALT TE1 sensor error
¤ ¤ ¡
18 ALT TL sensor error
¡
¤ ¤
1b ALT TO sensor error
l
¤ ¤
OC ALT Indoor TA sensor error
¡
¤ ¤
A2 ALT TS1 sensor error
¡
¤ ¤
43 ALT TH sensor error
¤ ¤ ¡
18 ALT Outdoor temp. sensor miscabling (TE, TL)
¤ ¤ ¡
43 ALT Outdoor pressure sensor miscabling (Pd, Ps)
¡
¤ ¤
43 ALT Ps sensor error
¤ ¤ ¡
43 ALT Pd sensor error
l
¤ ¤
12 SIM Indoor other error
¤ ¤ ¡
1C SIM Indoor EEPROM error
l l
¤
IF Compressor break down
Magnet switch error
l l
¤
1d Overcurrent relay operation
Compressor trouble (lock)
l l
¤
17 Current detect circuit system error
l l
¤
44 Comp 1 case thermo operation
l l
¤
20 Low pressure protective operation
l l
¤
d7 Oil level down detective protection
l l
d4 ¤
Oil level detective temp sensor error
l l
¤
44 Comp 2 case thermo operation
Oil level detective circuit error
l l
¤
d7 Magnet switch error
Overcurrent relay operation
l
¤ ¤
96 SIM Indoor center unit duplicated
¤ ¡ ¤
96 SIM Outdoor line address duplicated
l Duplicated indoor units with priority
¤ ¤
96 SIM
(Displayed in indoor unit with priority)
Duplicated indoor units with priority
l
¤ ¤
96 SIM (Displayed in unit other than indoor unit with
priority)
l
¤ ¤
99 SIM Group line in individual indoor unit
l
¤ ¤
99 SIM Indoor group/Address unset
l
¤ ¤
46 SIM Indoor capacity unset
¤ ¡ ¤
88 SIM Outdoor capacity unset
¡
¤ ¤
98 SIM Duplicated central control addresses
¤ ¡ ¤
46 SIM Over No. of connected outdoor units
¡
¤ ¤
CF SIM No. of IPDU error
¤ ¡ ¤
b6 SIM Indoor outside interlock
— — Extended I/C error
Judging device
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
Indoor
I/F
IPDU
MG-SW
Overcurrent relay
IPDU
IPDU
I/F
I/F
I/F
I/F
I/F
I/F
MG-SW
Overcurrent relay
Indoor
I/F
I/F
I/F
Indoor
Indoor, I/F
Indoor
I/F
AI-NET, Indoor
I/F
I/F
Indoor
I/F