Toshiba MML-AP0074NH-E Service Manual page 109
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Also See for MML-AP0074NH-E:
- Owner's manual (26 pages) ,
- Installation manual (32 pages) ,
- Owner's manual (268 pages)
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Check method
On the remote controller (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.
• 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 7-segment 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.
AI-NET: Artifi cial Intelligence.
IPDU: Intelligent Power Drive Unit
: Lighting,
ALT.: Flashing is alternately when there are two fl ashing LED.
SIM: Simultaneous fl ashing when there are two fl ashing LED.
Check code
Wireless remote controller
Wireless
Sensor block display of
Outdoor 7-segment display
remote
receiving unit
controller
display
Auxiliary code
OPERATION TIMER PRE.DEF.
E01
—
—
E02
—
—
E03
—
—
E04
—
—
No. of indoor units in which
E06
E06
sensor has been normally
received
—
E07
—
E08
E08 Duplited indoor addresses
E09
—
—
E10
—
—
01: Indoor/Outdoor
communication
E12
E12
02: Communication between
outdoor units
E15
E15
—
00: Capacity over
E16
E16
01 ~:No. of connected units
E18
—
—
00: Header is nothing
E19
E19
02: Two or more header units
01: Outdoor of other line
connected
E20
E20
02: Indoor of other line
connected
E22
E22
—
EN
FR
DE
IT
: Flashing,
: Goes off
ES
PT
Judging
Check code name
device
NL
Flash
Communication error between indoor
GR
Remote
and remote controller (Detected at
controller
remote controller side)
RU
Remote
Remote controller transmission error
controller
TR
Communication error between indoor
and remote controller (Detected at
Indoor
indoor side)
CS
Communication circuit error between
Indoor
indoor/outdoor (Detected at indoor side)
LV
Decrease of No. of indoor units
I/F
SK
Communication circuit error between
indoor/outdoor (Detected at outdoor
I/F
SI
side)
Duplicated indoor addresses
Indoor / I/F
Remote
Duplicated main remote controllers
controller
Communication error between indoor
Indoor
MCU
Automatic address start error
I/F
Indoor is nothing during automatic
I/F
addressing
Capacity over / No. of connected
I/F
indoor units
Communication error between indoor
Indoor
units
Outdoor header units quantity error
I/F
Other line connected during automatic
I/F
address
Reduction in number of heat storage
I/F
units
E23
E23
—
E25
E25
—
No. of outdoor units which
E26
E26
received signal normally
E28
E28 Detected outdoor unit number
E31
E31 Number of IPDU (*1)
F01
—
—
ALT
F02
—
—
ALT
F03
—
—
ALT
F04
F04
—
ALT
F05
F05
—
ALT
01: TE1 sensor
F06
F06
ALT
02: TE2 sensor
F07
F07
—
ALT
F08
F08
—
ALT
F10
—
—
ALT
F12
F12
—
ALT
01: Comp. 1 side
F13
F13
02: Comp. 2 side
ALT
03: Comp. 3 side
F15
F15
—
ALT
F16
F16
—
ALT
F22
F22
—
ALT
F23
F23
—
ALT
F24
F24
—
ALT
F29
—
—
SIM
F31
F31
—
SIM
01: Comp. 1 side
H01
H01
02: Comp. 2 side
03: Comp. 3 side
01: Comp. 1 side
H02
H02
02: Comp. 2 side
03: Comp. 3 side
01: Comp. 1 side
H03
H03
02: Comp. 2 side
03: Comp. 3 side
H04
H04
—
H06
H06
—
H07
H07
—
01: TK1 sensor error
02: TK2 sensor error
H08
H08
03: TK3 sensor error
04: TK4 sensor error
05: TK5 sensor error
H14
H14
—
H15
H15
—
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
05: TK5 oil circuit system error
H25
H25
—
Sending error in communication
I/F
between outdoor units
Duplicated follower outdoor addresses
I/F
Decrease of No. of connected outdoor
I/F
units
Follower outdoor unit error
I/F
IPDU communication error
I/F
Indoor TCJ sensor error
Indoor
Indoor TC2 sensor error
Indoor
Indoor TC1 sensor error
Indoor
TD1 sensor error
I/F
TD2 sensor error
I/F
TE1 sensor error
I/F
TE2 sensor error
TL sensor error
I/F
TO sensor error
I/F
Indoor TA sensor error
Indoor
TS1 sensor error
I/F
TH sensor error
IPDU
Outdoor temp. sensor miscabling (TE,
I/F
TL)
Outdoor pressure sensor miscabling
I/F
(Pd, Ps)
TD3 sensor error
I/F
Ps sensor error
I/F
Pd sensor error
I/F
Indoor other error
Indoor
Indoor EEPROM error
I/F
Compressor break down
IPDU
MG-SW
Magnet switch error
Overcurrent
Overcurrent relay operation
relay
Compressor trouble (lock)
IPDU
Current detect circuit system error
IPDU
Comp 1 case thermo operation
I/F
Low pressure protective operation
I/F
Oil level down detective protection
I/F
Oil level detective temp sensor error
I/F
Comp 2 case thermo operation
I/F
TD2 sensor miswiring
I/F
I/F
Oil level detective circuit error
MG-SW
Magnet switch error
Overcurrent
Overcurrent relay operation
relay
TD3 sensor miswiring
I/F
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