![background image](http://html1.mh-extra.com/html/carrier/mmy-map0724ft6ul/mmy-map0724ft6ul_service-manual_2561391130.webp)
– 130 –
IPDU: Intelligent Power Drive Unit (Inverter P.C. board)
: Lighting, : Flashing, : Goes off
ALT.: Flashing is alternately when there are two flashing LED
SIM: Simultaneous flashing when there are two flashing LED
* Indicator light display of the receiving unit may be different from
those in the following table. (Wall type 3 series, etc.)
Check code
Display of receiving unit
Typical fault site
Indoor-remote controller periodic
communication error
E03
—
—
Communication from remote controller or network
adaptor has been lost (so has central control
communication).
Description of error
Outdoor 7-segment display
TCC-LINK
central control
or main remote
controller
display
Indicator light block
Sub-code
Flash
Ready
Timer
Operation
Periodic communication between indoor header
and follower units cannot be maintained.
E18
—
—
Error in periodic communication
between indoor header and
follower unit
Indoor-outdoor periodic
communication error
E04
—
—
Signals are not being received from outdoor unit.
Duplicated indoor group header
unit
L03
SIM
—
—
There is more than one header unit in group.
Indoor heat exchanger
temperature sensor (TCJ) error
Heat exchanger temperature sensor (TCJ) has
been open/short-circuited.
F01
ALT
—
—
Indoor heat exchanger
temperature sensor (TC2) error
Heat exchanger temperature sensor (TC2) has
been open/short-circuited.
F02
ALT
—
—
Indoor external error input
(interlock)
Unit shutdown has been caused by external error
input (CN80).
L30
SIM
L30
Detected indoor unit No.
Indoor heat exchanger
temperature sensor (TC1) error
Heat exchanger temperature sensor (TC1) has
been open/short-circuited.
F03
ALT
—
—
Ambient temperature sensor
(TA) error
Ambient temperature sensor (TA) has been open/
short-circuited.
F10
ALT
—
—
Outdoor unit model unmatched
error
In case that outdoor unit model is different
(Not corresponded)
L02
SIM
L02
—
Indoor EEPROM is abnormal (some other error may
be detected).
Connection of group control cable
to stand-alone indoor unit
There is at least one stand-alone indoor unit to
which group control cable is connected.
L07
SIM
—
—
F29
SIM
P.C. board or other indoor error
—
—
Address setting has not been performed for one or
more indoor units (also detected at outdoor unit end).
L08
SIM
Indoor group address not set
L08
—
Indoor AC fan error is detected (activation of fan
motor thermal relay).
P01
ALT
Indoor AC fan error
—
—
Indoor DC fan error (e.g. overcurrent or lock-up) is
detected.
P12
ALT
Indoor DC fan error
—
—
Follower unit cannot be operated due to header unit
alarm (E03/L03/L07/L08).
P31
ALT
Other indoor unit error
—
—
Capacity setting has not been performed for indoor
unit.
L09
SIM
Indoor capacity not set
—
—
Indoor inter-MCU communication
error
MCU communication between main controller and
motor microcontroller is faulty.
E10
—
—
Duplicated indoor address
E08
E08
Duplicated indoor address
Indoor unit detects address identical to its own.
Indoor overflow error
P10
P10
ALT
Detected indoor unit No.
Float switch has been activated.
Duplicated central control address
—
L20
SIM
—
There is duplication in central control address setting.
9-2. Troubleshooting Method
The remote controllers (main remote controller and central control remote controller) and the interface P.C.
board of an outdoor unit are provided with an LCD display (remote controller) or a 7-segment display (outdoor
interface P.C. board) to display operational status. Using this self-diagnosis feature, the fault site/faulty part may
be identified in the event of a fault by following the method described below.
The list below summarizes check codes detected by various devices. Analyze the check code according to
where it is displayed and work out the nature of the fault in consultation with the list.
• When investigating a fault on the basis of a display provided on the indoor remote controller or TCC-LINK
central control remote controller - See the “TCC-LINK remote control or main remote controller display”
section of the list.
• When investigating a fault on the basis of a display provided on an outdoor unit - See the “Outdoor 7-
segment display” section of the list.
• When investigating a fault on the basis of a wireless remote controller-controlled indoor unit - See the “Light
sensor indicator light block” section of the list.
List of Check Codes (Indoor Unit)
(Error detected by indoor unit)
Summary of Contents for MMY-MAP0724FT6UL
Page 35: ...35 3 5 Parts Layout in Outdoor Unit 072 type Model MMY MAP0724FT...
Page 36: ...36 096 120 type Model MMY MAP0964FT MAP1204FT...
Page 37: ...37 3 6 Parts Layout in Inverter Assembly 208 230V model MMY MAP0724FT9UL...
Page 38: ...38 208 230V model MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 39: ...39 460V model MMY MAP0724FT6UL...
Page 40: ...40 460V model MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 41: ...41 3 7 Outdoor Inverter print circuit board 3 7 1 Interface P C board MCC 1606...
Page 42: ...42 3 7 2 Inverter P C board for compressor MCC 1595 A3 IPDU For 208 230V model MMY MAP 4FT9UL...
Page 43: ...43 3 7 3 Inverter P C board for compressor MCC 1596 A3 IPDU For 460V model MMY MAP 4FT6UL...
Page 44: ...44 3 7 4 Inverter P C board for fan motor MCC 1610 FAN IPDU...
Page 45: ...45 3 7 5 Noise Filter P C board MCC 1608 A B For 208 230V model MMY MAP 4FT9UL...
Page 46: ...46 3 7 6 Noise Filter P C board MCC 1625 A B C For 460V model MMY MAP 4FT6UL...
Page 195: ...195...
Page 197: ...197...
Page 257: ...257 15 EXPLODED DIAGRAM PARTS LIST Outdoor unit 15 1 MMY MAP0724FT9UL...
Page 258: ...258 15 1 MMY MAP0724FT9UL...
Page 262: ...262 15 1 Inverter Assembly MMY MAP0724FT9UL...
Page 264: ...264 15 2 MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 265: ...265 15 2 MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 269: ...269 15 2 Inverter Assembly MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 271: ...271 15 3 MMY MAP0724FT6UL...
Page 272: ...272 15 3 MMY MAP0724FT6UL...
Page 276: ...276 15 3 Inverter Assembly MMY MAP0724FT6UL...
Page 278: ...278 15 4 MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 279: ...279 15 4 MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 283: ...283 15 4 Inverter Assembly MMY MAP0964FT6UL MMY MAP1204FT6UL...