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Check code
Location
of
detection
System status
Description
Error detection
condition(s)
Check items (locations)
Outdoor 7-segment display
Main
remote
controller
Check
code
Sub-code
I/F
00:
P05
P05
All stop
• Open phase is detected when
power is turned on.
• Inverter DC voltage is too high
(overvoltage) or too low
(undervoltage).
• Check for defect in outdoor
P.C. board (I/F).
• Check wiring of outdoor
power supply.
Detection of open
phase/phase
sequence
Indoor unit
Detected indoor
address
P10
P10
All stop
MG-CTT: Magnet contactor
• Float switch operates.
• Float switch circuit is open-
circuited or disconnected at
connector.
• Check float switch connector.
• Check operation of drain
pump.
• Check drain pump circuit.
• Check drain pipe for clogging.
• Check for defect in indoor
P.C. board.
Indoor overflow
error
Indoor unit
—
—
P12
Stop of
corresponding
unit
• Motor speed measurements
continuously deviate from
target value.
• Overcurrent protection is
activated.
• Check connection of fan
connector and wiring.
• Check for defect in fan motor.
• Check for defect in indoor
P.C. board.
• Check impact of outside air
treatment (OA).
Indoor fan motor
error
I/F
P13
—
P13
All stop
<During cooling operation>
When system is in cooling
operation, high pressure is
detected in follower unit that
has been turned off.
<During heating operation>
When system is in heating
operation, outdoor PMV 1 or
2 continuously registers
opening of 100p or less while
under SH control.
• Check full-close operation of
outdoor PMV (1, 2, 4).
• Check for defect in Pd or Ps
sensor.
• Check gas balancing circuit
(SV2) for clogging.
• Check balance pipe.
• Check SV3B circuit for
clogging.
• Check defect in outdoor
P.C. board (I/F).
• Check capillary of oil
separator oil return circuit for
clogging.
• Check for leakage of check
valve in discharge pipe
convergent section.
• Check 4-way valve error.
• Check TS1, TS2 sensors.
(TS1, TS2 miswiring and
mismounting)
Outdoor liquid
backflow
detection error
IPDU
I/F
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side
P07
P07
All stop
Temperature sensor built into
IGBT (TH) is overheated.
• Check power supply voltage.
• Check outdoor fan system
error.
• Check heat sink cooling duct
for clogging.
• Check IGBT and heat sink for
thermal performance for faulty
installation.
(e.g. mounting screws and
thermal conductivity)
• Check for defect in A3-IPDU.
(faulty IGBT built-in
temperature sensor (TH))
Heat sink
overheating error
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side
Inverter DC
voltage (Vdc) error
(compressor)
MG-CTT error
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...