Toshiba MMU-AP0184MH-E [92/219] Mg ctt magnet contactor

Toshiba MMU-AP0184MH-E [92/219] Mg ctt magnet contactor
91
MG-CTT: Magnet contactor
Check code
Location
of
detection
Description
System
status
Error detection
condition(s)
Check items (locations)
Main
remote
controller
Outdoor 7-segment display
AI-NET central
control
remote
controller
Check
code
Sub-code
P05 P05
SMMS (Series 1)
01: Open phase
detected
02: Phase
sequence error
I/F Open phase detected,
Phase sequence error
All stop Phase sequence
error was detected
when the power is
turned on.
Open phase error
was detected
when the power is
turned on.
Check the phase sequence of
outdoor power wiring.
Check the outdoor PC board
(I/F) error.
SMMS-i
(Series 4)
00:
AF
I/F Detection of open
phase / phase
sequence
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).
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side
Inverter DC voltage
(Vdc) error
(compressor)
MG-CTT error
P07 P07
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side
1C
IPDU
I/F
Heat sink overheating
error
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))
P10 P10
Detected indoor
address
0b
Indoor
unit
Indoor overflow error All stop 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.
P12 11
Indoor
unit
Indoor fan motor error 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).

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