Toshiba MCY-MHP0404HS-E Service Manual page 117

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
*0: IGBT short
circuit
*1: Position
detection circuit
trouble
*3: Motor lockup
P22 P22
trouble
*4: Motor current
detection
*C: TH sensor
temperature
trouble
*D: TH sensor
short, open trouble
P26 P26 –
P29 P29 –
P31 – –
AMP Air Conditioning
Location
of Description System status
detection
IPDU Outdoor fan All stop
IPDU error
Put in Fan IPDU
No. in [*] mark
All stop
All stop
All stop
All stop
All stop
IPDU IGBT (IPM) All stop
short-circuit
protection trouble
IPDU Compressor All stop
position
detection circuit
error
Indoor Other indoor Stop of
unit trouble corresponding
(group follower unit
unit trouble)
Check code detection
condition(s)
(Sub code: *0)
Fan IPDU over current
protection circuit
Flow of current equal to or
greater than the specified
value is detected during
startup of the fan.
(Sub code: *1)
Fan IPDU position detection
circuit.
Position detection is not
going on normally.
(Sub code: *3)
Gusty wind, an obstruction, or
another external factor.
Speed estimation is not going
on normally.
(Sub code: *4)
Fan IPDU over current
protection circuit.
Flow of current equal to or
greater than the specified
value is detected during
operation of the fan
(Sub code: *C)
Higher temperature than the
specified value is detected
during operation of the fan.
(Sub code: *D)
The resistance value of the
sensor is infinite or zero
(open or short circuit)
Overcurrent is momentarily
detected during startup of
compressor.
Position detection is not
going on normally.
There is trouble in other indoor
unit in group, resulting in
detection of E07 / L07 / L03 /
L08.
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Check items (locations)
・Check fan motor.
・Check for trouble in fan
IPDU P.C. board.
・Check fan motor.
・Check connection of fan
motor connector.
・Check for trouble in fan
IPDU P.C. board.
・Check fan motor.
・Check for trouble in fan
IPDU P.C. board.
・Check fan motor.
・Check connection of fan
motor connector.
・Check for trouble in fan
IPDU P.C. board.
・Check fan motor.
・Check for trouble in fan
IPDU P.C. board.
・Check for trouble in fan
IPDU P.C. board.
Check connector
connection and wiring on
A3-IPDU P.C. board.
Check for trouble in
compressor (layer short-
circuit).
Check for defect in outdoor
P.C. board (A3-IPDU).
Check wiring and
connector connection.
Check for compressor
layer short-circuit.
Check for trouble in A3-
IPDU P.C. board.
Check indoor P.C. board.