Toshiba MCY-MHP0404HS(J)-E Service Manual page 117

Check code
Location
Outdoor 7-segment display
Main
remote detection
Check
Sub-code
controller
code
*0: IGBT short IPDU
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
IPDU
P26 P26 –
IPDU
P29 P29 –
Indoor
unit
P31 – –
of Description System status
Outdoor fan All stop
IPDU error
Put in Fan IPDU
No. in [*] mark
All stop
All stop
All stop
All stop
All stop
IGBT (IPM) All stop
short-circuit
protection trouble
Compressor All stop
position
detection circuit
error
Other indoor Stop of
trouble corresponding
(group follower unit
unit trouble)
116
126
Check code detection
Check items (locations)
condition(s)
(Sub code: *0)
・Check fan motor.
Fan IPDU over current
・Check for trouble in fan
protection circuit
IPDU P.C. board.
Flow of current equal to or
greater than the specified
value is detected during
startup of the fan.
(Sub code: *1)
・Check fan motor.
Fan IPDU position detection
・Check connection of fan
circuit. motor connector.
Position detection is not ・Check for trouble in fan
going on normally. IPDU P.C. board.
(Sub code: *3) ・Check fan motor.
Gusty wind, an obstruction, or ・Check for trouble in fan
another external factor. IPDU P.C. board.
Speed estimation is not going
on normally.
(Sub code: *4) ・Check fan motor.
Fan IPDU over current ・Check connection of fan
protection circuit. motor connector.
Flow of current equal to or ・Check for trouble in fan
greater than the specified
IPDU P.C. board.
value is detected during
operation of the fan
・Check fan motor.
(Sub code: *C)
・Check for trouble in fan
Higher temperature than the
IPDU P.C. board.
specified value is detected
during operation of the fan.
(Sub code: *D) ・Check for trouble in fan
The resistance value of the IPDU P.C. board.
sensor is infinite or zero
(open or short circuit)
Overcurrent is momentarily Check connector
detected during startup of connection and wiring on
compressor. A3-IPDU P.C. board.
Check for trouble in
compressor (layer short-
circuit).
Check for defect in outdoor
P.C. board (A3-IPDU).
Position detection is not Check wiring and
going on normally. connector connection.
Check for compressor
layer short-circuit.
Check for trouble in A3-
IPDU P.C. board.
There is trouble in other indoor Check indoor P.C. board.
unit in group, resulting in
detection of E07 / L07 / L03 /
L08.