Toshiba MMD-AP0076BHPUL Service Manual page 79

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
SMMS-i
(Series 4)
∗
0 : IGBT circuit
∗
1 : Position
detection circuit
error
∗
3 : Motor lockup
error
∗
4 : Motor current
detection
∗
C : TH sensor
temperature
error
∗
D : TH sensor
error
∗
E : Inverter DC
voltage error
(outdoor fan)
Note:
Although
letters 0 to F
P22 P22
appear at
locations
indicated by
∗ "
" , please
ignore them.
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
P26 P26
3 side
01: Compressor
1 side
02: Compressor
P29 P29
2 side
03: Compressor
3 side
P31
Location
Description System status
of
detection
IPDU Outdoor fan All stop
IPDU error
All stop
All stop
All stop
All stop
All stop
All stop
IPDU G-TR shortcircuit All stop
protection
error
IPDU Compressor All stop
position
detection circuit
error
Indoor Other indoor Stop of
unit error corresponding
(group follower unit
unit error)
- 79 -
Error detection
Check items (locations)
condition(s)
∗
Check fan motor.
(Sub code: 0 )
Check for defect in fan
Fan IPDU over current
IPDU P.C. board.
protection circuit
Flow of current equal to or
greater than the specified
value is detected during
startup of the fan.
∗
Check fan motor.
(Sub code: 1 )
Fan IPDU position detection Check connection of fan
motor connector.
circuit
Position detection is not Check for defect in fan
going on normally. IPDU P.C. board.
∗
Check fan motor.
(Sub code: 3 )
Check for defect in fan
Gusty wind, an obstruction,
IPDU P.C. board.
or another external factor
Speed estimation is not
going on normally.
∗
Check fan motor.
(Sub code: 4 )
Check connection of fan
Fan IPDU over current
motor connector.
protection circuit
Flow of current equal to or Check for defect 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 defect in fan
Higher temperature than the
IPDU P.C. board.
specified value is detected
during operation of the fan.
∗
Check for defect in fan
(Sub code: D )
IPDU P.C. board.
The resistance value of the
sensor is infinite or zero
(open or short circuit).
∗
Check power voltage of
(Sub code: E )
the main power supply.
Fan IPDU DC voltage
protection circuit
Check for defect in fan
The DC voltage higher or
IPDU P.C. board.
lower than the specified
Check connection of fan
value is detected.
IPDU P.C. board.
Overcurrent is momentarily Check connector
connection and wiring on
detected during startup of
compressor. A3-IPDU P.C. board.
Check for defect in
compressor (layer short-
circuit).
Check for defect in
outdoor P.C. board (A3-
IPDU).
Position detection is not Check wiring and
connector connection.
going on normally.
Check for compressor
layer short-circuit.
Check for defect in A3-
IPDU P.C. board.
There is error in other indoor Check indoor P.C. board.
unit in group, resulting in
detection of E07/L07/L03/
L08.