Toshiba MMF-AP0156H-E (TR) Service Manual page 70

Check code
Outdoor 7-segment display
Main
remote
Check
controller
Sub-code
code
SMMS-i
(4 series)
01: TK1 oil
circuit error
02: TK2 oil
circuit error
03: TK3 oil
circuit error
04: TK4 oil
circuit error
05: TK5 oil
circuit error
H16 H16
H25 H25 —
L02 L02 —
L03 — —
L04 L04 —
L05 — —
No. of priority
indoor units
L06 L06
L07 — —
L08 L08 —
L09 — —
L10 L10 —
Target indoor
address
L17 L17
Location
of
Description
detection
I/F Oil level detection All stop
circuit error
I/F TD3 sensor All stop
miswiring
(incomplete
insertion)
Indoor unit Outdoor unit Only the target
model mismatch unit stopped
error
Indoor unit Duplicated indoor Stop of
header unit corresponding unit
I/F Duplicated All stop
outdoor line
address
I/F Duplicated priority All stop
indoor unit (as
displayed on
priority indoor unit)
I/F Duplicated priority All stop
indoor unit (as
displayed on
indoor unit other
than priority indoor
unit)
Indoor unit Connection of Stop of
group control corresponding unit
cable to
standalone indoor
unit
Indoor unit Indoor group / Stop of
addresses not set corresponding unit
Indoor unit Indoor capacity Stop of
not set corresponding unit
I/F Outdoor capacity All stop
not set
I/F Outdoor unit
model mismatch
error
Error detection
System status
condition(s)
No temperature change is
detected by TK4 despite
compressor having been
started.
No temperature change is
detected by TK5 despite
compressor having been
started.
Air discharge temperature
(TD3) does not increase
despite compressor 3 being in
operation.
An error was found on the
outdoor unit model.
There is more than one
header unit in group.
There is duplication in line
address setting for outdoor
units belonging to different
refrigerant piping systems.
More than one indoor unit has
been set up as priority indoor
unit.
More than one indoor unit
have been set up as priority
indoor unit.
There is at least one stand-
alone indoor unit to which
group control cable is
connected.
Address setting has not been
performed for indoor units.
Capacity setting has not been
performed for indoor unit.
Jumper wire provided on P.C.
board for servicing I/F P.C.
board has not been removed
as required for given model.
The outdoor unit model is
duplicate. The Cool/Heat
Flex series 1/2 are duplicate.
– 70 –
Check items (locations)
• Check for disconnection of TK4
sensor.
• Check resistance characteristics of
TK4 sensor.
• Check for connection error involving
TK1, TK2, TK3, TK4, and TK5
sensors
• Check for faulty operation in SV3E
or SV3F valve.
• Check for clogging in oil equalizing
circuit capillary and faulty operation
in check valve.
• Check for refrigerant entrapment
inside compressor.
• Check for disconnection of TK5
sensor.
• Check resistance characteristics of
TK5 sensor.
• Check for connection error involving
TK1, TK2, TK3, TK4, and TK5
sensors
• Check for faulty operation in SV3E
valve.
• Check for clogging in oil equalizing
circuit capillary and faulty operation
in check valve.
• Check for refrigerant entrapment
inside compressor.
• Check installation of TD3 sensor.
• Check connection of TD3 sensor
connector and wiring.
• Check resistance characteristics of
TD3 sensor.
• Check for defect in outdoor P.C.
board (I/F).
• Check the model name of the
outdoor unit.
• Check the miswiring of the
communication line between indoor
and outdoor.
• Check indoor addresses.
• Check for any change made to
remote controller connection
(group / individual) since indoor
address setting.
• Check line addresses.
• Check display on priority indoor unit.
• Check displays on priority indoor
unit and outdoor unit.
• Check indoor addresses.
• Check indoor addresses.
Note:
This code is displayed when
power is turned on for the first
time after installation.
Set indoor capacity. (DN = 11)
Check model setting of P.C. board for
servicing outdoor I/F P.C. board.
• Check the outdoor unit model.