Toshiba MiNi-SMMS MCY-MAP0501HT Service Manual page 117

Check code
Wired Outdoor 7-segment display
remote
controller Check code Auxiliary code
E12 E12 01: Indoor/outdoor
communication
02: Between outdoors
communication
E15 E15 —
E16 E16 00: Capacity over
01 to: No. of connected units
E18 — —
E19 E19 00: No header unit
02: Two or more header units
E20 E20 01: Connection of outdoor of
other line
02: Connection of indoor of
other line
E23 E23 —
E25 E25 —
E31 E31 01: Comp IPDU error
02: Fan 1 IPDU error
03: Comp + Fan 1 IPDU error
04: Fan 2 IPDU error
05: Comp + Fan 2 IPDU error
06: Fan 1 + Fan 2 IPDU error
07: All IPDU error or
communication error
between IPDU and I/F P .C.
board or outdoor I/F P .C.
board error
Detected
AI-NET
Check code name
position
central control
remote controller
42 I/F Automatic address
start error
42 I/F No corresponding
indoor unit during
automatic address
89 I/F No. of connected
indoor units / Capacity
over
97, 99 Indoor Communication error
unit between indoor header
and follower units
96 I/F Outdoor unit quantity
error
42 I/F Other line unit
connected during
automatic address
15 I/F Communication
sending error between
outdoor units
15 I/F Duplicated outdoor
follower address setup
CF I/F IPDU communication
error
Status Error detection condition
All stop • When indoor automatic address started, other
refrigerant circuit system was setting automatic address.
• When outdoor automatic address started, indoor
automatic address was executed.
All stop Indoor unit is not found when indoor automatic address
start was set up.
All stop • Total capacity of indoor units exceeded 135% of total
outdoor capacity.
• No. of connected indoor units are more than 48 units.
[Note]
If this code appears after backup setup of outdoor unit
trouble, set up "No. capacity-over detection".
Setup method of "No. capacity-over detection"
Turn on SW09/Bit 2 on I/F P .C. board of outdoor header
unit.
Corresponding Regular communication between indoor header and
unit only stops. follower units
All stop • There are multiple outdoor units in 1 line.
• There is none of outdoor unit in 1 line.
All stop Unit of other line was connected when indoor automatic
address started.
All stop Transmission of other outdoor unit was unavailable for 30
seconds or more.
All stop Outdoor addresses manually set up are duplicated.
All stop Communication of each IPDU (P .C. board) in inverter box
interrupted.
Check item (position)
• Setup the address again after disconnecting
communication connection with other refrigerant circuit
system.
• Check the communication line connection between
indoor and outdoor.
• Check the electric power line error in indoor.
• Check the noise of surrounding devices.
• Power failure
• Check indoor P .C. board error.
• Check the connection capacity of indoor unit.
• Check the HP capacity of indoor unit.
• Check the indoor/outdoor capacity setup
• Check the No. of connected indoor units.
• Check the outdoor I/F P .C. board error
• Check cable of the remote controller.
• Check power cabling of indoor.
• Check P .C. board of indoor.
The outdoor unit connected with communication cable
between indoor and outdoor (U1.U2) is the outdoor unit.
• Check connection of communication line between
indoor and outdoor.
• Check outdoor P .C. board(I/F) error.
Separate the cable between lines according to automatic
address setup method in "Address setup".
In this model, only one outdoor unit is provided to one
refrigerant line. Be sure to check there is no
communication connection with outdoor unit in the other
refrigerant line.
Note)
Do not set up the outdoor address manually.
• Check connection of communication connector and
disconnection between IPDU and I/F P .C. board.
• Check outdoor P .C. board (I/F, IPDU, Fan IPDU) error.
• Check external noise.