Check Codes List - Toshiba MMY-MUP0961HT6P-UL Service Manual

8-4. Check Codes list

For other types of outdoor units, refer to their own service manuals.
Check code
Outdoor 7-segment display
Controller
Check
Sub-code
code
C05 —
C06 —
C12 —
E01 — —
E02 — —
E03 — —
E04 — —
Location
Description System status
of
detection
Central Central control Continued
control device operation
device transmission
trouble
Central Central control Continued
control device reception operation
device trouble
General- Batch alarm Continued
purpose for general- operation
device purpose
I/F device
control interface
Remote Indoor-remote
Stop of
controller controller corresponding
communication unit
trouble
(detected at
remote
controller end)
Remote Remote Stop of
controller controller corresponding
transmission unit
trouble
Indoor unit Indoor-remote Stop of
controller corresponding
communication unit
trouble
(detected at
indoor end)
Indoor unit Indoor-outdoor Stop of
communication corresponding
circuit trouble unit
(detected at
indoor end)
- 182 -
Check code detection
Check items (locations)
condition(s)
Central control device is • Check for failure in central
unable to transmit signal. control device.
• Check for failure in central
control communication line.
• Check termination
resistance setting.
Central control device is • Check for failure in central
unable to receive signal. control device.
• Check for failure in central
control communication line.
• Check terminator resistor
setting.
• Check power supply for
devices at other end of
central control
communication line.
• Check failure in P.C.
boards of devices at other
end of central control
communication line.
Trouble signal is input to • Check trouble input.
control interface for general-
purpose devices.
• Check remote controller
Communication between
indoor P.C. board and inter-unit tie cable (A/B).
remote controller is • Check for broken wire or
disrupted. connector bad contact.
• Check indoor power
supply.
• Check for failure in indoor
P.C. board.
• Check remote controller
address settings
(when two remote
controllers are in use).
• Check remote controller
P.C. board.
Signal cannot be transmitted • Check internal
from remote controller to transmission circuit of
remote controller.
indoor unit.
--- Replace remote
controller as necessary.
There is no communication • Check remote controller
from remote controller and network adaptor
(including wireless) or wiring.
network adaptor.
Indoor unit is not receiving • Check order in which
signal from outdoor unit. power was turned on for
indoor and outdoor units.
• Check indoor address
setting.
• Check indoor-outdoor tie
cable.
• Check outdoor terminator
resistor setting (SW100,
Bit 2).