Carrier MMY-MAP0724FT9UL Service Manual page 152

Check code
Main Outdoor 7-segment display
remote
Check Sub-code
controller
code
01: Compressor
1 side
02: Compressor
P26 P26
2 side
03: Compressor
3 side
01: Compressor
1 side
02: Compressor
P29 P29
2 side
03: Compressor
3 side
P31 — —
Errors Detected by TCC-LINK Central Control Device
Check code
Main Outdoor 7-segment display
remote
Check Sub-code
controller
code
C05 —
C06 —
C12 —
Differs according to nature
of alarm-causing error
P30
(L20 displayed.)
Location
of
Description
detection
IPDU G-TR short-circuit
protection error
IPDU Compressor
position detection
circuit error
Indoor unit Other indoor error
(group follower
unit error)
Location
of
Description
detection
TCC-LINK TCC-LINK central
control device
transmission error
TCC-LINK
central control
device reception
error
General- Blanket alarm
purpose for general-
device I/F purpose device
control interface
TCC-LINK Group control
follower unit error
Duplicated
central control
address
Error detection
System status
condition(s)
All stop Overcurrent is momentarily
detected during startup of
compressor.
All stop Position detection is not going
on normally.
Stop of There is error in other indoor
corresponding unit in group, resulting in
unit detection of E07/L07/L03/L08.
Error detection
System status
condition(s)
Continued Central control device is unable
operation to transmit signal.
Continued Central control device is unable
operation to receive signal.
Continued Error signal is input to control
operation interface for general-purpose
devices.
Continued Error occurs in follower unit
operation under group control.
([P30] is displayed on central
control remote controller.)
Continued There is duplication in central
operation control addresses.
– 152 –
Check items (locations)
• Check connector connection
and wiring on A3-IPDU P.C.
board.
• Check for defect in
compressor (layer shortcircuit).
• Check for defect in outdoor
P.C. board (A3-IPDU).
• Check wiring and connector
connection.
• Check for compressor layer
short-circuit.
• Check for defect in A3-IPDU
P.C. board.
• Check indoor P.C. board.
Check items (locations)
• Check for defect in central
control device.
• Check for defect in central
control communication line.
• Check termination resistance
setting.
• Check for defect in central
control device.
• Check for defect in central
control communication line.
• Check termination resistance
setting.
• Check power supply for
devices at other end of central
control communication line.
• Check defect in P.C. boards
of devices at other end of
central control communication
line.
• Check error input.
• Check check code of unit
that has generated alarm.
• Check address settings.