Toshiba Carrier TCB-IFDMR01UP-UL Guide page 21

Output Name
DO1 Operating Output
DO2 Alarm Active Digital Output
DO3 Fan Motor Active
Digital Output
DO4 Defrost Mode Digital Output
DO5 DO_1 Digital Output 1
(User Defined)
DO6 DO_2 Digital Output 2
(User Defined)
Set with the SW503 or SW504 switch on the control P.C. Board MCC-1777.
Description
Displayed when the system starts operation (output with both
thermostat ON / OFF)
During Alarm operation, Alarm Active Digital Output is active.
A fan control signal is output. It is usually the ON output at
the time of operating, but it is the OFF output in defrosting.
During Defrost operation, Defrost Mode Output is active.
Output function set using rotary switch "SW503" on the
DDC(0-10 V) interface P.C. Board (MCC-1777)
SW503 Output function
Outdoor unit(s) operation level is lower than capacity
1
command
Outdoor unit(s) operation level is higher than capacity
2
command
3 Cooling oil recovery/Heating refrigerant recovery control
4 Cooling operation output or Secondary heating output
5 Heating operation output
6 Thermostat ON
7 ~ 15 Do not use
Under Hz upper limit regulation due to heat sink
16
overheating
Output function set using rotary switch "SW504" on the
DDC(0-10 V) interface P.C. Board (MCC-1777)
SW504 Output function
Outdoor unit(s) operation level is lower than capacity
1
command
Outdoor unit(s) operation level is higher than capacity
2
command
3 Cooling oil recovery/Heating refrigerant recovery control
4 Cooling operation output or Secondary heating output
5 Heating operation output
6 Thermostat ON
7 ~ 15 Do not use
Under Hz upper limit regulation due to heat sink
16
overheating
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✓ : Available ✕ : Prohibition
TA DDC TF
✓ ✓ ✓
✓ ✓ ✓
✓ ✓ ✓
✓ ✓ ✓
✓ ✓ ✓
✓ ✓ ✓
SW503
SW504
EN