Carrier TOSHIBA MML-UP0071H-UL Installation Manual page 21

Check code
Outdoor unit 7-segment display
Wired remote
control display
P17 P17
P18 P18
0#: 4-way valves
1#: 4-way valve1
P19 P19
2#: 4-way valve2
*Put in outdoor unit No. in [#] mark.
P20 P20
1 : Compressor 1 side
P22 P22
2 : Compressor 2 side
1 : Compressor P.C.board 1
P25 P25
2 : Compressor P.C.board 2
1 : Compressor 1 side
P26 P26
2 : Compressor 2 side
1 : Compressor 1 side
P29 P29
2 : Compressor 2 side
P31 —
• For details about check codes determined with an Interface P.C. board or an Inverter P.C. board, refer to the Installation Manual of the outdoor unit.
*1 Inverter quantity information
(SMMS-e, SMMS-u, SHRM-u)
Compressor Fan
Inverter Inverter
No.
1 2 1 2
01 Compressor 1
02 Compressor 2
03 Compressor 1 + Compressor 2
08 Fan1
09 Compressor 1 + Fan1
0A Compressor 2 + Fan1
0B Compressor 1 + Compressor 2 + Fan1
10 Fan2
11 Compressor 1 + Fan2
12 Compressor 2 + Fan2
13 Compressor 1 + Compressor 2 + Fan2
18 Fan1 + Fan2
19 Compressor 1 + Fan1 + Fan2
1A Compressor 2 + Fan1 + Fan2
1B All
: Inverter trouble
39-EN
Sensor block display of receiving unit
Auxiliary code Operation
—
—
—
—
Trouble
Wireless remote control
Timer Ready Flash
ALT Discharge temp. TD2 trouble
ALT Discharge temp. TD3 trouble
ALT 4-way valve inverse trouble
ALT High-pressure protective operation
ALT Outdoor unit fan inverter trouble
ALT (SMMS-u series or later) Compressor inverter P.C. board trouble
IPM short protection trouble
ALT
(SMMS-u series or later) Compressor start up trouble
ALT Compressor position detective circuit system trouble
Other indoor unit trouble
ALT
(Group follower indoor unit trouble)
– 20 –
Check code name Judging device
Compressor inverter
Compressor inverter
Compressor inverter
I/F
I/F
I/F
I/F
Fan inverter
Indoor unit
EN
40-EN