Mitsubishi Electric MXZ-SM72TAM-U1 Service Manual page 106

8-10. Outdoor unit information display
SW1 Contents
setting
No. 12345678
0 00000000 Relay output (at
normal state)
Error code (at
abnormal state)
1 10000000 Indoor unit check
status
2 01000000
3 11000000
4 00100000
5 10100000 Protection input
6 01100000 Protection input
7 11100000 Protection input
8 00010000 Abnormality delay
display 1
9 10010000 Abnormality delay
display 2
10 01010000 Abnormality delay
display 3
11 11010000 Abnormality delay
history 1
12 00110000 Abnormality delay
history 2
13 10110000 Abnormality delay
history 3
OCH800A_106
1 2 3
Compressor 52C 21S4
operation
0000–9999 (Alternating display of addresses and error code)
Note: When abnormality occurs, check display.
No.1 unit No.2 unit No.3 unit
check check check
No.9 unit No.10 unit No.11 unit
check check check
No.17 unit No.18 unit No.19 unit
check check check
No.25 unit No.26 unit No.27 unit
check check check
Note: Light on at time of abnormality
High pressure Superheat Compressor
abnormality due to low shell tem-
discharge perature
temperature abnormality
Note: Display detected microprocessor protection or abnormality
Heat sink Compressor Voltage
overheating over current abnormality
interception
Note: Display detected microprocessor protection or abnormality
Abnormality Address Indoor unit
in the number double setting capacity error
of indoor units abnormality
Note: Display detected microprocessor protection or abnormality
High pressure Superheat Compressor
abnormality due to low shell tem-
delay discharge perature
temperature abnormality
delay delay
Note: Display all abnormalities remaining in abnormality delay
Heat sink Compressor Voltage
overheating over current abnormality
delay interception delay
delay
Note: Display all abnormalities remaining in abnormality delay
63LS TH2 abnor- 4-way valve
abnormality mality delay abnormality
delay delay
Note: Display all abnormalities remaining in abnormality delay
High pressure Superheat Compressor
abnormality due to low shell tem-
delay discharge perature
temperature abnormality
delay delay
Note: Display all abnormalities remaining in abnormality delay
Heat sink Compressor Voltage
overheating over current abnormality
delay interception delay
delay
Note: Display all abnormalities remaining in abnormality delay
63LS TH2 abnor- 4-way valve
abnormality mality delay abnormality
delay delay
Note: Display all abnormalities remaining in abnormality delay
LED1, 2
4 5 6
SV1 SV2 SV3
No.4 unit No.5 unit No.6 unit
check check check
No.12 unit No.13 unit No.14 unit
check check check
No.20 unit No.21 unit No.22 unit
check check check
No.28 unit No.29 unit No.30 unit
check check check
TH4 abnor- TH3 abnor- Outdoor fan
mality mality rotation
frequency
abnormality
Insufficient Current 63LS
refrigerant sensor/ abnormality
amount primary
abnormality current abnor-
mality
Over capacity Indoor unit Outdoor unit
address error address error
TH4 abnor- TH3 abnor- Outdoor fan
mality delay mality delay rotation
frequency
abnormality
delay
Insufficient Current 63LS
refrigerant sensor/ abnormality
amount primary delay
abnormality current abnor-
delay mality delay
Delay caused Power TH6 abnor-
by closed module mality delay
valve in abnormality
cooling mode delay
TH4 abnor- TH3 abnor- Outdoor fan
mality delay mality delay rotation
frequency
abnormality
delay
Insufficient Current 63LS
refrigerant sensor/ abnormality
amount primary delay
abnormality current abnor-
delay mality delay
Delay caused Power TH6 abnor-
by closed module mality delay
valve in abnormality
cooling mode delay
SW: setting
0: OFF
1: ON
7 8
Always
—
lighting
No.7 unit No.8 unit
check check
No.15 unit No.16 unit
check check
No.23 unit No.24 unit
check check
— —
TH7 abnor- TH8 abnor-
mality mality
63HS start over
abnormality current
interception
abnormality
delay
Current Serial
sensor open/ communica-
short tion abnor-
mality
(outdoor unit)
TH7 abnor- TH8 abnor-
mality delay mality delay
63HS start over
abnormality current
delay interception
abnormality
delay
Current Delay of
sensor open/ failure in 12 V
short delay DC power
supply circuit
on power
circuit board
TH7 abnor- TH8 abnor-
mality delay mality delay
63HS start over
abnormality current
delay interception
abnormality
delay
Current Delay of
sensor open/ failure in 12 V
short delay DC power
supply circuit
on power
circuit board