106
OCH760
8-9. OUTDOOR UNIT FUNCTIONS
SW: setting
0....OFF
1....ON
No.
SW1
setting
Display mode
Display on the LED1, 2 (display data)
Notes
12345678
1
2
3
4
5
6
7
8
0
00000000
Relay output display
Compressor operation
52C
21S4
SV1
SV2
SV3
-
Always lighting
ON: light on OFF: light off
Check display
0000–9999 (Alternating display of addresses and check code)
•When abnormality occurs, check display
.
1
10000000
Indoor unit check status
No.1 unit check
No.2 unit check
No.3 unit check
No.4 unit check
No.5 unit check
No.6 unit check
No.7 unit check
No.8 unit check
Light on at time of abnormality
2
01000000
No.9 unit check
No.10 unit check
No.1
1 unit check
No.12 unit check
No.13 unit check
No.14 unit check
No.15 unit check
No.16 unit check
3
11000000
No.17 unit check
No.18 unit check
No.19 unit check
No.20 unit check
No.21 unit check
No.22 unit check
No.23 unit check
No.24 unit check
4
00100000
No.25 unit check
No.26 unit check
No.27 unit check
No.28 unit check
No.29 unit check
No.30 unit check
-
-
5
10100000
Protection input
High pressure abnormality
Superheat due
to low discharge
temperature
Compressor shell temperature abnormality
TH4 abnormality
TH3 abnormality
Outdoor fan rotation frequency abnormality
TH7 abnormality
TH8 abnormality
Display of detected microprocessor protection or abnormality
6
01
100000
Protection input
Heat sink
overheating
Compressor over current interception
Voltage abnormality
Insufficient refrigerant
amount abnormality
Current sensor/
primary current abnormality
63LS abnormality
63HS abnormality
start over current interception abnormality delay
7
11
100000
Protection input
Abnormality in the number of indoor units
Address double
setting abnormality
Indoor unit capacity error
Over capacity
Indoor unit address error
Outdoor unit address error
Current sensor
open/short
serial communication abnormality (outdoor unit)
8
00010000
Abnormality delay display 1
High pressure abnormality delay
Superheat due
to low discharge
temperature delay
Compressor shell temperature abnormality delay
TH4 abnormality
delay
TH3 abnormality delay
Outdoor fan rotation frequency abnormality delay
TH7 abnormality delay
TH8 abnormality
delay
Display of all abnormalities remaining in abnormality delay
9
10010000
Abnormality delay display 2
Heat sink
overheating delay
Compressor over current interception delay
Voltage abnormality delay
Insufficient refrigerant
amount abnormality delay
Current sensor/
primary current abnormality delay
63LS abnormality delay
63HS abnormality delay
start over current interception abnormality delay
10
01010000
Abnormality delay display 3
63LS abnormality delay
TH2 abnormality delay
4-way
valve
abnormalit
y
delay
Delay caused by closed valve in cooling mode
Power module
abnormality delay
TH6 abnormality delay
Current sensor
open/short delay
Delay of failure
in 12 VDC power
supply circuit on
power circuit board
11
11010000
Abnormality delay history 1
High pressure abnormality delay
Superheat due
to low discharge
temperature delay
Compressor shell temperature abnormality delay
TH4 abnormality
delay
TH3 abnormality delay
Outdoor fan rotation frequency abnormality delay
TH7 abnormality delay
TH8 abnormality
delay
Display of all abnormalities remaining in abnormality delay
12
001
10000
Abnormality delay history 2
Heat sink
overheating delay
Compressor over current interception delay
Voltage abnormality delay
Insufficient refrigerant
amount abnormality delay
Current sensor
/
primary current abnormality delay
63LS abnormality delay
63HS abnormality delay
start over current interception abnormality delay
13
101
10000
Abnormality delay history 3
63LS abnormality delay
TH2 abnormality delay
4-way valve
abnormality delay
Delay caused by closed valve in cooling mode
Power module
abnormality delay
TH6 abnormality delay
Current sensor
open/short delay
Delay of failure
in 12 VDC power
supply circuit on
power circuit board
14
01
110000
Abnormality code history 1
(the latest)
Alternating display of addresses
0000–9999 and abnormality codes
(including abnormality delay codes)
• Display of abnormalities up to present (including abnormality delays)
• History record in 1 is the
latest; records become older
in sequence; history record
in 10 is the oldest.
15
11
110000
Abnormality code history 2
16
00001000
Abnormality code history 3
17
10001000
Abnormality code history 4
18
01001000
Abnormality code history 5
19
11001000
Abnormality code history 6
20
00101000
Abnormality code history 7
21
10101000
Abnormality code history 8
22
01
101000
Abnormality code history 9
23
11
101000
Abnormality code history 10
(the oldest)
Delay code
Abnormality delay
Delay code
Abnormality delay
1202
Discharge/Comp. temperature
1601
Insufficient refrigerant
Thermistor <Compressor>(TH4)
1608
4-way valve disconnection
1205
Thermistor <Outdoor liquid pipe> (TH3)
4165
Power synchronization signal
121
1
Thermistor <Suction pipe> (TH6)
4310
Current sensor
1214
Thermistor <Heat sink> (TH8)
4320
Undervoltage
1221
Thermistor <Ambient> (TH7)
4330
Heat sink temperature
1222
Thermistor <HIC> (TH2)
4350
Power module
1400
Low pressure sensor
(Start) over current
1402
High pressure (63H)
Failure in 12 VDC power supply circuit on power circuit board
High pressure sensor (63HS)
4500
Outdoor fan motor
1600
Discharge superheat (SHd)
-
-
