MXZ-SM48NAMHZ Service Manual

126
OCH789
8-10. 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) Always lighting ON: light on OFF: light o󰀨
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 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 detected microprocessor protection or abnormality
3 11000000 Protection input
Heat sink overheating
Compressor over current interception
Voltage abnormality
Insu󰀩cient refrigerant amount abnormality
Current sensor/ primary current abnormality
63LS abnormality
63HS abnormality
start over current interception abnormality delay
4 00100000 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)
5 10100000
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 all abnormalities remaining in abnormality delay
6 01100000
Abnormality delay display 2
Heat sink overheating delay
Compressor over current interception delay
Voltage abnormality delay
Insu󰀩cient refrigerant amount abnormality delay
Current sensor/ primary current abnormality delay
63LS abnormality delay
63HS abnormality delay
start over current interception abnormality delay
7 11100000
Abnormality delay display 3
63LS abnormality delay
TH2 abnormality delay
4-way valve abnormality delay
Delay caused by blocked valve in cooling mode
Power module abnormality delay
TH6 abnormality delay
Current sensor open/short delay
8 00010000
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 all abnormalities remaining in abnormality delay
9 10010000
Abnormality delay history 2
Heat sink overheating delay
Compressor over current interception delay
Voltage abnormality delay
Insu󰀩cient 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 history 3
63LS abnormality delay
TH2 abnormality delay
4-way valve abnormality delay
Delay caused by blocked valve in cooling mode
Power module abnormality delay
TH6 abnormality delay
Current sensor open/short delay
11 11010000
Abnormality code history 1 (the latest)
Alternating display of addresses 0000–9999 and abnormality code (including abnormality delay code)
• Display abnormalities up to present (including abnormality terminals) • History record in 1 is the latest; records become older in sequence; history record in 10 is the oldest.
12 00110000
Abnormality code history 2
13 10110000
Abnormality code history 3
14 01110000
Abnormality code history 4
15 11110000
Abnormality code history 5
16 00001000
Abnormality code history 6
17 10001000
Abnormality code history 7
18 01001000
Abnormality code history 8
19 11001000
Abnormality code history 9
20 00101000
Abnormality code history 10 (the oldest)
21 10101000 Cumulative time
0–9999 (unit: 1 hour)
Display of cumulative compressor operating time
22 01101000 Cumulative time
0
–
9999 (unit: 10 hour)
23 11101000
Outdoor unit operation display
Compressor energizing
Compressor operating prohibition
Compressor in operation
Abnormality detection
Light ON/Light OFF
24 00011000
Indoor unit operation mode
No.1 unit mode No.2 unit mode No.3 unit mode No.4 unit mode No.5 unit mode No.6 unit mode No.7 unit mode No.8 unit mode
Cooling : light on, Heating: light blinking Stop fan: light o󰀨
25 10011000
Indoor unit operation display
No.1 unit operation No.2 unit operation No.3 unit operation No.4 unit operation No.5 unit operation No.6 unit operation No.7 unit operation No.8 unit operation
Thermo ON : light on Thermo OFF : light o󰀨
Delay code Abnormality delay Delay code Abnormality delay 1202 Discharge/Comp. temperature 1600 Discharge superheat (SHd)
Thermistor <Compressor>(TH4) Over charge refrigerant
1205 Thermistor <Outdoor liquid pipe> (TH3) 1601 Insu󰀩cient refrigerant 1211 Thermistor <Suction pipe> (TH6) Closed cooling valve 1214 Thermistor <Heat sink> (TH8) 1608 4-way valve disconnection 1221 Thermistor <Ambient> (TH7) 4310 Current sensor open/short 1222 Thermistor <HIC> (TH2) 4320
Undervoltage, overvoltage, or power module
1400 Low pressure sensor 4330 Heat sink temperature 1402 High pressure (63H) 4350 Power module
High pressure sensor (63HS) 4500 Outdoor fan motor