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12-3
TROUBLESHOOTING
SM CN 1-E.1 GB
When system enters diagnostics mode, only one fault code is shown. Order of priority is from
the lower to the higher number. Diagnostics is continuously ON as long as power is ON. The
current system operation mode will not be changed.
If no fault occurred in the system, no fault code will be displayed during normal operation
mode. The last fault code will be displayed even if the system has recovered from that
fault. The last fault will be deleted from the EEPROM after the system has exit diagnostics
mode.
In diagnostics mode, system fault / status will be indicated by blinking of Heat & Cool LEDs.
The coding method will be as follows:
Heat LED will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds. Cool
LED will blink during the same 5 seconds according to the following Indoor / Outdoor unit
tables:
Note: 0 – OFF, 1-ON
12.3.1 Indoor
Unit
Diagnostics
●
Alarm Output
The Alarm Output dry contact will be on (closed), when a predefined set faults occur.
The fault set is defined under diagnostics section.
The alarm output will be off (open), when the predefined fault is cleared.
The indoor alarm outputs are defined according to the following table:
No
Problem
AO
5
4
3
2
1
1
ICT is disconnected
Yes
0
0
0
0
1
2
ICT is shorted
Yes
0
0
0
1
0
3
RAT is disconnected
Yes
0
0
0
1
1
4
RAT is shorted
Yes
0
0
1
0
0
5
Reserved (for MSMP used as RGT fault)
No
0
0
1
0
1
*
6
ICTE shorted/disconnected (when enabled)
Yes
0
0
1
1
0
*
7
Undefined IDU family/model
Yes
0
0
1
1
1
8
No Communication
Yes
0
1
0
0
0
9
No Encoder
No
0
1
0
0
1
10
Reserved
No
0
1
0
1
0
11
Outdoor Unit Fault
No
0
1
0
1
1
…
Reserved
No
17
Defrost protection
No
1
0
0
0
1
18
Deicing Protection
No
1
0
0
1
0
19
Outdoor Unit Protection
No
1
0
0
1
1
20
Indoor Coil HP Protection
No
1
0
1
0
0
21
Overflow Protection
Yes
1
0
1
0
1
22
Reserved
No
24
EEPROM Not Updated
No
1
1
0
0
0
25
Bad EEPROM
No
1
1
0
0
1
26
Bad Communication
No
1
1
0
1
0
27
Using EEPROM data
No
1
1
0
1
1
CONTENT
Содержание CN 25 DCI
Страница 15: ...4 2 OUTLINE DIMENSIONS SM CN 1 E 1 GB 4 2 Outdoor Unit DCI 50 4 3 Outdoor Unit DCI 60 CONTENT ...
Страница 16: ...4 3 OUTLINE DIMENSIONS SM CN 1 E 1 GB 4 4 Outdoor Unit DCI 72Z CONTENT ...
Страница 44: ...8 1 WIRING DIAGRAMS SM CN 1 E 1 GB 8 WIRING DIAGRAMS 8 1 CN 25 35 50 60 70 DCI CONTENT ...
Страница 90: ...13 10 EXPLODED VIEWS AND SPARE PARTS LISTS SM CN 1 E 1 GB 13 9 Outdoor Unit ONG3 50 DCI CONTENT ...
Страница 92: ...13 12 EXPLODED VIEWS AND SPARE PARTS LISTS SM CN 1 E 1 GB 13 11 Outdoor Unit DCI 60 CONTENT ...
Страница 94: ...13 14 EXPLODED VIEWS AND SPARE PARTS LISTS SM CN 1 E 1 GB 13 13 Outdoor Unit DCI 72Z CONTENT ...