Service manual

13-17
CONTROL SYSTEM
SM DLF 1-A.1 GB
IDU Diagnostic Table.
● 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 IDU Diagnostic Table:
No Problem AO 54321
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
28 Model A No 1 1 1 0 0
29 Model B No 1 1 1 0 1
30 Model C No 1 1 1 1 0
31 Model D No 1 1 1 1 1
* CK Unit only
CONTENT