Airwell DLF 18 DCI, Technical Manual

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13-7
TROUBLESHOOTING
SM DL
F 1
-A.1 GB
No
Problem AO 5 4 3 2 1
1 OCT is shorted/disconnected Yes 0 0 0 0 1
2 CTT is shorted/disconnected Yes 0 0 0 1 0
3 HST is shorted/disconnected Yes 0 0 0 1 1
4 OAT is shorted/disconnected Yes 0 0 1 0 0
5 OMT is shorted/disconnected Yes 0 0 1 0 1
6 RGT is shorted/disconnected Yes 0 0 1 1 0
7 RLT is shorted/disconnected Yes 0 0 1 1 1
8 High pressure protection Yes 0 1 0 0 0
9 Low pressure protection Yes 0 1 0 0 1
10 No communication to Driver Yes 0 1 0 1 0
11
x
Compressor IPM Fault
x
IPM Driver Pin
x
Compressor Current Sensor Fault
Yes 0 1 0 1 1
12 No Water Flow (For Hydro Units only) Yes 0 1 1 0 0
13 Refrigerant Leakage No 0 1 1 0 1
14
x
DC over voltage
x
DC under voltage
Yes 0 1 1 1 0
15
x
AC under voltage
x
AC over Voltage
x
Zero Crossing detection
Yes 0 1 1 1 1
16
x
Mismatch between IDU & ODU models
x
'<=
x
=<='
Yes 1 0 0 0 0
17 No Communication Yes 1 0 0 0 1
18 System Over Power Yes 1 0 0 1 0
19
> PFC Current sensor
> Missing phase
> Phase order mismatch
> PFC Trip (Oveload)
Yes 1 0 0 1 1
20 Heat sink Over Heating Yes 1 0 1 0 0
21 Deicing No 1 0 1 0 1
22 Compressor Over Heating Yes 1 0 1 1 0
23 Compressor Over Current Yes 1 0 1 1 1
24 No OFAN Feedback (Both OFAN_UP or OFAN_DN) Yes 1 1 0 0 0
25
x
OFAN IPM fault
x
OFAN IPM Driver Pin
Yes 1 1 0 0 1
26 Compressor Lock Yes 1 1 0 1 0
27 Indoor Coil defrost Yes 1 1 0 1 1
28 Abnormal system behave No 1 1 1 0 0
29 Indoor Sensor fault Yes 1 1 1 0 1
30
x
Outdoor Coil Overheating
x
Indoor Coil Overheating
Yes 1 1 1 1 0
31 Operation conditions are exceeded Yes 1 1 1 1 1
1 - ON, 0 - OFF
Only one code is shown. Order of priority is lower to the higher number. Diagnostics is continuously
ON as long power is on.