Electra Delta 25 Service Manual page 46

12.1.3.1 Indoor unit Diagnostics
No
1 RT-1 is disconnected
2 RT-1 is shorted
3 RT-2 is disconnected
4 RT-2 is shorted
5 Reserved
7 Communication mismatch
8 No Communication
9 No Encoder
10 Reserved
11 Outdoor Unit Fault
... Reserved
17 Defrost protection
18 Deicing Protection
19 Outdoor Unit Protection
20 Indoor Coil HP Protection
21 Reserved
22 Reserved
24 EEPROM Not Updated
25 Bad EEPROM
26 Bad Communication
27 Using EEPROM data
28 Model A
29 Model B
30 Model C
31 Model D
13.1.3.2 Indoor unit diagnosis and corrective actions
No. Fault
Sensor failures of all
1
types
Communication
mismatch
2
No Communication
3
No Encoder
4
Outdoor Unit Fault
5
EEPROM Not Updated System is using ROM parameters
6
Bad EEPROM
7
Bad Communication
8
Using EEPROM data
9
SM DELTAZ 1-E.0 GB
Problem
Probable Cause
Indoor and Outdoor controllers
are with different versions
Communication
wiring is not good.
Indoor electronics or motor
Outdoor controller problem
and not EEPROM parameters
Communication quality is low
reliability
No problem. System is using
EEPRRRROM parameters
CONTENTS
5 4 3
0 0 0
0 0 0
0 0 0
0 0 1
0 0 1
0 0 1
0 1 0
0 1 0
0 1 0
0 1 0
1 0 0
1 0 0
1 0 0
1 0 1
1 0 1
1 1 0
1 1 0
1 1 0
1 1 0
1 1 1
1 1 1
1 1 1
1 1 1
Corrective Action
Check sensor connections or replace
sensor
Replace Indoor controller
or grounding Check Indoor to Outdoor wiring and
grounding
Check motor wiring, if ok, replace motor,
if still not ok, replace Indoor controller.
Switch to Outdoor diagnostics.
No action, unless special parameters
are required for unit operation.
No action, unless special parameters
are required for unit operation.
Check Indoor to Outdoor wiring and
grounding
TROUBLESHOOTING
2 1
0 1
1 0
1 1
0 0
0 1
1 1
0 0
0 1
1 0
1 1
0 1
1 0
1 1
0 0
0 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
12-3