Electra WNG 25 DCI INV Service Manual page 45

TROUBLESHOOTING
12.3.2 Indoor unit diagnosis and corrective actions
No.
Fault
Sensor failures of
1
all types
Communication
2
mismatch
No Communication Communication or grounding
3
No Encoder
4
Outdoor Unit Fault
5
EEPROM Not
6
Updated
Bad EEPROM
7
Bad
8
Communication
Using EEPROM
9
data
12-4
Probable Cause
Indoor and Outdoor
controllers are with different
Versions.
wiring is not good.
Indoor electronics or motor
Outdoor controller problem Switch to Outdoor
System is using ROM
parameters and not
EEPROM parameters.
Communication quality is low
Reliability.
No problem. System is using
EEPROM parameters.
Revision 0
CONTENT
Corrective Action
Check sensor connections or
replace sensor.
Replace Indoor controller.
Check Indoor to Outdoor
wiring and grounding.
. Checkmotorwiring,ifok,
replace motor, if still not ok,
replace Indoor controller.
.
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.
Service Manual – WNG DCI