Electra WNG 50 DCI Service Manual page 90

TROUBLESHOOTING
3. Order of priority is 1-32. Diagnostics is continuously ON as long as power is on.
4. Heat Sink Over Heating Protection, Compressor Over Heating Protection, and System Over
Power Protection are declared only whenever in 'Stop-Compressor' status.
5. All faults, except the thermistor faults, will remain at least 10 seconds. This rule comes to
serve the monitoring utilities, in a case the fault is released quickly it will be still shown under
the monitoring utilities.
6. Thermistor faults are reported only when they are enabled.
When the outdoor unit is in fault (not protection), an in-fault signal is sent to the indoor.
When all the outdoor unit faults are cleared, 'no-fault' signal is sent to the indoo
r
14.3.2 Outdoor fault corrective actions
No Fault Name
1 OCT bad
2 CTT bad
3 HST bad
4 OAT bad
5 OMT bad
6 RGT bad
OFAN/Compressor
7
Feedback Loss
8 OFAN - IPM fault
9 OFAN Lock
OFAN- Vospd
10
exceeded
Compressor- IPM
11
Fault
12 Compressor Lock
Compressor- Vospd
13
exceeded
Compressor-
14
Foldback
15 DC under voltage
14-4
Fault Description
Thermistor not connected or
damaged
OFAN halls or wires bad.
Compressor wire cable bad or IPM
bad or compresor bad
Over current / Over temperature of
OFAN IPM
Fan does not rotate
Exceeds speed high limit
Over current / Over temperature of
compressor IPM
Compressor does not rotate
Exceeds speed limit
High pressure / Current reduces
compressor speed
DC voltage is lower than limit
Revision Y05-02
CONTENT
Corrective Action
Check Thermistor ( 2.4.8)
Check OFAN motor ( 2.4.4) and
compressor ( 2.4.5)
Check no obstruction to controller air
opening
Check OFAN motor ( 2.4.4)
Check motor type matches motor
jumpers in controller
Check OFAN motor ( 2.4.4)
Check motor type matches motor
jumpers in controller
Make necessary arrengments in unit
installation location to avoid back
wind
Avoid EMC problems ( 2.4.10.1)
Check no obstruction to controller air
opening
Check Compressor ( 2.4.5)
Check Compressor ( 2.4.5)
Try again and replace controller if still
have the problem
Check Compressor ( 2.4.5)
Replace controller
Service Manual - WNG 50_60_80 DCI