Electra LEX 25 DCI Service Manual page 97

TROUBLESHOOTING
13.2.3.2 Outdoor fault corrective actions
No Fault Name
1 OCT bad
2 CTT bad
3 HST bad
4 OAT bad
5 TSUC 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
16 DC over voltage
17 AC under voltage
13-14
Probable Cause
Thermistor not connected or
damaged
OFAN halls or wires bad.
Compressor wire cable bad or
IPM bad or compressor 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
DC voltage exceeds its high
limit
AC input voltage is lower than
limit
CONTENTS
Corrective Action
Check Thermistor
Check OFAN motor and
compressor
Check no obstruction to
controller air opening
Check OFAN motor
Check motor type matches
motor jumpers in controller
Check OFAN motor
Check motor type matches
motor jumpers in controller
Make necessary arrengments
in unit installation location to
avoid back wind
Avoid EMC problems
Check no obstruction to
controller air opening
Check Compressor
Check Compressor
Try again and replace controller
if still have the problem
Check Compressor
Replace controller
Check if input voltage higher
than limit (270VAC), if not
and the problem presist,
replace controller. If voltage is
high, shut off the power and
recommend the customer to fix
the power supply
Check if input voltage lower
than limit (170VAC), if not and
the problem presist, replace
controller. If voltage is low,
recommend the customer to fix
the power supply
SM LEXDCI 1-E.1 GB