Electra LEX 25 DCI Service Manual page 85

TROUBLESHOOTING
No Symptom
Unit works in wrong mode
9 (cool instead of heat or
heat instead of cool)
All components are
10 operating properly but no
cooling or no heating
Compressor is over
11 heated and unit does not
generate capacity
Units goes into
protections and
12
compressor is stopped
with no clear reason
Compressor motor is
13 generating noise and no
suction occurs
Water leakage from
14
indoor unit
Freezing of outdoor unit
in heat mode and outdoor
15
unit base is blocked with
ice
Unit operates with wrong
16 fan speeds or wrong
frequency
13.1.2 Checking the refrigeration system
Checking system pressures and other thermodynamic measures should be done when system is in
Test Mode (in Test mode, system operates in fixed settings). The performance curves given in this
manual are given for unit performance in test mode when high indoor fan speed is selected.
Entering test mode:
Set unit to Cool/16 degrees/High indoor fan speed, or Heat/30 degrees/High indoor fan speed, and
enter diagnostics.
13-2
Probable Cause
Electronics or power
connection to RV
Refrigerant leak
EEV problem
Control problem or
refrigeration system
problem
Phase order to
compressor is wrong
Indoor unit drainage tube
is blocked
Wrong jumper settings
CONTENTS
Corrective Action
Check RV power connections, if
OK,
check RV operation with direct
230VAC power supply, if OK,
replace outdoor controller.
Check refrigeration system.
Check EEV.
Perform diagnostics , and follow
the actions described.
Check compressor phase order.
Check and open drainage tube.
Connect base heater.
Perform diagnostics, and check
if units is operating by EEPROM
parameters.
SM LEXDCI 1-E.1 GB