13-2
TROUBLESHOOTING
SM FLODCI 2-A.4 GB
No Symptom Probable Cause Corrective Action
9
Unit works in wrong mode
(cool instead of heat or
heat instead of cool)
Electronics or power
connection to RV
Check RV power connections, if
OK,
check RV operation with direct
230VAC power supply, if OK,
replace outdoor controller.
10
All components are
operating properly but no
cooling or no heating
Refrigerant leak Check refrigeration system.
11
Compressor is over
heated and unit does not
generate capacity
EEV problem Check EEV.
12
Units goes into
protections and
compressor is stopped
with no clear reason
Control problem or
refrigeration system
problem
Perform diagnostics , and follow
the actions described.
13
Compressor motor is
generating noise and no
suction occurs
Phase order to
compressor is wrong
Check compressor phase order.
14
Water leakage from
indoor unit
Indoor unit drainage tube
is blocked
Check and open drainage tube.
15
Freezing of outdoor unit
in heat mode and outdoor
unit base is blocked with
ice
Connect base heater.
16
Unit operates with wrong
fan speeds or wrong
frequency
Wrong jumper settings
Perform diagnostics, and check
if units is operating by EEPROM
parameters.
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.
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