Electra ONG 25 DCI INV, Service Manual

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TROUBLESHOOTING
12-2 Revision 0 Service Manual – WNG DCI
No SYMPTOM PROBABLE
CAUSE
CORRECTIVE ACTION
8 Compressor is on but
outdoor fan does not
work Problem with
outdoor electronics
or outdoor fan Check outdoor fan motor according
to the procedure in section 12.5.3
below, if not OK replace controller
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 )See 12.3
below(, 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 umper j
settings
Perform diagnostics (See 12.3
below), and check if units is
operating by EEPROM parameters.
12.2 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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