Electra DELTA 25, Руководство по обслуживанию

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12-2
TROUBLESHOOTING
Revision Y05-01 Service Manual - Delta DCI
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.
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.