Electra CN 25 DCI, Service Manual

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12-2
TROUBLESHOOTING
SM CN 1-E.1 GB
No SYMPTOM
PROBABLE
CAUSE
CORRECTIVE ACTION
8
Compressor is on but outdoor
fan does not work
Problem with outdoor
electronics or
outdoor fan CheCN outdoor fan motor according
to the procedure in section 12.5.3 , 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
CheCN RV power connections, if
OK,
CheCN 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 CheCN refrigeration system.
11
Compressor is over heated
and unit does not generate
capacity
EEV problem CheCN 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), and
follow the actions described.
13
Compressor motor is
generating noise and no
suction occurs
Phase order to
compressor is wrong
CheCN compressor phase order.
14
Water leakage from indoor
unit Indoor unit drainage
tube is bloCNed
CheCN and open drainage tube.
15
Freezing of outdoor unit in
heat mode and outdoor unit
base is bloCNed with ice
Connect base heater.
16
Unit operates with wrong fan
speeds or wrong frequency Wrong jumper
settings
Perform diagnostics (See 12.3),
and cheCN if units is operating by
EEPROM parameters.
12.2 CheCNing the refrigeration system
CheCNing 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.
12.3 Judgment by Indoor/Outdoor Unit Diagnostics
Enter diagnostics mode - press for five seconds Mode button in any operation mode.
ACNnowledgment is by 3 short beeps and lights of COOL and HEAT LED’s. Then, every short
pressing of Mode button will scroll between Indoor and Outdoor unit diagnostic modes by the
aCNnowledgment of 3 short beeps and lighting of COOL and HEAT LED’s.
During the Outdoor unit diagnostics all four Indoor LED’s (STBY, Operate, Filter and Timer)
are blinking. When Indoor diagnostics is displayed, all four LED’s (STBY, Operate, Filter and
Timer) are ON.
CONTENT