Electra Delta 25 Service Manual page 45

TROUBLESHOOTING
No SYMPTOM
Compressor is over heated
11
and unit does not generate
capacity
Units goes into protections
12
and compressor is stopped
with no clear reason
Compressor motor is
13
generating noise and no
suction occurs
Water leakage from indoor
14
unit
Freezing of outdoor unit in
15
heat mode and outdoor unit
base is blocked with ice
Unit operates with wrong fan
16
speeds or wrong frequency
12.1.2 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.
12.1.3 Judgment by Indoor/Outdoor Unit Diagnostics
Enter diagnostics mode - press for five seconds Mode/Reset button in any operation mode.
Acknowledgment is by 3 short beeps and lights of all Display LED's. Then, The units will enter
into Indoor and Outdoor unit diagnostic modes.
During the Outdoor unit diagnostics all three Indoor LED's (STBY/Operate, Filter and Timer)
are blinking. When Indoor diagnostics is displayed, all three LED's (STBY/Operate, Filter and
Timer) are ON.
When system enters diagnostics mode, only one fault code is shown. Order of priority is from
the lower to the higher number. Diagnostics is continuously ON as long as power is ON. The
current system operation mode will not be changed.
If no fault occurred in the system, no fault code will be displayed during normal operation MOde.
The last fault code will be displayed even if the system has recovered from that fault. The last
fault will be deleted from the EEPROM after the system has exit diagnostics mode.
In diagnostics mode, system fault / status will be indicated by blinking of Filter & Timer LEDs.
The coding method will be as follows:
Filter LED will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds.
Timer LED will blink during the same 5 seconds according to the following Indoor / Outdoor
unit tables:
Note: 0 – OFF, 1-ON
12-2
PROBABLE CAUSE
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 EEV
Perform diagnostics (See 13.1.3 below), and
follow the actions described.
Check compressor phase order.
Check and open drainage tube.
Connect base heater.
Perform diagnostics (See 12.1.3 below),
and check if units is operating by EEPROM
parameters.
SM DELTAZ 1-E.0 GB