tcaes 230÷4160 thae - Rhoss

SECTION II: INSTALLATION AND MAINTENANCE
II.3.3
STATUS INDICATOR LEDS
○ COMPRESSOR STATUS LED
• Off: the compressor is not running.
• On: the compressor is running.
• Flashing fast: delay timer operation.
• Flashing slowly: defrosting.
○ EVAPORATOR HEATING ELEMENT LED
• Off: the heating element is disabled.
• On: the heating element is activated.
II.3.4 STARTING AND STOPPING THE MACHINE
START UP AFTER LONG PERIODS OF
INACTIVITY
IMPORTANT!
Machine commissioning or the first start up must
be carried out by skilled personnel authorised by
RHOSS, and anyway qualified to work on this type
of product.
○ Always act on the main disconnecting switch to disconnect the unit
from the mains power supply before carrying out any maintenance work
or inspections on the appliance.
○ Check the following before starting up the unit:
The electricity power supply must comply with the specifications on the
data plate and/or the wiring diagram (L1-L2-L3 + NEUTRAL threephase
power supply) and it must fall within the following limits:
• Power supply frequency variation: ±2 Hz.
• Power supply voltage variation: ±10% the rated voltage.
• Imbalance between the power supply phases: < 2%.
Electrical connections must be carried out in compliance with the
regulations in effect in the place of installation and with the indications
on the wiring diagram provided with the unit.
The installer is responsible for sizing the power supply cables.
IMPORTANT: before connecting the main L1-L2-L3+N power
supply cables to the terminals on the main disconnecting switch,
make sure they are in the correct sequence.
• Access the control panel and make sure the power supply terminals
and contactors are secured tightly (they may have become loose during
transport, which could lead to malfunctions);
• make sure that the oil level in the compressors reaches at least half
way up the sight glass;
• make sure the delivery and flow lines on the water system are
connected according to the arrows next to the water exchanger inlet
and outlet;
• make sure the condensing coil is well ventilated and clean.
○ On all units, the microprocessor board starts up the compressors 3
minutes after the machine was last stopped.
○ The appliance may now be switched on by acting on the main
ON/OFF switch on the microprocessor control user interface panel,
located on the control board. Any malfunctions are immediately
displayed on the control panel by way of the alarm signals.
II.3.4.1 Daily shutdown
Daily shutdown can be controlled by acting on the ON/OFF key on the
user interface panel or from a user remote ON/OFF control which can
be inserted on the unit by following the indications in the wiring
diagrams.
This ensures the power supply to the compressor sump heating
elements.
II.3.5 CALIBRATING SAFETY AND CONTROL
DEVICES
The units are factory tested, where they are also calibrated and the
default parameter settings are inserted. These guarantee that the
appliances run correctly in rated working conditions (see “SAFETY
COMPONENT CALIBRATION SETTINGS”).
• The circuit sizing of the electronic and electromechanical
components employed are indicated in the wiring diagram enclosed
with the unit.
Safety component calibration settings Enablement
High pressure switch (PA)
Low pressure switch (PB) (TCAE-
TCAES)
Low pressure switch (PB) (THAE-
THAES)
Water differential pressure switch
Electronic board parameters
Summer working temperature setting
Winter working temperature setting (THAE-
THAES)
28,5 bar
2,0 bar
0,7 bar
0,09 bar
Reset
18,5 bar -
MANUAL
3,5 bar –
AUTOMATIC
2,2 bar –
AUTOMATIC
0,11 bar -
AUTOMATIC
Default setting
9.5°C (230÷260)
8°C (470÷4160)
42.5°C (230÷260)
44°C (470÷4160)
Working temperature differential
1.3°C (470÷4160)
2.6°C (230÷260)
Antifreeze temperature set point 3°C
Maximum defrosting time (THAE-THAES)
10 min
Minimum time between two consecutive
defrosting procedures (THAE-THAES)
40 min
Antifreeze temperature differential 8°C
II.3.6 ALARM TABLE
The control board displays the alarms referred to in the “TYPE OF
ALARM TABLE”. Alarms are reset by acting on the RESET key on the
board after the problem has been identified and eliminated.
Alarm Alarm description Reset
E01 High pressure 1 alarm MANUAL
E02 Low pressure 1 alarm MANUAL
E03 Compressor 1 thermal overload MANUAL
E04 Fan thermal overload alarm MANUAL
E05 Antifreeze block alarm MANUAL
E06 ST2 sensor malfunction AUTOMATIC
E07 ST3 sensor malfunction AUTOMATIC
E13 Compressor 2 thermal overload MANUAL
E21 High pressure 2 alarm MANUAL
E22 Low pressure 2 alarm MANUAL
E23 Compressor 3 thermal overload MANUAL
E27 ST6 sensor malfunction AUTOMATIC
E33 Compressor 4 thermal overload MANUAL
E40 ST1 sensor malfunction AUTOMATIC
E41 Water differential pressure switch alarm MANUAL
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