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OPERATING AND MAINTENANCE MANUAL
Chapter 10 - Troubleshooting
TAEevo Tech 015÷802 60 Hz UL
191
The data in this manual are not binding and they can be modified by the manufacturer without notice.
Reproduction of this manual is strictly prohibited
EN
ENGLISH
E
High pressure switch (HP)
trip and/or compressor
protection trips
(TAEevo Tech 402÷802
models only)
Alarm displayed:
b(n)HP
E1
The fan doesn’t work.
E1.1
• Refrigerant compressor stops;
• The text
b(n)HP
appears on
the display alternating with
value of
BTOWT
;
• General alarm relay activation;
Repair or replace the fan.
Where fitted, check the circuit
breaker of the fan.
Perform the alarm reset
procedure to restart the unit (see
Chapter 7 “Electronic
controller”).
E2
Ambient air temperature
too high.
E2.1
• Ambient air temperature
higher than maximum
permitted value;
• See D1.1.
If the unit is installed in an
enclosed place, reduce ambient
temperature to within the
prescribed limits, for example
by increasing room ventilation.
Perform the alarm reset
procedure to restart the unit (see
Chapter 7 “Electronic
controller”).
E3
Recirculation of warm air
due to incorrect
installation.
E3.1
• Condenser cooling air
temperature higher than
maximum permitted value;
• See D1.1.
Change the position of the unit
or the position of any nearby
obstructions in order to prevent
recirculation.
Perform the alarm reset
procedure to restart the unit (see
Chapter 7 “Electronic
controller”).
E4
See A3.
E4.1
See D1.1.
Clean the condenser fins.
Perform the alarm reset
procedure to restart the unit (see
Chapter 7 “Electronic
controller”).
E5
See A4.
E5.1
See D1.1.
Remove the obstruction from
the front surface of the
compressor.
Perform the alarm reset
procedure to restart the unit (see
Chapter 7 “Electronic
controller”).
E6
Thermal load too high.
E6.1
• Water outlet temperature too
high;
• Refrigerant compressor stops;
• General alarm relay activation.
Restore thermal load to within
prescribed limits if possible.
Perform the alarm reset
procedure to restart the unit (see
Chapter 7 “Electronic
controller”).
E7
Thermal load too high
with insufficient
refrigerant charge in
circuit (see also A5).
E7.1
• The head and the body of the
compressor are very hot;
• The compressor stops and
attempts to restart after a short
time (even few seconds).
• Compressor thermal protection
trips
• Display shows message
C(n)tr
• LED of general alarm icon
illuminates.
Call in a qualified refrigeration
engineer to check for leaks and
eliminate them.
Have the circuit charged by a
qualified refrigeration engineer.
E8
Incorrect rotation
direction of scroll
compressor (three-phase
units only).
E8.1
Refrigerant is not
compressed and the unit is
unable to provide cooling
action.
Invert the position of two phase
wires of the power supply.
PROBLEM
CAUSE
SYMPTOM
REMEDY