OPERATING AND MAINTENANCE MANUAL
Chapter 10 - Troubleshooting
iC 215 ÷ iC 780
64
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
ENGLISH
EN
D
High pressure switch (HP)
trip (iC 215÷540 models
only)
Alarm displayed:
b(n)HP
D1
The fan doesn’t work.
D1.1
• 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”).
Check the fan speed control
system.
D2
Ambient air temperature
too high.
D2.1
• 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”).
D3
Recirculation of warm air
due to incorrect installation.
D3.1
• 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”).
D4
See A3.
D4.1
See D1.1.
Clean the condenser fins.
Perform the alarm reset
procedure to restart the unit (see
Chapter 7 “Electronic
controller”).
D5
See A4.
D5.1
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”).
D6
Thermal load too high.
D6.1
• 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”).
PROBLEM
CAUSE
SYMPTOM
REMEDY