OPERATING AND MAINTENANCE MANUAL
Chapter 10 - Troubleshooting
TAEevo Tech 015÷802 60 Hz UL
192
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
F
Low pressure switch (LP)
trips
Alarm displayed:
b(n)HP
F1
No refrigerant fluid in the
circuit
(see also A5).
F1.1
• Refrigerant compressor stops;
• The text b(n)LP appears on
the display alternating with
value of BTOWT probe;
• General alarm relay activation.
Call in a qualified refrigeration
engineer to check for leaks and
eliminate them.
Have the circuit charged by a
qualified refrigeration engineer.
F2
Unit upline filter, if
present, is fouled
F2.1
See F1.1.
Clean or renew the water inlet
filter, if installed.
G
Compressor protection trips
(TAEevo Tech 015÷401
models only).
Alarm displayed:
C(n)tr
G1
Thermal load too high
with insufficient
refrigerant charge in
circuit (see also A5).
G1.1
• 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.
G2
Incorrect rotation
direction of scroll
compressor (three-phase
units only).
G2.1
Refrigerant is not
compressed and the unit is
unable to provide cooling
action.
Invert the position of two phase
wires of the power supply.
H
Display blank and all LEDs
switched off with main
switch P1 set to ON (I).
H1
Control circuit fuse has
blown.
H1.1
Using a tester, no voltage
reading is obtained on the
transformer secondary
winding terminals.
Check the possible causes for
blowing of the fuse.
Change the fuse.
H2
Abnormal power
consumption by one or
more of the control board
components.
H2.1
Despite the presence of
power on the board
terminals the display
remains blank and the
LEDs remain off.
Try powering off the unit and
then powering it on again.
If this fails to solve the problem
contact an authorised service
centre.
I
Alarm displayed:
AP1÷AP6
I1
Probes damaged.
I1.1
• See problem;
• General alarm relay activation.
Check that the temperature
probe is correctly connected to
the control board terminals and
that the cable is undamaged.
If necessary replace the
temperature probe.
J
Alarm displayed:
b(n)Ac
J1
Low water outlet
temperature.
The value set in the
relative parameter is
lower than the value
measured by the probe.
J1.1
• See problem;
• Compressor stops and then
restarts;
• General alarm relay activation;
• LED of general alarm icon
illuminates.
Identify and remedy the
problem that caused BEWOT
temperature to fall to a value
below AL26.
J2
Water flow rate too low.
J2.1
• See problem;
• Compressor stops and then
restarts;
• General alarm relay activation.
Increase the water flow rate.
PROBLEM CAUSE SYMPTOM REMEDY
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