OPERATING AND MAINTENANCE MANUAL
Trouble shooting
MCCY - CY 013÷301
60
ENGLISH
EN
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.
I
Alarm displayed:
A04
I1
Water outlet temperature
too low.
The value of the parameter
Ar03 is higher then than the
value measured by the
BEWOT probe.
I1.1
• See problem;
• The compressor stops and
restarts when the
Ar03+Ar04 value is
exceeded;
• main alarm relay tripped.
• The led of the icon
lights
up.
Identify and remove the cause
of BEWOT temperature
decreasing to a value lower than
Ar03.
I2
Water flow too low.
I2.1
• See problem;
• The compressor stops and
restarts when the
Ar03+Ar04 value is
exceeded;
• main alarm relay tripped.
Increase the water flow.
J
Alarm visualized:
A08
pump thermal protection
J1
The thermal protection of
the pump trips because the
water flow is too high.
J1.1
• See problem;
• main alarm relay tripped;
• the refrigerant compressor
and the pump stop;
• the alarm A08 alternate with
the value of the
BEWIT
probe;
• the pressure difference read
on the machine gauge with
the pump stopped and pump
running is lower than the
available head with
maximum pump flow.
Reset the thermal protection
device.
Increase the pressure drop in
the hydraulic circuit, for
example by partially closing the
pump output valve.
J2
The grille through which
the pump cooling air passes
is obstructed.
J2.1
• See problem;
• main alarm relay tripped;
• the refrigerant compressor
and the pump stop.
Reset the thermal protection
device. Free the grille.
J3
The pump is defective.
J3.1
• See problem;
• main alarm relay tripped;
• the refrigerant compressor
and the pump stop;
• the current absorbed by the
pump is greater than the
nominal rating;
• the pump may be noisy.
Reset the thermal protection
device.
Replace the pump.
K
Alarm
ACF1,ACF2,ACF3,
ACF4,ACF5
K1
Configuration error.
K1.1
ACFx blinks on the
display and unit blocked
Turn off and turn on the unit. If
this does not solve the problem,
contact the nearest service
centre.
L
Alarm
EE
L1
The processor does not
memorize the data in the
right way
L1.1
• The machine does not work
• EE blinks on the display
• The led of the icon
lights
up.
Turn off and turn on the unit. If
this does not solve the problem,
contact the nearest service
centre.
PROBLEM
CAUSE
SYMPTOM
REMEDY
Summary of Contents for MCCY-CY013 301
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