MTA TAEevo015, Руководство по эксплуатации и обслуживанию

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TAEevo015÷351
37
MAINTENANCE AND OPERATING MANUAL
Chapter 10 - Trouble shooting
The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
TAEevo015÷351
G
Digital display and all LEDs
off although P1 main
switch On (“I”).
G1
Auxiliary circuit fuse
tripping.
G1.1
Measuring with a tester
the voltage at the
transformer secondary
winding connector,
there will be not tension
survey.
Check the causes of the fuse
tripping.
Replace the fuse.
G2
Abnormal power
consumption by one or
more of the control board
components.
G2.1
Despite presence of
power at the connectors
of the control board, the
display and all LEDs
remain unlit.
Try to turn the unit OFF and
ON again.
If this doesn't solve the
problem, contact the nearest
service centre
H
Alarm displayed:
P1, P2, P3, P4
H1
Probe BEWOT , BTWOT ,
BAT1 damaged.
H1.1
• See problem;
• main alarm relay tripped.
Check that the temperature
probe is correctly connected to
the control board terminals
and that the cable is
undamaged. If necessary
replace the probe.
I
Alarm displayed:
A04
I1
Low water outlet
temperature.
The value fixed by the
parameter is lower than
the one measured by the
probe.
I1.1
• See problem;
• the compressor stops and
restarts;
• main alarm relay tripped.
• the led of general alarm
icon lights up.
Identify and remove the cause
which provoked
BTWOT
temperature decreasing to a
value lower than Ar03.
I2
Too low water flow.
I2.1
• See problem;
• the compressor stops and
restarts;
• main alarm relay tripped.
Increase the water flow.
J
Alarm displayed:
A08
pump thermal protection.
J1
The pump's thermal
protection device has
tripped because the water
flow is too high.
J1.1
• See problem;
• main alarm relay tripped;
• the refrigerant compressor
and pump stop;
• the indication A08 appears
on the display alternated to
BTWOT value;
• 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 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 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 flashes 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 flashes on the display;
• the led of general alarm
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