Error Messages - Ferroli AQUA1 PLUS 90 HT Manuel D'installation Et Maintenance

Installation and maintenance manual
equipment starts up in the "ECO" mode
(default setting).
ADVANCED MANAGEMENT
N.B.: The following instructions are
reserved for
assistance personnel.
6.1.1.1 Different operating mode start
conditions
Each operating mode must comply with precise
conditions in order to be enabled:
AUTOMATIC operating mode
The condition in order to enable the start of this
function is as follows: lower probe < SP2 – r0
(hysteresis);
ECO operating mode
The condition in order to enable the start of this
function is as follows: lower probe < SP1 – r0
(hysteresis);
OVERBOOST operating mode
The condition in order to enable the start of this
function is as follows: lower probe < SP3and
upper probe < SP3.Once a temperature
exceeding SP3 has been detected, the
Overboost operating mode terminates and
the previously set operative mode is restored.
6.1.1.2 The display
If the equipment is in the "ON" status, during
normal operation, the display will show the
established temperature by means of parameter
P5:
If P5 = 0, the display will show the temperature
of the upper part of the boiler;
If P5 = 1, the display will show the active
working set point;
If P5 = 2, the display will show the temperature
of the lower part of the boiler;
If P5 = 3, the display will show the temperature
of the evaporator;
If the equipment is in the "stand-by" status, the
display will be switched off.
6.1.1.3 Alarms
AL Minimum temperature alarm
Solution:
- Check the temperature associated with the
alarm;
- Parameters displayed: A0, A1, A2 and A11.
Main consequences:
- The equipment will continue to work as normal
AH Maximum temperature alarm
Solutions:
- Check the temperature associated with the
specialised technical
alarm;
- Parameters displayed: A3, A4, A5 and A11.
Main consequences:
- The equipment will continue to work as normal.
When the cause of the alarm has been
removed, the
equipment is restored.
6.1.1.4

Error messages

Pr1 Error in probe in upper part of the boiler
Solutions:
- Check that the type of probe is in conformity
with parameter P0 settings;
- Check the probe is intact;
- Check the equipment-probe connection;
- Check the temperature of the upper part of
the boiler.
Main consequences:
- The equipment stops working.
Pr2 Error in probe in lower part of the boiler
Solutions:
- The same as the previous situation but relating
to the probe in the lower part of the boiler.
Main consequences:
- The equipment stops working.
Pr3 Error in evaporator probe
Solutions:
- The same as the previous situation but relating
to the evaporator probe.
- The equipment stops working.
When the cause of the alarm has been
removed, the
equipment is restored.
6.1.1.5 Defrosting
Defrosting can be enabled in the following way:
Automatically, when the temperature of the
evaporator is below
parameter d17 (only if P4 has a value other
than 0);
In any case, between one defrosting procedure
and another, the compressor must have been left
switched on for a period either longer than or
equal to d18 minutes. Otherwise the request to
enable the defrosting procedure will not be
accepted.
If P4 = 1, d2 represents the temperature of the
evaporator, above
procedure is terminated. Viceversa, if P4 = 0 or P4 =
2, parameter d2 is not taken into consideration.
If during the defrosting procedure the evaporate
or probe is above the threshold set by means of
parameters d2 and P4 = 1, the request to enable
the defrosting procedure is not accepted.
The defrosting procedure consists of three stages:
normal operation of
normal operation of
that established
which the defrosting
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