Ay: Anti Cycling; Ae: Enabling The Anti-Block Function; Af: Enabling The Anti-Freeze Function; Fw: Firmware Update - Granit COMFORT Premium C-85 Instrucciones De Instalación Y Mantenimiento

Attention: the setting of particular values of this parameter with relation to the system may help create situations
of risk due to high water temperatures being reached inside the pump (see Warnings, Chap. 2).
IMPORTANT: To obtain satisfactory pressure adjustments, you generally have to adjust both GP and GI.
5.6.5 RM: Maximum speed
Sets a maximum limit on the number of pump revolutions.

5.6.6 AY: Anti Cycling

As described in paragraph 9, this function is for avoiding frequent switching on and off in the case of leaks in the system.
The function can be enabled in 2 different modes, Normal (AY: ON) and Smart (AY: SMART). In Normal mode the electronic
control blocks the motor after N identical start/stop cycles. In Smart mode it acts on the parameter RP to reduce the
negative effects due to leaks. If disabled (AY: OFF) the function does not intervene.

5.6.7 AE: Enabling the anti-block function

This function is for avoiding mechanical blocks in the case of long inactivity; it acts by periodically rotating the pump.
When the function is enabled, every 167 hours the pump performs an unblocking cycle lasting

5.6.8 AF: Enabling the anti-freeze function

If this function is enabled the pump is automatically rotated when the temperature reaches values close to freezing point,
in order to avoid breakages of the pump.

5.6.9 FW: Firmware update

5.6.10 RF: Fault and warning reset

Holding down the – key for at least 2 seconds deletes the history of faults and warnings. The number of faults present in
the log is indicated under the symbol RF (max 64).
The log can be viewed from the MONITOR menu on page FF

6. PROTECTION SYSTEMS

The device is equipped with protection systems to preserve the pump, the motor, the supply line and the inverter. If one or
more protections trip, the one with the highest priority is immediately notified on the display. Depending on the type of error
the motor may stop, but when normal conditions are restored the error status may be cancelled immediately or only after
a certain time, following an automatic reset.
In the case of blockage due to water lack (BL), blockage due to motor overload (OC), blockage due to direct short circuit
between the motor phases (SC), you can try to exit the error conditions manually by simultaneously pressing and releasing
the + and – keys. If the error condition remains, you must take steps to eliminate the cause of the fault.
In the event of blocking due to one of the internal errors E18, E19, E20, E21 it is necessary to wait 15 minutes with the
machine powered until the blocked status is automatically reset.
Display indication
PD
FA
Display indication
PH
BL
BP1
PB
OT
OC
SC
ESC
HL
NC
Ei
Vi
EY
6.1

Description of blockages

6.1.1 "BL" Anti Dry-Run (Protection against dry running)

In the case of lack of water the pump is stopped automatically after the time TB. This is indicated by the red "Alarm" led
and by the letters "BL" on the display. After having restored the correct flow of water you can try to leave the protective
ENGLISH
Alarm in the fault log
Table 7: Alarms
Blockage conditions
Block due to excessive operating time without hydraulic flow
Blockage due to water lack
Blockage due to reading error on the delivery pressure sensor
Blockage due to supply voltage outside specifications
Blockage due to overheating of the power stages
Blockage due to motor overload
Blockage due to short circuit between the motor phases
Blockage due to short circuit to earth
Hot liquid
Blockage due to motor disconnected
Blockage due to i-th internal error
Blockage due to i-th internal voltage out of tolerance
Block for cyclicality abnormal detected on the system
Table 8: Indications of blockages
Irregular switching off
Problems in the cooling system
Description
14
10 sec.
Description