Install Instructions

7
7
. Troubleshooting the error codes:
L
isted below are potential diagnostic error codes which will appear on the LED display in case of a malfunction.
F
AULTS
CONTROL
PANEL
C
AUSES
REMEDIES
The circulator is
noisy
LED on
Suction pressure is
insufficient - cavitation
Increase the system suction
pressure within the
permissible range
LED on
Presence of foreign bodies
i
n the impeller
Disassemble the motor and
c
lean the impeller
Loud noises of
water circulation
Flashing white
LED
Air in the system
Vent the system. Repeat
fill and purge steps
LED on The flow is too high Reduce the pump speed
Circulator is not
running although
the electrical
power supply is
switched on
LED off
Lack of power supply
Verify incoming voltage
from power supply
Verify the connection to
the motor
Circuit breaker might be
tripped
Check circuit breaker at panel
and reset if necessary
The circulator is defective Replace the pump
Overheating
Let the pump cool down.
Then try to re-start it.
Verify that the water
and ambient temperature are
within the indicated
temperature ranges
LED red The rotor is blocked
Disassemble the motor and
clean the impeller. See
unlocking procedure below
Insufficient supply voltage
Verify that the power supply
matches the data on the name
plate
Building does not
get warm
LED on
The circulator
performance is too low
Increase the suction head.
Increase speed or ∆P setting
Unlocking Procedure:
A red light in the LED indicates the circulator is locked or sticking. Turn the selector to the position MAX, disconnect and connect
power supply to start the automatic release process. The circulator makes 100 attempts to restart (process lasts approximately
15 minutes). Every restart is signalled by a short flash of white LED light. If the locking is not removed through the automatic
release process after 100 attempts to restart the circulator, it goes into standby and the LED remains solid red. In this case follow
the manual procedure described in the next steps: during any attempt, the red LED light keeps blinking; after that the circulator
tries again to start. If the locking is not removed through the automatic release process (the warning light returns to be red), per-
form the manual steps described below.
1. Disconnect power supply - the warning light switches off.
2. Close both isolating valves and allow cooling. If there are no shut-off devices, drain the system so that the fluid level is
beneath that of the circulator.
3. Loosen 4 motor bolts. Remove motor from casing. Carefully pull the rotor/impeller from the motor.
4. Remove impurities and deposits from the impeller and casing.
5. Reinsert the rotor/impeller into the motor.
6. Set the dial to the MAX position.
7. Connect power supply. Check for impeller rotation.
8. If the circulator still doesn’t run it will need to be replaced.