ESBE GRC241 Mode D'emploi page 5

WILO - FAULTS, CAUSES AND REMEDIES
Faults Meaning
Circulation Unit not No heating
operating No cooling
Circulation Unit not No heating
operating No cooling
Circulation Unit not Not sufficient heating
operating properly Not sufficient cooling
Circulation Unit not Not sufficient heating
operating properly
To high Pressure Differential Poor energy
performance
LED lights Circulation pump in
green operation
LED blinks quick green Circulation pump in air ven-
ting mode
LED blinks red/ green Circulation pump in function
but stopped
LED blinks red Circulation pump out of
function
LED off No power supply
GRUNDFOS
- CIRCULATION PUMP
USER INTERFACE
The user interface is designed with a single push button, one red/green LED and
four yellow LEDs.
Push button
NAVIGATION - KEY LOCK FUNCTION
The purpose of the key lock function is to avoid accidental change of settings and
misuse. When the key lock function is enabled, all long key presses will be ignored.
This prevents the user from entering the "select setting mode" area and allows the
user to see the "show setting mode" area.
> 10 seconds
If you press the key lock for more than 10 seconds, you can toggle between
enabling/disabling the key lock function. When doing so, all LEDs will flash for a
second indicating that lock is toggled.
SETTING SELECTION
You can choose between the performance view and settings view. If you press
the button for 2 to 10 seconds, the user interface switches to "setting selection"
if the user interface is unlocked. You can change the settings as they appear.
The settings appear in a particular order in a closed loop. When you release
the button and wait for 10 seconds, the user interface switches back to the
performance view and the last setting is stored.
Diagnostic
Pump not running, led is off.
Actuator/Controller not
running.
Pump is running, led is on.
Actuator/Controller is run-
ning.
Noise from the system.
Pump and Actuator/
Controller is running
Room temperature too low
when it´s very cold outside.
Noise from system
Low temperature difference
over boiler
Circulation pump runs
according it's setting
Circulation pump runs
during 10 min in air venting
function. Afterwards the
desired mode must be
selected.
Circulation pump restarts
by itself after the fault has
been dealt with.
Circulation pump stopped
(blocked)
No voltage on electronics
LED indicators
More information on page 6 - Operation Status, Alarm Staus and Settings view.
This circulator gives the opportunity of external PWM signal control with profile A
or C or internal control with three control modes plus AUTOADAPT.
PROPORTIONAL PRESSURE MODE
UPM3 xx-50
AUTOADAPT
PP: proportional pressure curve 1, 2, or 3.
* The circulator is factory-set to start in this control mode.
5 (31
Cause Remedy
No power supply Check connections
Shut off valves are closed Open all shut off valves
Air in the system blocks the Remove air from the system
circulation. by filling and venting, see
chapter 4.
1. Controller setting 1. Adjust Controller settings.
2. Pump speed 2. Adjust speed of circula-
tion pump, see chapter 5.
Too high circulation pump Decrease speed of circula-
speed tion pump, see chapter 5.
Normal
operation
Normal
operation
1. Under voltage 1. Check voltage supply 195
U<160 V or Over voltage V < U < 253 V
U>253 V 2. Check water and ambient
2. Module overheating: temperature
temperature inside motor is
too high
Circulation pump does not Change circulation pump
restart by itself due to a per-
manent failure
1. Circulation pump is not 1. Check cable connection
connected to power supply 2. Check if circulation pump
2. LED is damaged is running
3. Electronics are damaged 3. Change circulation pump
Performance
2
seconds
Selected settings
10
seconds
OPERATION MODE
LED1
UPM3 xx-70
Green
PP1 PP1 ●
PP2 PP2 ●
PP3* PP3* ●
AUTOADAPT ●
Setting Menu
2
seconds
X
LED2 LED3 LED4 LED5
yellow yellow yellow yellow
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● ●
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