Grundfos UPM3 Quick Guide

Domestic water
circulation
Radiator heating, one-pipe system
Pump does not function, no power. Check that:
A the power plug is plugged in,
B the switch is turned on.
5. The LED is lit – An axle or impeller is stuck. To release
the axle/impeller, press on the screw in front of the pump
and turn it using a screw driver.
4. The LED is lit – Supply voltage too low
Check the supply voltage.
3. The LED is lit – Supply voltage too low, severe
malfunction
Check the supply voltage. Replace the pump.
TROUBLESHOOTING
FAULT DISPLAY
SOLUTION
RECOMMENDATION SETTING INDICATION
We recommend you use heating system specific energy optimised
pump functions. Please see instructions on page 1.
Constant curves for fixed rotation speed
Page
2
ALARM STATUS
FAULT
BLOCKED
LOW VOLTAGE
ELECTRICAL ERROR

Grundfos UPM3 Specifications

General

Type	Circulator Pump
Category	Water Pump
Max Flow Rate	3.5 m³/h
Voltage	230 V
Frequency	50/60 Hz
Protection Class	IP44
Maximum Operating Pressure	10 bar
Housing Material	Cast Iron
Control Mode	Constant Pressure, Constant Curve
Power Input	3 to 45 W
Motor Power	0.55 kW
Energy Efficiency Index	≤ 0.20
Impeller Material	Composite
Application	Heating systems