Grundfos UPM3 Instruction Manual

1. Introduction
The circulation pump can be externally controlled by a PWM A signal (profile for use in heating systems) or
PWM C (profile for use in solar thermal systems), or without a PWM signal (proportional pressure, constant
pressure, constant speed).
2. Pump control
When switched on, the pump runs at a default setting or at the last setting. The display shows its momentary
performance.
WARNING: LEDs may be turned by 180° - this depends on the specific pump type.
Performance display
* only when the pump is controlled by a PWM signal.
Fault display
seized pump
too low power supply voltage
electric fault
6

Grundfos UPM3 Specifications

General

Brand	Grundfos
Model	UPM3
Category	Water Pump
Language	English