Adjusting The Self-Modulating Pumps; Disposal - Baxi MS THINK+ Installation Instructions Manual

6. ADJUSTING THE SELF-MODULATING PUMPS

The self-modulating pumps have a knob for enabling and disabling all the functions, and a LED indicator around the same knob.
The diagnostics and meaning of the light signals of the LED are indicated in the table below.
ZONE PUMPS
Turn the knob to (DP-v) and the pump regulates the speed by adjusting the DP according to the pressure loss of the system.
This adjustment is recommended for heating systems with radiators.
Turn the knob to (DP-c) and the pump regulates the speed while keeping the DP constant in relation to the pressure loss of
the system. This adjustment is recommended for floor heating systems.
Turn the knob to to enable the aeration function for eliminating air in the heating system. This function takes 10 minutes. The
pump then stops and enters stand-by mode, as indicated by the flashing green LED as described in the table below.
Colour of LED Meaning
Steady GREEN Normal operation.
Operation in degassing
mode:
Blinking GREEN
Faulty operation (the pump
Blinking RED/
starts but stops again
GREEN
immediately).
The pump does not start
Blinking RED
(e.g. it is blocked)
No LED lights The pump is not powered.

7. DISPOSAL

At the end of its lifetime, do not treat it as domestic waste but take it to the nearest appliance recycling plant. Disposal must be
performed according to current environmental waste disposal laws.
7222520.03 (1-11/15)
Degassing the system
p-v (variable) p-c (constant)
ZONE
PUMP
Diagnostics
The pump runs correctly.
The pumps runs for 10 minutes in
degassing mode, during which time
the installer regulates the flow of water
in relation to the pressure drop of the
plant.
The pump restarts automatically as
soon as the cause is resolved.
Reset the pump.
Check the LED.
There is no current at the terminals of
the pump.
Red/green LED
(diagnostics)
Fault
-
-
1) Input voltage too low/high:
<160V / >280V.
2) Overtemperature (°C): the pump
is overheated.
The pump cannot restart
automatically due to a permanent
fault.
1) The pump is not connected to
the mains power supply.
2) The LEDs are damaged.
3) The electronics of the pump are
damaged.
18
Solution
-
-
1) Check the supply voltage
value.
2) Check the temperature of
the water and/or room.
Replace the pump.
1) Check the electrical
connections of the wiring.
2) Check whether the pump is
turned on.
3) Replace the pump.