Grundfos ALPHA1 Instrucciones De Instalación Y Operación página 15

Fault Control panel
4. Insufficient The light field is
heat on.
a) The pump
performance is set
too low.
b) The thermostat is set
too low or is not
working.
c) Air or gas in the
system.
d) The valves are
sticking.
e) Wrong direction of
flow.
f) The boiler is not
working properly.
g) The pump
performance is not
adequate for the
application.
h) The pump
performance is not
adequate for the
application.
Remedy
Increase the pump's constant
pressure setting.
Check to see if the circulator is in
the proper operating mode.
Check the thermostat to ensure
that it is set to the desired
temperature and is working.
Replace the batteries in the
thermostat.
Vent the air or gas from the system
by allowing the pump to run, as it
will vent over time.
Install an air eliminator.
If necessary rework the piping.
Make sure all valves are in good
working order, that is remove lime
deposits.
See the direction of flow arrow
marked on the pump.
Reinstall the pump to correct the
direction of flow.
Check the water temperature from
the boiler and check the boiler
functions.
Repair the boiler if required.
Check for proper sizing of the
circulator and other system
components.
Check the T calculation.
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