18
English (US)
4.
Insufficient
heat
Light field is on.
a)
The pump
performance is set
too low.
Increase the pump speed or
constant pressure.
b)
The thermostat is set
too low or is not
working.
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.
c)
Air or gas in the
system.
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.
d)
The valves are
sticking.
Make sure all valves are in good
working order, i.e. remove lime
deposits.
e)
Wrong direction of
flow.
See the direction of flow arrow
marked on the pump.
Reinstall the pump to correct the
direction of flow.
f)
The boiler is not
working properly.
Check the water temperature from
the boiler and check the boiler
functions.
Repair the boiler if required.
g)
The pump
performance is not
adequate for the
application.
Check for proper sizing of the
circulator and other system
components.
h)
The pump
performance is not
adequate for the
application.
Check the
T calculation.
Fault
Control panel
Remedy
