Fault Finding Chart - Grundfos UPS 200 Serie Manual Del Usuario

4. Fault finding chart

Warning
Before removing the terminal box cover, make sure that the electricity supply has been
switched off and that it cannot be accidentally switched on.
Fault
1. The pump does not run.
None of the indicator lights
are on.
2. The pump does not run.
The green indicator light is
on.
3. The pump does not run.
The red indicator light is on.
The green indicator light is
off.
4. The pump is running.
The red indicator light is on.
The green indicator light is
on.
5. Noise in the system.
The green indicator light is
on.
6. Noise in the pump.
The green indicator light is
on.
7. Insufficient heat in some
places in the heating
system.
5. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
6
Cause
a) One fuse in the installation is
blown.
b) External mains switch
switched off.
c) Current-/voltage-operated
earth-leakage circuit breaker
has tripped out.
a) Rotor blocked, but the pump
has not been cut out by the
thermal overload switch.
a) The pump has been cut out
by the thermal overload
switch due to high liquid
temperature or blocked rotor.
b) The speed switch module has
not been fitted.
a) The pump is running with
wrong direction of rotation
(only three-phase pumps).
a) Air in the system.
b) The pump flow is too high.
c) The pressure is too high.
a) Air in the pump.
b) The inlet pressure is too low.
a) The pump performance is too
low.
Subject to alterations.
Remedy
Replace the fuse.
Switch on the mains switch.
Repair insulation defects and cut in
the circuit breaker.
Switch off the electricity supply and
clean/repair the pump.
Check that the liquid temperature
falls within the specified range.
The pump will restart automatically
when it has cooled to normal
temperature.
Switch off the electricity supply by
means of the external mains switch
and fit the speed switch module.
Switch off the electricity supply by
means of the external mains switch
and interchange two phases in the
terminal box.
Vent the system.
Reduce the pump performance
(change to lower speed).
Reduce the pump performance
(change to lower speed).
Vent the pump.
Increase the inlet pressure and/or
check the air volume in the
expansion tank (if installed).
Increase the pump performance
(change to higher speed), if possible,
or replace the pump with a pump
with a higher flow.