Page 26
SERVICING AND MAINTENANCE
FAULT FINDING
Check pump electrical circuits
LED
Meaning
Diagnosis
Cause
Remedy
Lights green
Normal running
Pump runs according
PWM input
Normal operation
n/a
Blinks quick green
Normal stopped
Pump in standby
n/a
Blinks red/ green
Abnormal running mode
-pump stopped but still
functional
The pump has stopped
due to external failure
Pump restarts by itself
after the fault has
disappeared
Under voltage U<160 V
or
Over voltage U>253 V
Check voltage supply
195 V <U< 253 V
Pump overheating:
temperature inside motor
too high
Check water and
ambient temperature
Over speed:
the pump rotor is driven
by an external flow above
the maximum allowed
value
Ensure that there is no
other external flow (other
pump running) on
system
Over current:
the stator winding is in
short circuit due to water
Check for leakage
application on
application
Overload of motor:
friction due to particles
and/or impeller blocked
with debris
Check installation water
quality, clean system if
debris
Blinks red
Pump out of function
Pump stopped (blocked)
Blockage:
the pumps is fully
blocked due to debris in
system
Check for blockage.
Turn ON/OFF to reset
the pump by unplugging
the power supply
If the pumps still blinking
red after a power reset
then replace the pump
Faulty electronic module
and/or faulty motor
LED off
No power supply
No voltage on electronics Pump is not connected to
power supply
Check cable connection
LED is damaged
Check if pump is running
Electronics are damaged
Replace pump
Check plumbing components
CW In line filter
Isolate the CW mains supply at the servicing valve
Open HW taps to relieve the pressure
Undo securing nut ensuring that any remaining water is collected
Remove filter and clean it
The flow regulator can be checked at the same time by removing the upper pipe section.
Thermal store return
check valve + return
servicing valve
Isolate both servicing valves
Drain water from the section between the servicing valves
Remove the bottom pipe section
Check for free movement of the check valve incorporated in the body. Remove and replace if the check
valve sticks.
Summary of Contents for PulsaCoil PCS 150 ECO
Page 29: ...Page 29 APPENDIX APPENDIX B ...
Page 31: ...Page 31 NOTES NOTES ...
