FAULT FINDING
PRESSURE HIGH
The system pressure has exceeded the Pressure-High Alarm. The
pumps will STOP until the pressure drops below the Pressure-High Alarm
OFF Level.
Check that the Pressure-High Alarm setting has not been set too low.
Check that the capacity of the expansion tanks is adequate for the
system.
Check that the pre-charge pressure has been set correctly.
PRESSURE LOW
The system pressure has dropped below the Pressure-Low Alarm setting.
This will NOT stop the pumps from running unless the Water Leak alarm
has
cut
in.
PUMP A FAULT
PUMP B FAULT
Indicates that either the pump-Overload has tripped (ADVANCED model)
or the respective Pump FUSE has blown.
PUMP TEST FAILURE
PUMP A FAULT
PUMP B FAULT
Displayed along with a respective indication of which pump has failed the
pump test.
Check whether the pump shaft is free to turn.
Check that the pumps are vented.
SENSOR ERROR
Pressure sensor fault.
Check the cables to the pressure sensor.
SERVICE
DUE
The
unit
has
reached
the
SERVICE
DUE
interval.
It
is
important
that
an
engineer
attends
site
to
ins
pect
the
unit, as soon as possible.
SYSTEM
FAILURE
Can
be
displayed
along
with
SENSOR
ERROR
-
in
this
case
check
the
Sensor
or
it's
Cabling
FIRST.
If
displayed
just
on
its
own,
then
the
controller could be faulty. Replace as a module.
SYSTEM LOCK
Indicates the System has been Locked from operating.
WATER LEAK
The pumps have exceeded the maximum time they are allowed to run in
any
given
hour.
Reset
this
alarm
by
Powering-OFF
and
back
again.
WATER LOW
Sensor (Float Switch), low water level in break tank.
Check water level. Check ball valve, if level is low.
Check wiring to float switch if level is OK.
WATER LOW
WATER REFILLING
This not a fault condition, but is for information, and indicating that the
water
has
now
satisfied
the
Sensor/Float
but
the
controller
is
allowing
the tank to refill before operating the pump again. See the Water Low
Reset user Set-Up option, for the reset time.
GRUNDFOS PUMPS LTD
Commercial Building Services
Southern & Northern Region: Tel: 08707 503888, Fax: 01942 605970
Scottish & N. Ireland Region: Tel: 01506 461666, Fax: 01506 461555
Domestic Building Services
Tel: 01525 775402, Fax: 01525 775236
Spares
Tel:
01942
263490,
Fax:
01942
603462
Email:
Service
Mobile Service : Tel: 08450 508100, Fax: 01942 602830
Service Workshop (Leigh): Tel: 01942 263627, Fax: 01942 603462
Office Addresses
Southern
(Head)
Office:
Grovebury
Road,
Leighton
Buzzard,
Beds.
LU7
4TL. Tel: 01525 850000 Fax: 01525 850011
Northern Office:
Orford Court, Greenfold Way, Leigh, Lancs. WN7 3XJ
Scotland & N. Ireland Office:
Flemming Road, Kirton Campus, Livingston,
West Lothian, Scotland EH54 7BN.
General Sales Enquiries:
Grundfos Group Website:
www.grundfos.com
It
is
the
continuing
policy
of
Grundfos
to
develop
and
improve
our
products,
and
we
reserve the right to amend prices and specification without prior notice.
REF: GB/IMPRESS I&O/CBS/1007
