Page 8
Fault Finding Chart
FAULT
INDICATION/CAUSE
CORRECTIVE
ACTION
1)No lights on the PM2
controller.
a)No electrical supply to Home
Booster.
a)Check mains isolator is ON.
Check the fuse in the plug or switched fuse isolator.
Confirm 240V between Live and Neutral
2)Pump runs for a short time,
then stops and red light
illuminates.
a)
b)
Pump air locked.
Storage tank empty.
a)
b)
Check that the pump is vented.
Check water level in storage tank.
Check incoming mains water supply.
Check ball valve for debris.
3)Pump On light illuminated on
PM2, but pump does not run.
a)
b)
Relay contact in PM2 defective.
Pump shaft seized.
a)
b)
Check electrical supply in pump motor terminal box. PM2 faulty if no voltage between Live
and Neutral terminals.
Check that pump shaft is free to rotate.
4)Pump stops, but starts again
after a few seconds.
a)Precharge pressure in vessel
incorrect.
a)Check vessel precharge pressure and adjust to 90% of cut-in pressure setting.
5)Pumps delivers correct
pressure, but does not stop
with no demand.
a)
b)
Pressure setting to high.
Flow demand or leak.
a)
b)
Check switch settings in PM2 controller.
Close outlet isolating valve, the pump should stop. If the pump stops, there is a system
flow which is keeping the pump running on the flow switch.
SPARES PARTS
Description Product
Code
Pump CHN 2-40
43602104
Pump CHN 2-60
43602106
PM2 Controller
96848740
8 Litre Pressure Vessel
96526321
Instruction Manual & Quick Guide Home Booster
Product code: 97653729
Revision 2
GRUNDFOS PUMPS LTD
Leighton Buzzard (Head Office):
Grovebury Road, Leighton Buzzard,
Bedfordshire LU7 4TL. Tel: 01525 850000, Fax: 01525 850011.
Domestic Building Services:
Leighton Buzzard, Bedfordshire Tel: 01525 775402, Fax: 01525 775236.
Commercial Building Services:
Leigh, Lancashire: Tel: 01942 263600, Fax: 01942 605970
Livingston, West Lothian: Tel: 01506 461666, Fax: 01506 461555.
Spares:
Tel: 01942 263490, Fax: 01942 603462.
Email: [email protected]
Grundfos Europump Ltd:
Tel: 01942 263628, Fax: 01942 602830.
REF: GB/HB/OM/DBS/04/10
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.
