Danfoss PAH 20

Open ended water systems
Trouble shooting
No water supply
.
Is the water supply ok?
.
Is water supplied to the pump?
.
Is water coming
out of the tap?
.
Are all taps open?
.
Is the electric motor of
the pump unit rotating?
.
Is the water in the tank
very hot? Ie above 50
o
.
Lower inlet
temperature or
provide better cooling
.
Is the control light
for “low pump suction
pressure” on?
.
The lter is clogging
.
Is the power supply ok?
.
Are control lights on?
.
Is the lter clogged?
.
Is the lter control
light on?
.
Is water coming
through the lter?
.
Replace lter element
.
Turn on the tap for
water supply
.
Replace lter element
.
A blown fuse / or short
circuit?
. Check power supply
and fuses and contact
electrician
Contact serviceman
Stamp
No
Yes
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes