Danfoss APP Series Installation, Operation And Maintenance Manual page 118

Trouble shooting
Operation guide
Closed water systems
No
.
Fill water into the system
.
Trace leakage, if any
118 | 180R9346 | AQ240486503020en-001702
Installation, Operation and Maintenance APP 53-92 pumps
.
Is there sufficient water
in the tank?
Yes
.
Is the electric motor
No
of the pump unit
rotating?
Yes
.
A blown fuse/or short
circuit?
.
Check power supply
and fuses and contact
electrician
The system
does not work
.
Is the water in the tank
very hot? Ie above 50
.
Is the power supply ok?
No
.
Are control lights on?
Yes
o
No
.
Yes
.
Is the filter clogged?
.
Yes
Is the filter control
light on?
No
Contact serviceman
© Danfoss | DCS-SGDPT/SI | 2023.03
At temperatures
o
higher than 50 the
pump drive cuts out.
Consequently the
cooler must be
checked/cleaned
.
Replace filter
element
Stamp