Closed Water Systems Troubleshooting - Danfoss APP series User Manual

Trouble shooting
Closed water systems
No
.
Fill water into the system
.
Trace leakage, if any
56
.
Is there sufficient water
in the tank?
Yes
.
Is the electric motor of
No
the pump unit rotating?
Yes
.
A blown fuse/or short
circuit?
.
Check power supply
and fuses and contact
electrician
180R9265 / IOM APP 16-22 Appendices - v02 / 01.2013
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?
.
.
Contact serviceman
Yes
o
No
Yes
Is the filter clogged?
Yes
Is the filter control
light on?
No
.
At temperatures
o
higher than 50 the
pump drive cuts out.
Consequently the
cooler must be
checked/cleaned
.
Replace filter element
Stamp