Trouble shooting
Closed water systems
The system
does not work
.
Is there sufficient water
in the tank?
No
Yes
No
No
No
Yes
Yes
Yes
Yes
.
Is the water in the
tank very hot? Ie
above 50
o
.
Is the power supply
ok?
.
Are control
lights on?
.
Is the filter clogged?
.
Is the filter control
light on?
.
Replace filter ele-
ment
Contact serviceman
Stamp
.
Fill water into the
system
.
Trace leakage, if any
.
A blown fuse/or
short circuit?
.
Check power sup-
ply and fuses and
contact electrician
.
At temperatures
higher than 50
o
the
pump drive cuts
out. Consequently
the cooler must be
checked/cleaned
.
Is the electric motor
of the pump unit
rotating?
No
Summary of Contents for APP W HC Series
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Page 61: ...Service guide Trouble shooting guide APP APP S and APP S 674 pumps ro solutions com...
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