IST M40 - Vacuum Will Not Stop

28
Troubleshooting
TrOubleshOOTinG
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Vacuum will not stop Hose improperly
inserted into vacuum
inlet
Ensure that the hose
end is properly placed
in the vacuum inlet: the
tab on the hose should
t into the slots on the
inlet, to ensure adequate
contacts for the hose
switch to function (see
page 16).
Defective on/off hose If the hose is properly
placed in the vacuum
inlet, and the unit
continues running
despite the fact that
the hose switch is in
the “off” position, have
the hose checked by a
service center.
Low voltage wire not
connected properly
While vacuum is on,
unplug low voltage
wires from unit. If
vacuum stops, there’s a
faulty low voltage wire.
Contact your installer
or authorized service
center.