Daikin Rebel DPS003A, Руководство по установке и обслуживанию, Страница: 44 / 122

Auxiliary Limit Switch Function
The auxiliary limit switch is a manually resetable switch and is
designed to trip in the event of a supply fan failure. It should not
trip during any other conditions. In the event of a blockage to the
return or discharge air, the primary limit, which is an automatic-
reset type, is designed to trip.
Should there be a fan failure which results in the tripping of the
auxiliary limit, the limit must be manually reset to resume function
of the unit.
On the Rebel A cabinet (3-6 ton), the auxiliary limit resides in
the fan compartment between the furnace heat exchanger and
the fan. To access the switch, the fan compartment door must
be opened. Be sure all power to the unit is disconnected before
opening the fan compartment door.
Once the fan compartment door is opened the auxiliary limit
switch can be found behind the supply fan on a bracket mounted
to the cabinet wall.
Depressing the red button on the auxiliary limit will reset the limit
and allow the furnace to be powered. The furnace should now
respond to a call for heat.
Again, the red button must be depressed in order to reset the limit
and allow the furnace to be powered.
Figure 42: 3–6 Ton—Auxiliary Limit Switch
Figure 43: 7–15 Ton—Auxiliary Limit Switch
Figure 44: 016–028 Auxiliary Switch
View of supply fan
with aux limit behind,
mounted on a bracket
off the cabinet wall
The auxiliary limit on the
B cabinet (7-15 ton) is in
the furnace compartment
(vestibule) above the furnace
The auxiliary limit
on the C cabinet
(17-28 ton) is in
the compressor
compartment above
the furnace vestibule .
The red button of
auxiliary limit switch
must be depressed in
order to reset the limit
and allow the furnace
to be powered .
IM 1125-7 • REBEL ROOFTOPS 44 www.DaikinApplied.com
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