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WARNING
400 VOLTS
ELECTRICAL HAZARD
Failure to follow this warning
could result in personal
injury or death.
WAIT TWO (2) MINUTES
after disconnecting power
prior to touching electrical
components as they may
hold a dangerous charge of
400VDC, then verify DC
Voltage is less than 42 VDC at
inverter test points labeled
+VDC and -VDC before
servicing board.
+VDC
-VDC
W W A A R R N N I I N N G G
H H A A Z Z A A R R D D O O U U S S V V O O L L T T A A G G E E ! !
V V o o l l t t a a g g e e m m a a y y b b e e p p r r e e s s e e n n t t w w i i t t h h p p o o w w e e r r d d i i s s c c o o n n n n e e c c t t e e d d d d u u e e
t t o o h h i i g g h h w w i i n n d d s s c c a a u u s s i i n n g g f f a a n n r r o o t t a a t t i i o o n n . . S S e e e e S S e e r r v v i i c c e e F F a a c c t t s s
o o r r T T e e c c h h n n i i c c a a l l M M a a n n u u a a l l f f o o r r s s e e r r v v i i c c i i n n g g i i n n s s t t r r u u c c t t i i o o n n s s . .
I I m m p p o o r r t t a a n n t t : : It may be necessary to block prevailing
winds through unit to stop fan rotation
before servicing.
N N o o t t e e : : See AHRI directory for approved indoor and
outdoor model combinations. Only Trane coils
and air handlers/furnaces are approved for use
with variable speed outdoor units.
4TWL9048A-SF-1C-EN
S S a a f f e e t t y y S S e e c c t t i i o o n n - - V V S S P P D D S S i i d d e e D D i i s s c c h h a a r r g g e e
- VDC
&
+VDC
I I m m p p o o r r t t a a n n t t : : Use caution when cleaning outdoor coil to
ensure no water enters the electrical
control compartment. When cleaning coil,
take special care not to spray water
towards the control panel. Water may enter
the control compartment and drive
damaging the electronics. Disconnect all
electric power, including remote
disconnects before servicing.
Table 1. Operating Range
3
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