Carrier 48PG20---28 - Manual (Page 7)

7
LOCK-OUT
TAG
ON
OFF
MAIN
STEP 1 STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
OFF ON
CONTROL I.D.
LABEL
1/4˝ X .032˝ MALE SPADE
TERMINALS (2) COMMON
SWITCH (SHIPPED IN
“ON” POSITION)
C09578
Fig. 4 -- To Shut Unit Off
Step 1 — Turn off the unit demand for cooling or heating by
using the Scrolling Marquee. The Scrolling Marquee is located in
the control box at the compressor end of the unit.
a. Push the ESCAPE key until a blank display screen is
shown.
b. Push the DOWN arrow key until the SERVICE TEST
LED is lit.
c. Push the ENTER key. The display will show TEST.
d. Push the ENTER key again. The NO/YES display will
flash.
e. Push the UP or DOWN key to toggle the display to
YES and then push ENTER . The unit will be locked
off from heat, cooling or any operation. The controls
will still function and the display will still operate.
NOTE: A password may be required to change Service Test
values depending on previous settings configured in the unit.
Default password is “1111.”
Step 2 —
Close the external gas pipings manual shut off valve
located outside the unit.
Step 3 —
Turn off the electrical power supply to the unit and
install lockout tag.
Step 4 — Remove the heat section access panel.
Step 5 — Turn the control dial on the main gas valve
counterclockwise to the OFF position.
Step 6 — Replace the heat section access panel.
Step 7 —
If unit is being shut down because of a malfunction,
call your dealer as soon as possible.