Carrier 58MVP Service And Maintenance Instructions page 14

Blower access panel door switch opens 115-v power to
control center. No component operation can occur unless
switch is closed. Caution must be taken when manually
closing this switch for service purposes. Failure to follow this
warning could result in electrical shock, personal injury, or
death.
b. When items (1) through (5) above have been completed,
the following will occur:
→
(1.) Inducer motor operates at medium speed through step
(3), then turns off.
(2.) After waiting for 15 seconds, hot surface igniter is
energized for 15 sec, then de-energized.
(3.) Main blower motor operates at midrange airflow for
15 seconds, then turns off.
(4.) After component operation test is completed, 1 or
more fault codes (11, 25, 41, or 42) will flash. See
service label on back of main furnace door or Fig. 15
for explanation of codes.
NOTE: To repeat component test, turn setup switch SW1-6 to
OFF and then back to ON.
c. After component test, perform the following:
(1.) Remove tape to release blower access panel door
switch and turn setup switch SW1-6 to OFF position.
(2.) Replace blower access panel.
(3.) Operate furnace through 1 heat cycle to check for
proper operation and check LED status.
(4.) If furnace is operating properly and LEDs indicate
proper operation, replace main furnace door.
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