441 01 3700 00
Specifications are subject to change without notice.
34
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, or death.
Blower access door switch opens 115--v power to control.
No component operation can occur unless switch is closed.
Caution must be taken when manually closing this switch
for service purposes.
!
WARNING
1. Purge gas lines after all connections have been made.
2. Check gas lines for leaks.
3. To Begin Component Self--Test:
Remove Blower Access Door. Disconnect the thermostat
R lead from furnace control board. Manually close blower
door switch. Turn Setup DIP switch SW1--6 ON. (See Fig.
26, 48 and Table 46.)
NOTE
: The furnace control allows all components, except the
gas valve, to be run for short period of time. This feature helps
diagnose a system problem in case of a component failure.
Component test feature will not operate if any thermostat signal is
present at the control.
Refer to service label attached to furnace or See Fig. 45.
Component test sequence is as follows:
a. Inducer motor starts and continues to run until Step d.
of component test sequence.
b. Hot surface igniter is energized for 15 sec., then off.
c. Blower motor operates for 15 sec.
d. After component test is completed, status code
heart-
beat
will flash. See component test section of service
label (Fig. 45) in furnace for explanation of status
codes.
NOTE
: To repeat component test, turn setup switch SW1--6
OFF, then back ON.
4. Turn setup DIP switch SW1--6 OFF. Reconnect R lead to
furnace control board, release blower door switch and re-
install blower access door.
5. Operate furnace per instruction on inner door.
6. Verify furnace shut down by lowering thermostat setting
below room temperature.
7. Verify furnace restarts by raising thermostat setting above
room temperature.
A190203
Fig. 45 -- Service Label
