Owners Manual

9
Specifications subject to change without notice.
440 02 4501 00
BEFORE YOU REQUEST A
“SERVICE CALL”
If your furnace is not operating or not performing
properly, you may save the expense of a service call by
checking a few things yourself before calling for service:
This furnace has a light emitting diode (LED) status code
display to aid the installer, service technician, or homeowner
while installing or servicing the unit. The LED code can be
seen through the view port in the blower access panel.
NOTE: Record the LED status code BEFORE removing the
blower access door or turning off 115−V power to the furnace.
See the information booklet inside the main furnace door for a
service code legend (See Figure 7)
S Check for sufficient airflow. Check the air filter for dirt. Check
for blocked return−air or supply−air grilles. Be sure they are
open and unobstructed. If this isn’t the cause of the problem,
call your servicing dealer. If your furnace isn’t operating at all,
check the following list for easily solved problems:
S Is your thermostat set above room temperature? Is the HEAT
mode selected?
S Is the electrical power supply switch on? Is the blower access
door firmly in place? Are any fuses blown? (There is a fuse
on the furnace control.) Has a circuit breaker tripped?
S Is the manual shut−off valve in the gas supply pipe leading to
the furnace open? Does the lever point in the same direction
that the pipe runs (open)? Or is it at a right angle to the pipe
(closed)? NOTE: Before proceeding with the next checks,
turn off the electrical power supply to the furnace. Remove
access door.
S Is the switch on the gas valve turned to the ON position? If
this or the preceding check shows an interruption in the gas
supply, make sure the gas has not been shut off for safety
reasons. If nothing else seems to be wrong, follow the
start−up procedures found on page 4 of this booklet.
S Check the two manual reset rollout switches located on the
burner enclosure. (See Figure 1 ) If the furnace has
experienced a high−temperature condition due to
inadequate combustion air, these switches will shut off the
furnace. Reset the switches by pushing the button on the
switch. If the switch trips a second time, turn off the furnace
and call for service.
If your furnace still fails to operate, call your servicing dealer.
Provide your dealer the model and serial numbers for your
furnace. (You should have them recorded on the last page of
this booklet.) By knowing exactly which furnace you have, the
dealer may be able to offer suggestions over the phone or
save valuable time through knowledgeable preparation for the
service call.