Owners Manual

8
441 02 2401 04
Specifications subject to change without notice.
BEFORE YOU REQUEST A
“SERVICE CALL”
Before you call for service, check for several easily
solved problems:
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 pages 4 and 5 of this booklet.
UNIT OPERATION HAZARD
Failure to follow this caution may result in personal
injury.
If for some reason the vent is blocked, the draft
safeguard switch will shut off the furnace. (See furnace
components for switch location.) The switch will
automatically reset after the furnace cools off. If the
furnace fails to operate, contact a qualified service
agency.
CAUTION
!
S Check the manual reset limit switches located on the ends
of the burner enclosure (see Figure 1 and Figure 2). 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.
S If your furnace still fails to operate, call your servicing dealer
for troubleshooting and repairs. Tell 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.