Carrier 58RAP - Manual (Page 10)

A WARNING
If holes are found—or if the vent pipe is obstructed or is not
connected^—toxic fumes can escape into your home. DO
NOT OPERATE YOUR FURNACE. Call your dealer for
service. A failure to follow this warning could result in per­
sonal injury or death.
4. Replace the access doors and restore electrical power to
the furnace. Be sure bottom door flange is inside of the fur­
nace casing. (See Fig. 15,16, and 21.)
5. Start the furnace and observe its operation. If possible,
watch the burner flames. Are they burning bright blue? If
not (or if you suspect some other malfunction), call your
servicing dealer.
BEFORE YOU REQUEST A
SERVICE CALL
BEFORE YOU CALL FOR SERVICE, CHECK FOR
SEVERAL EASILY SOLVED PROBLEMS:
□ Check for sufficient airflow. Check the air filter for dirt.
Check for blocked retum-air or supply-air grilles. Be sure they
are open and unobstructed. If this isn't the cause, call your
servicing dealer.
If your furnace isn’t operating at all, check the following list for
easily solved problems:
□ Is your thermostat set above room temperature? Is the
switch in the HEAT position?
O Is the electrical power supply switch ON? Is the blower ac­
cess door firmly in place? Are any fuses blown—has a circuit
breaker tripped? (There is a fuse on the furnace control board.)
□ 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 right angles (closed)?
NOTE: Before proceeding with the next checks, turn OFF the
electrical power supply to the furnace. Remove the control ac­
cess door. The blower access door must be installed to permit
furnace operation. On downflow furnaces, the blower access
door must be removed before the control access door is re­
moved, then reinstalled.
n Is the control knob on the gas valve turned to the ON posi­
tion? 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,
□ Check for pilot flame. If there is no pilot flame, follow the
manual start-up procedures or the furnace lighting instruction
label. If the pilot flame exists, check the control knob on the gas
valve. If the knob is in the PILOT position, turn it to ON and
complete the start-up procedures.
□ If for some reason the vent is blocked, the draft safeguard
switch will shut off the furnace. Reset the switch by pushing the
button located on top of the switch (see page 3 for switch
location).
If the switch trips a second time, turn off the furnace and call
for service.
□ DOWNFLOW FURNACE ONLY—Check the manual-reset
auxiliary limit switch located on the blower housing. If the
blower motor fails, this switch will shut off the furnace. Reset it
by pushing the button on the switch. If it trips again, turn off
the furnace and call for service.
□ If your fiimace still fails to operate, call your servicing dealer
for troubleshooting and repairs. Tell them the model and serial
numbers for your furnace. (You should have them recorded on
page 2 of this booklet.) If the dealer knows exactly which fur­
nace you have, they may be able to offer suggestions over the
phone, or save valuable time through knowledgeable prepara­
tion for the service call.
REGULAR DEALER MAINTENANCE
In addition to the type of routine maintenance you might be
willing to do, your fiirnace should be inspected regularly by a
properly trained service technician. An annual inspection (or
every other year, at least) should include the following:
1. Inspection of all flue product passages—including the
burners, pilot and pilot tube, heat exchanger, relief box,
and vent pipe.
2. Inspection of all combustion and ventilation air passages
and openings.
3. Close check of all gas pipes leading to (and inside of) your
furnace for leaks and/or deterioration.
4. Inspection, cleaning, and lubrication (when required) of
the blower motor and wheel.
NOTE: Refer to the unit service procedures for blower motor
oiling information. When required, the motor must be oiled by
a qualified service technician.
5. Routine inspection and cleaning/replacement of the air
filter.
6. Inspection of all supply- and retum-air ducts for obstmc-
tions, air leaks, and insulation. Any problems found
should be resolved at this time.
7. A check for loose connections attaching individual compo­
nents. Inspection of all electrical wiring and their
connections.
8. Operational check of the furnace itself to determine work­
ing condition. Repair or adjustment should be made at
this time.
9. Check the physical support around the furnace base for
cracks, gaps, sagging etc. Ensure there is a good air seal be­
tween the furnace and support.
10. Check burner and pilot flames. Compare flames to Fig. 24
for proper operation.
Your servicing dealer offers an economical service contract that
covers seasonal inspections. Ask him for further details.