Installation Data; Split-System; Indoor Coil; Regular Dealer Maintenance - Carrier 58DXT User's Information Manual

Gas furnace induced-combustion

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Operating instructions manual (24 pages)

Service and maintenance instructions (12 pages)

Table Of Contents

Table of Contents

• 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?

• Is the manual shutoff 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 doors.

• Is the control knob or switch on the gas valve turned to the

ON position? If this or the preceding check shows an interrup-

tion 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 startup procedures found on pages 4 and 5 of this booklet.

• 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 2 or 3 for

switch location.

If the switch trips a second time, turn off the furnace and call

for service.

• Downﬂow 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.

• Check the manual reset ﬂame rollout switch(es) located near

the burners. If the furnace has experienced a high-temperature

condition due to inadequate combustion air, these switches will

shut off the furnace. Reset the switch(es) 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 deal-

er for troubleshooting and repairs. Tell your dealer the model

and serial numbers for your furnace. (You should have them

recorded on page 8 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.

• Your furnace control board has an LED fault code light

that indicates the furnace status. The LED will ﬂash short and

long ﬂashes. Look through the sight glass on the furnace door

and determine the code (number of short and long ﬂashes). Give

the code and furnace model number to your dealer when you

call. By knowing exactly which furnace you have and the LED

code being displayed, your dealer can save valuable time

through knowledgeable preparation for the service call.

Regular dealer maintenance

In addition to the type of routine maintenance you might be

willing to do, your furnace should be inspected regularly by a

properly trained service technician. A semiannual inspection

(or annual inspection, at least) should include the following:

1. Inspection of all ﬂue product passages including the burn-

ers, heat exchanger, relief box, and vent pipe.

2. Inspection of all combustion and ventilation air

TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classiﬁed section of your local telephone directory under the

"Heating Equipment'' or "Air Conditioning Contractors & Systems'' heading for dealer listing by brand name.

Have available the Model No., Series Letter & Serial No. of your equipment to ensure correct replacement part.

Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, speciﬁcations or designs without notice and without incurring obligations .

•

7310 West Morris St.

Form: OM58-85

Replaces: OM58-71

passages and openings.

3. Close check of all gas pipes leading to and inside of your

furnace.

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 return-air ducts for obstruc-

tions, air leaks, and insulation. Any problems found should

be resolved at this time.

7. Inspect the return-air duct connection(s) at the furnace to

ensure it is physically sound, sealed to the furnace casing,

and terminates outside the space containing the furnace.

8. Inspection of furnace installation for proper support and any

obvious deterioration of the furnace. The support must be

sound and without sags, gaps, cracks, etc., around the fur-

nace base so as to provide an air seal between the support

and furnace.

9. A check for loose connections attaching individual compo-

nents. Inspection of all electrical wiring and their connections.

10. Operational check of the furnace itself to determine working

condition. Repair or adjustment should be made at this time.

Ask your servicing dealer for further details about an econom-

ical service contract that covers seasonal inspections.