Carrier 48ES Owner's Manual download pdf (Page 9)

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury, death and/or property damage.

If your unit makes an especially loud noise when the main

burners are ignited, shut down the heating section and call

your dealer.

WARNING

BURN HAZARD

Failure to follow this caution may result in personal injury .

Components in heating section may be hot after unit has

been started up. When observing flame, be careful not to get

close to or touch heating components.

CAUTION

Regular Dealer Maintenance

In addition to the type of routine maintenance you might be willing

to perform, your unit should be inspected regularly by a properly

trained service technician. An inspection (preferably each year, but

at least every other year) should include the following:

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

ers, heat exchanger, and flue collector box, Mare sure the

burner flames are blue in color and in proper adjustment.

Refer to Fig. 11 for burner flame.

2. Inspection of all combustion--and ventilation--air passages

and openings.

3. Close inspection of all gas pipes leading to and inside of

your unit.

4. Inspection and, if required, cleaning of the outdoor and

indoor coils.

5. Inspection and, if required, cleaning of the indoor coil con-

densate drain pan.

MANIFOLD

BURNER

BURNER FLAME

C99021

Fig. 11 -- Monoport Burner

6. Inspection and cleaning of blower wheel housing and

motor.

7. Inspection of all supply--air and return--air ducts for leaks,

obstructions, and insulation integrity. Any problems found

should be resolved at this time.

8. Inspection of the unit base to ensure that no cracks, gaps,

etc., exist which may cause a hazardous condition.

9. Inspection of the unit casing for signs of deterioration.

10. Inspection of all electrical wiring and components to assure

proper connection.

11. Inspection for leaks in the refrigerant circuit. Pressure

check to determine appropriate refrigerant charge.

12. Operational check of the unit to determine working

conditions. Repair or adjustment should be made at this

time.

Your servicing dealer may offer an economical service contract that

covers seasonal inspections. Ask for further details.

Complete service instructions can be found in the unit Installation,

Start--up and Service Instructions.

Warranty Certificate

Your unit has a limited warranty. Be sure to read the warranty

carefully to determine the coverage for your unit.

Before you call for service...

...check for several easily--solved problems.

If insufficient heating or cooling is suspected:

( ) 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 these checks do not reveal the cause, call your

servicing dealer.

If your unit is not operating at all, check the following list for

easy solutions:

( ) Check to be sure that your thermostat temperature selector is

set below the indoor temperature during the cooling season or

above the indoor temperature during heating season. Be sure the

SYSTEM switch or MODE control is in the COOL or HEAT

position and not in the OFF position.

( ) If your unit still fails to operate, call your servicing dealer for

troubleshooting and repairs. Specify the model and serial numbers

of your unit. (Record them in this manual in the space provided.) If

the dealer knows exactly which unit you have, he may be able to

offer suggestions over the phone, or save valuable time through

knowledgeable preparation for the service call.

In Case of Trouble

If you perform the steps above and unit performance is still

unsatisfactory, shut off the unit and call your dealer.

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Carrier 48ES Owner's Manual Page 9

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