Carrier 48ES manual To Shut-offUnit Electric Cooling, Monoport Burner, Before you call for service

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STEP1	STEP2	STEP3
		A07797
Fig. 7 - To Shut-off Unit Electric Cooling
BURNER FLAME	Warranty	Certificate
	Your unit	has a limited warranty. Be sure to read the warranty care-
BURNER	fully to determine the coverage for your unit.

MANIFOLD

C99021

Fig. 8 - 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.

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 posi- tion 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 unsatis- factory, shut off the unit and call your dealer.