Regular Dealer Maintenance, Case of Trouble

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 burners, heat exchanger, flue collector box, and vent pipe.

2.Inspection of all combustion-air and ventilation-air pas- sages and openings.

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

4.Adjustment of the air/gas mixture if the burner flames are not bright blue. (See Fig. 4 and 5 for location of access panel and proper flame appearance.)

5.Inspection, and if required, cleaning of the condenser and evaporator coils.

6.Inspection, and if required, cleaning of the evaporator drain pan.

7.Inspection, cleaning, and lubrication of blower wheel housing and motor.

8.Inspection of all supply-air and return-air ducts for leaks, obstructions, and insulation integrity. Any problems found should be resolved at this time.

9.Inspection of the unit base to ensure that no cracks, gaps, etc., exist which may cause a hazardous condition.

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

11.Inspection of all electrical wiring and components to assure proper connection.

12.Inspection for leaks in the refrigerant circuit. Pressure- check to determine appropriate refrigerant charge.

13.Operational check of the unit to determine working con- ditions. Repair or adjustment should be made at this time.

14.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 base unit Controls, Start-Up, Operation, Service and Troubleshooting literature.

BEFORE YOU CALL FOR SERVICE, CHECK FOR SEVERAL EASILY SOLVED PROBLEMS

If insufficient heat or cooling is suspected:

( ) Check for sufficient airflow. Check the air filters for dirt. Check for blocked return-air or supply-air grilles. Be sure they are open and unobstructed. Be sure heating and cooling set points are correct. 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 heating temperature set point is set above the indoor temperature during the heating season, or that cooling temperature set point is below the indoor temperature during the cooling season. Be sure the unit on/off switch is in the ON position and not in the OFF position. Be sure unit has been programmed with the appropriate time schedules and desired operating set points.

( ) Is the electrical supply switch ON? Are any fuses blown, or have any of the circuit breakers tripped?

( ) During the heating season, check the manual shutoff valve. Is this lever parallel with the pipe, indicating that the valve is open? Or is the lever at a right angle, indicating that the valve is closed? If closed, has the gas been shut off for safety reasons? Otherwise, you may open the valve and follow the start-up procedures listed in this manual.

NOTE: Before proceeding with the next check, turn OFF the electrical power supply to the unit. Open the control access door.

( ) During the heating season, check the control switch on the gas valve. It is in the ON position? If it is not, be sure it has not been turned off for the purpose of safety. Follow the start- up procedures in this manual.

( ) 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 valu- able time through knowledgeable preparation for the service call.

IN CASE OF TROUBLE

If, after performing the above, unit performance is unsatis- factory, shut off the unit and call your dealer.

Dealer’s Name _____________________________________

Telephone No. _____________________________________

Unit Model ________________________________________

Unit Serial Number _________________________________

Unit Address ______________________________________

Bus Number _______________________________________

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

Catalog No. 04-53480054-01

Printed in U.S.A.

Form 48P-1SO

Pg 8

4-09

Replaces: New

P4, 48P2, P3, P5030-100 specifications

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