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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 (pref-
erably each year, but at least every other year) should in-
clude the following:

1. Inspection of all flue product passages — including the

burners, heat exchanger, and flue collector box.

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

sages 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 drain

pan.

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 con-

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

Your servicing dealer may offer an economical service con-
tract that covers seasonal inspections. Ask for further
details.

Complete service instructions can be found in the unit
Installation, Start-Up and Service Instructions.

WARRANTY

The 658A warranty is located at the back of this book. Be
sure to read the warranty carefully to determine the cover-
age 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, check the following list for easy
solutions:

(

) Check to be sure that your thermostat temperature se-

lector is set above the indoor temperature during the heating
season, or below the indoor temperature during the cooling
season. Be sure the system switch is in the proper HEAT or
COOL position and not in the OFF position.

(

) Is the electrical supply switch ON? Are any fuses blown,

or has the circuit breaker tripped?

(

) During the heating season, check the external manual

shutoff valve. Is this lever parallel with the pipe, indicating
that the valve is open? Or is the lever at a right angle, indi-
cating 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

gas and then the electrical power supply to the unit. Remove
the control access door.

(

) During the heating season, check the control dial on the

internal gas valve. Is it in the ON position? If it is not, be
sure it was not turned off for safety reasons. If no safety haz-
ards exist, 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 valuable time through knowledgeable preparation for the
service call.

IN CASE OF TROUBLE

If after performing the above and unit performance is still
unsatisfactory, shut off the unit and call your dealer.

Dealer’s Name

Telephone

Unit Model

Unit Serial Number

FILTER ACCESS PANEL

Fig. 6 —Filter Access Panel — Vertical Supply Shown

—8—

Summary of Contents for 658A

Page 1: ...supplier FOR YOUR SAFETY WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas sup plier s instructions If you cannot reach your gas supplier call the fire department WARNING Before performing recom mended maintenance be sure gas supply and main...

Page 2: ... fort by running the fan continuously Air pockets can form due to the structure of the building placement of registers et cetera These air pockets may be too cool or warm for your liking Continuous fan operation minimizes any temperature differences Also systems equipped with electronic air clean ers and or humidifiers offer the added benefits of having the air continuously cleaned year round and ...

Page 3: ... operation Do not be alarmed if steam or fog appears at the outdoor unit during the defrost cycle Water vapor from the melting ice may condense into a mist in the cold outside air B Emergency Heat The EMERGENCY HEAT setting on your thermostat refers to supplementary gas heating that is included in your home comfort system Operation of the EMERGENCY HEAT source may be required if the heat pump malf...

Page 4: ...tting and set SYSTEM switch to OFF Step 2 Close the external manual shutoff valve Step 3 Turn off the electrical power supply to the unit Step 4 Remove the burner access panel Step 5 Turn the control dial on the internal gas valve counterclock wise to the OFF position Step 6 Replace the burner access panel Step 7 Restore electrical power to the unit and set SYSTEM switch to COOL to ensure operatio...

Page 5: ...tenance V CONDENSATE DRAIN The drain pan and condensate drain line should be checked and cleaned at the same time the cooling coils are checked by your dealer VI COMPRESSOR All compressors are factory shipped with a normal charge of the correct type refrigeration grade oil and should rarely re quire additional oil VII OUTDOOR FAN WARNING Do not poke sticks screwdrivers or any other object into rev...

Page 6: ...STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 7 STEP 8 STEP 9 STEP 10 Fig 4 To Light Unit 6 ...

Page 7: ...STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 7 Fig 5 To Shut Unit Off 7 ...

Page 8: ...s 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 check the following list for easy solutions Check to be sure that your thermostat temperature se lector is set above the indoor temperature du...

Page 9: ...DETACH AND MAIL PRODUCT REGISTRATION 9 ...

Page 10: ... 10 ...

Page 11: ... 11 ...

Page 12: ...Copyright 1995 Carrier Corporation CATALOG NO BDP 3365 801 ...

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