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- 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 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 the right angle, in-
dicating 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. Remove the gas sec-
tion access door.
( ) During the heating season, check the control dial on the
gas valve. Is it in the ON position? If it is not, be sure it has
not been turned off for the purpose of safety. If no safety
hazards are present, 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 checks, unit performance is
unsatisfactory, shut off the unit and call your dealer.
Dealer’s Name
Telephone No.
Unit Model
Unit Serial Number
Copyright 1998 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 1
Tab 1a 1c
PC 111 Catalog No. 564-920 Printed in U.S.A. Form 48-13SO Pg 8 3-98 Replaces: 48-12SO
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