Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 534-80017
Printed in U.S.A.
Form 48HJ-2SO
Pg 8
11-00
Replaces: 48GJ,HJ-1SO
Book 1
4
Tab
1a 6a
Copyright 2000 Carrier Corporation
BEFORE YOU CALL FOR SERVICE,
CHECK FOR PROBLEMS
THAT CAN BE EASILY SOLVED
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 selec-
tor is set above the indoor temperature during the heating sea-
son, or below the indoor temperature during the cooling
season. Be sure the SYSTEM switch 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, 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. Remove the control access
door.
(
) During the heating season, check the control switch 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 haz-
ards 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 valu-
able 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 _________________________________
