Carrier 48TJE004-014 - Manual (Page 7)

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 re­
veal 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 above the indoor temperature during the heat­
ing season, or below the indoor temperature during the cool­
ing season. Be sure the SYSTEM switch in the proper HEAT,
COOL or AUTO, 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 man­
ual shutoff valve. Is this lever parallel with the pipe, indi­
cating that the valve is open? Or is the lever at a right an­
gle, 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 dial on
the gas valve. Is it in the ON position? If it is not, be sure
it has not been turned off for safety reasons. If no safety
hazards are present, follow the stait-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 man­
ual 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 prep­
aration for the service call.
IN CASE OF TROUBLE
If, after performing the above, unit performance is un­
satisfactory, shut off the unit and call your dealer.
Dealer’s Name. __ _____________________________________
Telephone No. ______________________________________ __
Unit Model ___________________________________________
Unit Serial Number .____________________________________