Electrical Controls and Wiring
Electrical contlols are di_iicult to check without proper instrumen=
rations. If there are any discrepancies in the operating cycle,
contact your dealer and request service
Refi'igerant Circuit
The refi'igerant circuit is difficult to check for leaks without the
proper equipment. If inadequate cooling is suspected, contact your
tocal dealer fbr service.
System under pressure. Relieve pressure and recover all
refi'igerant before system repair or final unit disposal to avoid
serious injury or death. Use all service ports and open all
flow°control devices, including solenoid valves.
Unit Panels
After per%truing any maintenance or service on the unit, be sure
all panels are fastened securely in place to prevent rain from
entering unit cabinet and to prevent disruption of the correct unit
airflow pattern.
REGULAR DEALER MAINTENAN(E
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 eve N " other year) should include the following:
1. Inspection and, if required, cleaning of the outdoor and indoor
coils.
2. Inspection and, if required, cleaning of the indoor coil &ain
pan.
3. Inspection and cleaning of blower wheel housing and motor.
4. Inspection of all supply°air and return-air ducts _br leaks,
obstructions, and insulation integrity. Any problems found
should be resolved at this time.
5. Inspection of the unit base to ensure that no cracks, gaps, etc.,
exist which may cause a hazardous condition.
6. Inspection of the unit casing £_r signs of deterioration.
7. Inspection of all electrical wiring and components to assure
proper connection.
8. Inspection _br leaks in the refrigerant circuit. Pressure-check
to determine appropriate refiigerant charge.
9 Inspection of compressor oil level by service person to ensure
proper oil level is maintained in the compressor when it is
installed and running.
10. Operational check of the unit to detem_ine working condi-
tions. Repair or adjustment should be made at this time.
Your sela'icing dealer may offer an economical service contract
that covers seasonal inspections. Ask for fm'ther details.
Complete sercice instrnctions can be found in the unit Installation,
Start=Up and Service Instructions.
WARRANTY ( ERTIFI(ATE
Unit 50XP has a limited watxanty. Be sure to read the warranty
carefully to deteimine the coverage _br your unit.
BEFORE YOU (?ALL FOR SERVICE ...
...check _br several easily-solved problems.
If insufficient heating or cooling is suspected:
() Check for su£[icient 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 at all, check the following list for
easy solutions:
( ) (beck to be sure that your them_ostat temperature selector is set
below the indoor temperature during the cooling season or above
the indoor temperatnre during heating season. Be sure the SYS-
TEM switch or MODE control is in the COOL or HEAT position
and not in the OFF position.
( ) If your unit still t:i_ils to operate, call your servicing dealer _br
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 sela'ice call.
IN (ASE OF TROUBLE
If you perform the steps above and unit perfbm_ance is still
unsatisfhctory, shut off the unit and call your dealer.
Dealer's Name
Telephone
Unit Model
Unit Serial Number
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