Carrier 38AN - Manual (Page 18)

CLEANING AND MAINTENANCE
A CAUTION
To avoid the possibility of electric shock, before per­
forming any cleaning and maintenance operations al­
ways turn off power to the system by pressing the
orange ON/OFF button on the remote controller. Turn
off the outdoor disconnect switch located near the out­
door unit. If the indoor unit is on a separate switch, be
sure it is also disconnected.
F or proper system operation, perform the cleaning and main­
tenance operations in Table 9.
Lubrication — The indoor-fan automatic air sweep mo­
tor, and the outdoor-fan motor are factory lubricated and re­
quire no oiling.
To Install
Batteries
or Replace Remote Controller
A CAUTION
Do not drop the remote controller — damage to the de­
vice may result. Avoid getting the controller wet.
NOTE: Before replacing the batteries, note that the remote
controller signal can be affected if electronic fluorescent
lights are installed nearby. The batteries may not need to be
replaced. Tf you suspect this is the problem, consult your
Carrier distributor.
Batteries should be replaced once a year. Use 2 batteries
(1.5
V,
dc-type, AAA alkaline batteries). Never use old or
recharged batteries together with new ones.
To replace batteries:
1. Slide the battery cover off from the back of the remote
controller. See Fig. 18.
2. Insert the 2 batteries in accordance with the markings
on the remote controller, so that the poles are correct
(+ and -).
3. Press the |RST| button using an instrument screwdriver
or similar small, pointed tool.
4. Replace the cover securely.
It is time to replace the remote controller batteries when
the remote controller function becomes irregular, or the sys­
tem no longer responds to commands given close to the unit.
When shutting down the system for an extended period of
time, it is advisable to remove the batteries.
Consult distributor if any other equipment is turned on or
shows signs of disrupted operation if you use the wireless
remote controller, or if the system is turned on or shows signs
of disrupted operation when the remote controller of any other
equipment is used.
To Set the Current Time
1, Press the TA button (located on the back of the remote
controller; see Fig. 19) with an instrument screwdriver or
similar small, pointed tool, and the current time indica­
tion symbol flashes.
Note that the controller comes preset from the factory set
for 6:00 a.m.
2. Set the current time with the hour and minute buttons on
the front of the remote controller (see Fig. 19) while the
current time indieation is flashing. Note that a.m. and p.m.
are also indicated as the times are scrolled through.
3. Press TA again. The flashing will stop and the current
time will be reset to the new setting.
To Remove and Clean or Replace Air Filters
A CAUTION
Operating your system with dirty air filters may damage
the indoor unit and can also cause reduced cooling per­
formance, intermittent system operation, frost build-up
on the indoor coil, and blown fuses. Inspect and clean
or replace the air filters
monthly.
TO REMOVE AIR FILTERS;
1. Open fan coil unit front panel (lift). See Fig. 20.
2. Pull the filters down to remove.
TO CLEAN OR REPLACE FILTERS — Filters should be
vacuumed and washed with warm water (see Fig. 20). Shake
filter to remove any excess water, dry thoroughly, and re­
place by sliding filter behind front grille until filter snaps in
place.
If the filter has begun to break down or is tom, it needs to
be replaced. Replacement filters are available through your
Carrier distributor.
NOTE: DO NOT put filters in the dishwasher.
Table 9 — Cleaning and Maintenance Schedule
TASK MONTHLY QUARTERLY YEARLY
INDOOR UNIT
Clean Air Filters X
Clean Drain Pipe X
Clean Condensate Drain Pan X
Replace Batteries in the Remote Controller X
Clean Indoor Unit Front Panel X
OUTDOOR UNIT
Clean the Fins From Outside X
Open the Unit and Clean Fins Inside X
Remove Dust From Electrical Parts X
Check Electrical Connections are Tight X
Clean Outdoor Fan X
Check that Outdoor Fan Assembly is Tight X
Clean Drain Pan X
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