Carrier 40QA, Installation, Start-Up And Service Instructions Manual

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Table 8 — Cleaning and Maintenance Schedule
TASK MONTHLY QUARTERLY YEARLY
INDOOR UNIT
Clean Air Filters X
Clean Drain Pipe X
Clean Condensate Drain Pan X
Clean Indoor Coil 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
Clean Outdoor Coil X
Check that Outdoor Fan Assembly is Tight X
Clean Drain Pan X
NOTE: Maintenance procedures for the outdoor units are in the 38HDC, HDS, and QRC installation instructions.
TO CLEAN OR REPLACE FILTERS — Filters can be vacu-
umed or washed in warm water. Shake filter to remove any
excess water, and replace by sliding filter behind grille until
filter snaps in place.
If the filter has begun to break down or is torn, replace it.
Replacement filters are available through your Carrier
distributor.
To Clean Indoor Unit Bottom Panel —
If the bot-
tom panel of the unit becomes dirty or smudged, wipe the
outside of the panel with a soft dry cloth. Use a mild liquid
detergent and wipe off carefully with a dry cloth.
To Clean Indoor Coil —
To clean the coil, remove in-
door unit bottom panel and vacuum the coil fins, using care
not to bend or damage fins.
To Clean Outdoor Coil (Outdoor Unit)
Some metal parts and sharp fins of outdoor unit coil can
cause personal injury during cleaning. Clean coil care-
fully.
To clean the outdoor coil:
1. Remove any dirt or obstruction from discharge opening.
2. Use a garden hose to spray water on the coil. Debris that
collects between coil fins inhibits heat transfer — direct
the water spray between coil fins to flush out debris.
To Clean Condensate Drains —
Clean all drains and
drain pans at the start of each cooling season. Check the flow
by pouring water into the drain.
TO CLEAN OR REPLACE DRAIN PAN
1. Place a plastic sheet on the floor to catch any water that
may spill from drain pan.
2. Remove the intake grille and distribution assembly (at-
tached). See Fig. 23.
3. Remove the condensate water in the drain pan by letting
water drain into a 3-gallon bucket.
Do not use a screwdriver to pry drain pan out of
assembly — it could damage the pan.
4. Remove the 4 screws holding the drain pan.
5. Carefully hold the drain pan to remove it from the
assembly.
SERVICE
When servicing unit, turn off all electric power to unit
to avoid shock hazard or injury from rotating parts.
Do not vent refrigerant to atmosphere when servicing
unit. Recover refrigerant during system repair or unit
removal.
Before Calling for Service —
You may save the cost
of a service call by doing the following:
1. Be sure main power to system is turned on.
2. Press Mode button until OFF is displayed. Wait 5
minutes.
3. Press Mode button until either COOL or HEAT is dis-
played (as desired).
4. Adjust remote thermostat set point to desired room tem-
perature. If system starts within a few minutes, you may
not need service. If system does not operate properly, check
Table 9 for typical solutions.
IF SYSTEM FAILS TO OPERATE — Be sure:
• unit ON/OFF switch is in ON position
• fuse or circuit breaker is not tripped
FRESH AIR INSTALLATION OPTION
The 40QA units have an installation option which allows
for field installation of fresh air ventilation. Plan your in-
stallation carefully. Before you begin, measure carefully and
follow acceptable building practices, NEC, and local codes.
Ventilation-Air Accessory —
Refer to ventilation air
accessory installation instructions (also see Fig. 24).
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