Optimum Comfort And Minimum Power Consumption; Correct Cleaning; Before A Long Shutdown Period; Troubleshooting - Carrier 40SMC N Series Owner's Manual

40SMC---N
Before a long shutdown period... and Troubleshooting
Optimum comfort and minimum power
consumption
Keep room temperature at a comfortable level.
Only open doors and windows when strictly necessary.
Make sure the indoor unit intake and supply outlets are free of
obstructions.
Obstructions will cause a reduction in the air flow and the
conditioning effect, resulting in unit malfunction.
When cooling, avoid direct sunlight in the room: if possible, draw
the curtains or close the shades.
Ensure that the air filters are clean.
Periodically clean the area surrounding the outdoor unit and the
air intake, in order to avoid reduced air circulation.
GB - 4
Optimum comfort... - Correct cleaning -

Before a long shutdown period

Ask to clean the filter and replace it in the unit.
Clean the unit and the surrounding area.
Keep the unit in operation for half a day in the ventilation
(fan only) mode in order to dry all internal parts.
Switch the unit OFF and wait for at least 3 minutes before
switching OFF the main electric supply.
Remove the batteries from the remote control (if foreseen).
Clean the outdoor unit.

Troubleshooting

Air conditioner will not start:
• The main switch is switched OFF, place the switch in the ON
position.
• The fuses on the main switch are burnt out; replace the fuses.
• Wait for 3 minutes: protection against frequent compressor cycling
is ON.
• Selected temperature is higher than the room temperature (or
lower in the heating mode).
• If the unit is equipped with a condensate drain pump (refer to the
connection diagrams in the installation manual), the qualified
personnel must check that the pump is not under alarm and the
water level inside the condensate drain pan is within the normal
values.
Air conditioner is not supplying enough cooling (or heating):
• Air cannot circulate freely.
• Dirty filter reduces air quantity circulating.
Filter must be cleaned by skilled personnel only.
• Doors and/or windows are open.
• Fan speed has been set to 'low'.
• Selected temperature is not correct.
A slight mist is emitted from the unit:
• A slight mist, coming out of the unit air outlet, is sometimes
noticed during cooling operation. This is due to the cool air coming
into contact with the room air.
A slight whistling noise is heard when the air conditioner
starts or stops:
• This is due to the refrigerant beginning to circulate or an
adjustment of the refrigerant pressures. This is a normal operating
condition.
The unit emits unpleasant smells:
• Unpleasant smells can accumulate on the air filters and then be
dispersed into the room during air conditioner operation.
Switch the unit OFF and contact an authorised service centre to
have the filters cleaned.
Restart unit in the ventilation (fan only) mode and open windows
to change room air.