Carrier 40SMC N Series User manual

40SMC---N
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OWNER’SMANUAL

ENGLISH
GB - 1
40SMC---N
Ductedabove-ceilingunits(Coolingonlyandheatpump)
IR Remote Control “Room Controller” “Zone Manager”
The unit can be used with infrared Remote Control, with the Carrier “Room
Controller” or “Zone Manager” remote control.
For the instructions for use of the wired remote controls and the IR Remote Control refer
to the corresponding manuals.
For the installation instructions of the indoor and outdoor units refer to the
corresponding manuals.
Contents
Page
General information .................................................................................... 2
Unit protection devices ............................................................................... 2
System description ..................................................................................... 3
Periodical checks........................................................................................ 3
Optimum comfort and minimum power consumption ................................. 4
Correct cleaning.......................................................................................... 4
Before a long shutdown period................................................................... 4
Troubleshooting .......................................................................................... 4

40SMC---N
GB - 2
General information
Unit operation and maintenance
Read this instruction manual thoroughly before using the
unit.
•This unit complies with the low-voltage (EEC/73/23) and
electro-magnetic compatibility (EEC/89/336) directives.
•Make sure the electric system voltage and frequency comply
with the required values and the power input available is
suitable for running the unit.
•All operation and maintenance manuals must be carefully
looked after and kept with the equipment, should the unit
change owners.
•Check that all current national safety code requirements for
the installation have been followed.
In particular, ensure that a properly sized and connected
ground wire is in place.
•Only use the unit for factory approved applications: the unit
cannot be used in laundry premises.
•Do not use damaged equipment.
In case of malfunction, turn the unit OFF and disconnect the
mains supply.
•Disconnect the mains power supply prior to any maintenance
operations or prior to handling any internal unit parts.
•The manufacturer declines any liability for damage resulting
from modifications or errors in the electrical or refrigerant
connections, made during the installation, or from improper
use of this equipment.
This will invalidate the unit warranty conditions immediately.
•Installation and testing by skilled personnel are guarantee of
the unit proper and safe operation.
•This unit contains moving parts.
Ensure that these parts are kept out of the reach of children.
•Maintain the room temperature at general comfort conditions,
especially when children, elderly or handicapped persons are
present.
•In order to ensure correct use, the air conditioner must operate
within the temperature limits indicated in the “Operating Limits”
table, included in the outdoor unit installation manual.
Failure to observe these limits may cause unit malfunction or
water leakage.
•Make sure the units are not damaged after transport; if so,
lodge a complaint against the forwarding agent.
•The unit maintenance and cleaning must be carried out by
skilled personnel only.
•All of the manufacturing and packaging materials used for
this appliance are recyclable.
•The packing material and the remote control exhausted
batteries (accessory) are to be disposed of according to the
standards in force.
•This equipment contains refrigerant that must be disposed of
correctly.
At the end of the unit’s life, take it to special collection points
or deliver it to the retailer for correct disposal.
WARNING:
The unit must always be switched OFF using the remote
control. Do not switch OFF the split system by
disconnecting the electric power supply.
WARNING:
During heat pump operation the unit will undergo several defrost cycles to remove ice that might collect on the outdoor unit in very low ambient
temperatures. In these cycles, the indoor fan will be automatically off and cannot operate until defrost cycle is completed.
Table I: Unit protection devices
System Type of protection Effects Protection
When on
operation modes
Protection against Indoor fan off Heating in During start-up or when
cold air flows heat pump mode the system is running.
Heat pump
Outdoor coil Indoor and outdoor Heating in During unit operation
defrost cycle fans OFF heat pump mode
Indoor coil Compressor off Cooling During unit operation
Cooling only freeze protection
and
heat pump Against frequent Compressor does not start Cooling or heating At unit start-up or
compressor cycling when unit is switched on in heat pump mode
change of operating mode

40SMC---N
GB - 3
ENGLISH
A. Outdoor unit
B. Indoor unit
1. Air return
2. Air filters
3. Air supply
4. Nameplate
5. Interconnecting tubing
6. Condensate drain (open)
System description
System description
6
5
A
21
4
3
B
For a good operation of the air conditioner it is recommended to carry out checks and maintenance as indicated.
Recommended maintenance intervals may vary depending on the installation environment, e.g. dusty zones, etc.
(1) Increase frequency in dusty zones.
(2) Operations to be carried out by qualified service personnel. Refer also to “Installation Manual”.
Table II: Periodical checks
Indoor unit Every month Every 4 months Every year
Clean air filter (2) •(1)
Clean drain pipe (2) •
Replace the IR Remote Control
batteries (if any) •

40SMC---N
GB - 4
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.
Optimum comfort...- Correct cleaning -
Before a long shutdown period... andTroubleshooting
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.
Periodically clean the area surrounding the outdoor unit and the
air intake, in order to avoid reduced air circulation.

L010126H26- 1203
Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. [phone]
The manufacturer reserves the right to change any product specifications without notice.
December, 2003. Printed in Italy