Operation; Manual Operation - Carrier 42QHM009ES Owner's Manual

OPERATION

2.1 Operating temperature
Upper limit
Cooling
operation
Lower limit
Upper limit
Heating
operation
Lower limit
Note: DB - Dry Bulb
1. Optimum performance will be achieved within these operating temperatures.
2. When the unit operates above or below these conditions for a long time, system diagnostics may detect a malfunction
and the unit will not operate properly.
3. Room relative humidity - less than 80%. If the air conditioner operates outside this range, the surface of the air conditioner
may attract condensation. Please set the air flow louver to its maximum angle and set HIGH fan mode.

2.2 Manual Operation

Manual operation is available to control the unit when your remote is unavailable.
ACCESS
Open the front panel by carefully
lifting both ends at the same time.
Once lifted sufficiently, a click is heard
and it becomes self-supporting.
For some model, use the props to
support the panel
OPERATE
Press the manual button repeatedly to change modes as follows;
a Once = AUTO mode [heat, cool or fan 24°C and auto fan speed].
b Twice=COOLING mode [ switches to AUTO mode after 30 minutes (mainly used for
testing purpose)].
c Three times = OFF.
COMPLETE
Close the panel by firmly tugging downwards on both ends until it returns to its original
position.
RESTORE
Using the remote controller will return the unit to normal operation.
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Indoor Outdoor
32°C DB 46°C DB
-20°C DB
18°C DB
24°C DB
27°C DB
-20°C DB
0°C DB
Manual Button
AUTO/COOL
2.3 How It Works!
Basic Operation Modes：AUTO / COOL / DRY / HEAT* / FAN
[*]Model dependent
AUTO Mode
● In this setting the system will automatically change modes and fan speed to the set
temperature.
● [In spring and autumn, closer temperature control may require COOL/HEAT mode
changes.]
DRY Mode
In this mode, priority is given to dehumidifying the air. Low fan speed and compressor
cycling is used to achieve this and regulate room temperature.
SLEEP Mode
When selected, the set temperature will increase
(cooling) or decrease (heating) by 1°C
per hour for the first 2 hours. Thereafter it
keeps this new temperature for 5 hours
before switching off.
This operation saves energy and improves night time comfort by synchronising with the
body's metabolism.
Hints For Economical Operation
● Adjust the temperature to achieve moderate comfort levels.
● Excessively low or high temperatures waste energy.
● Improve performance by keeping windows and doors closed.
● Limit energy usage [run time] by using the TIMER function.
Use the timer
effectively
Please close
● Do not block air inlets or outlets. Poor performance, increased running costs and
reduced product life will result.
● Inspect the air filters periodically, and clean them when needed.
cold hot
Please clean
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