Timer Operations; Sleep Function; Operating Control; Maintenance - York YVHC 09 Service Manual

High wall inverter
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3. Adjusting ambient temperature
Press the
or
buttons to change the
ambient temperature set point. This should
remain between 16 and 30°C.
- To select fan speed and air louver posi-
tion.
Speeds available are Low - Medium - High.
Press the FAN button to achieve the desired
air flow. The FAN symbol shows the speed
selected.
Use the SWING button to control the air
louvers. If pressed once, the louvers are sta-
tionary; if pressed a second time, the louvers
sweep to distribute air throughout the room.

4. Timer operations

The control unit is equipped with a timer that
sets the on and off times of the unit.
The configurations stored in the control unit
will be the predominating parameters upon
turning the unit on.
To use the timer, proceed as follows:
On/off timer
The on/off timing function is achieved by
pressing the TIMER button. To start the unit
at a determined time, press the TIMER but-
ton in half hour intervals until the on time is
achieved. The unit will start once the pro-
grammed time has elapsed, which will be
memorised by the unit.
In the same way, to turn the unit off at a de-
termined time, carry out the same operation
by pressing the TIMER button as many times
as necessary to achieve the required time.

5. Sleep function

The Sleep mode, which can be used in Cool
Component
Dust filter:
Unit casing:
Drain tray and pipe:
and Heat, is a program that controls the
ambient temperature at night.
Cool mode
In Sleep mode and cool operation, the unit
will operate in the following phase se-
quence: 1-2.
Phase 1: The unit will operate in cool mode
until the ambient temperature set
point is reached.
Phase 2: After reaching the ambient tem-
perature set point, the unit will
operate in cool mode so as to
keep the ambient temperature
within the limits of the set point,
+1 to +2°C for 1 hour.
Heat mode
In Sleep mode and heat operation, the unit
will operate in the following phase se-
quence: 1-2.
Phase 1: The unit will operate in heat mode
until the ambient temperature set
point is reached.
Phase 2: After reaching the ambient tem-
perature set point, the unit will
operate in heat mode so as to
keep the ambient temperature
within the limits of the set point,
-1 to -2°C for 1 hour.

Operating Control

Emergency operation
The emergency switch is located in the re-
ceiving panel on the front of the unit. This
switch is used when the batteries of the re-
mote control unit have run out, or in the case

Maintenance

1. Clean with a vacuum cleaner or tap lightly and wash with luke-
warm water (40°C) and mild detergent.
2. Rinse and dry before reinstalling on unit.
3. Do not use gasoline, alcohol or other chemical products.
1. Remove dust from front panel with a soft rag or a rag mois-
tened in a mild soapy solution.
2. Do not use gasoline, alcohol or other chemical products.
1. Clean and make sure there are no obstructions.
GB
of any trouble.
Operation of the system in Emergency
mode
Cool System
The ambient temperature set point is set to
20°C. The unit operates in the cool mode.
Heat and Cool System
The ambient temperature set point is set to
25°C. The unit operates in automatic mode.
Automatic reset and antifreeze protec-
tion
After any power failure, the unit resets au-
tomatically (when power supply is re-estab-
lished), remaining in the same mode as prior
to the failure.
Defrost and overheating protection
This feature is used to avoid freezing of the
evaporating unit in cool or dry mode, as well
as to avoid overheating in heat mode.
When in the defrost (antifreeze) and over-
heating protection cycle, the compressor is
inoperative, its LED flashes in cycles and
the air louver stops in fully open position. At
the end of this cycle, the louver operates in
accordance with the previously programmed
parameters.
Maintenance
These units are designed to operate during
long periods of time with minimum mainte-
nance. Nevertheless, the following opera-
tions should be carried out regularly.
Frequency recommended
Every month, or more frequently if necessary.
Every month, or more frequently if necessary.
Every season prior to start-up.

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