11-8
CONTROL SYSTEM
SM YAZDCI 1-A.1 GB
11.4.6
Indoor Units Operation when Indoor Unit Mode is Different than
Outdoor Unit Mode
Open louvers according to user selection.
Indoor fan is forced to OFF.
11.4.7
Heating Element Control
Heating element can be lit on if LOAD > 0.8 * MaximumNLOAD AND Indoor Coil temperature
< 45
C.
The heating element will be off when LOAD < 0.5 * MaximumNLOAD OR if Indoor Coil
temperature > 50
C.
11.4.8 Ioniser
Control
LEX Family - Ioniser is on when unit is on AND indoor fan is on AND Ioniser power switch (on
Ioniser) is on.
11.4.9
Electro Static Filter (ESF) Control
LEX Family - ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND
indoor fan is on.
11.4.10
Indoor Unit Dry Contact
Indoor unit Dry contact has two alternative functions that are selected by J9.
Status
Function
Contact = Open
Contact = Short
J9 = Open
Presence Detector Connection
No Limit
Forced to STBY
J9 = Short
Power Shedding Function
No Limit
Limit NLOAD
11.4.11
Operating the Unit from the Mode Button
Forced operation allows to start, stop and operate in Cooling or Heating, in pre-set
temperature according to the following table:
Forced operation Mode
Pre-set Temperature
Cooling
20
0
C
Heating
28
0
C
11.4.12
On Unit Controls and Indicators
11.4.12.1 All Models Except for Floor/Ceiling model
STAND BY
INDICATOR
Lights up when the Air Conditioner is connected to power and ready to receive the R/C
commands
OPERATION
INDICATOR
Lights up during operation.
Blinks for 300 msec to announce that a R/C infrared signal has been received and stored.
Blinks continuously during protections (according to the relevant spec section).
TIMER INDICATOR
Lights up during Timer and Sleep operation.
FILTER INDICATOR
Lights up when Air Filter needs to be cleaned.
COOLING INDICATOR
Lights up when system is switched to Cool Mode by using the Mode Switch on the unit.
HEATING INDICATOR
Lights up when system is switched Heat Mode by using the Mode Switch on the unit.
Mode SWITCH
(COOL/HEAT/OFF)
Every short pressing , the next operation mode is selected, in this order :
SB
→
Cool Mode
→
Heat Mode
→
SB
→
…
In long pressing system enters diagnostic mode.
RESET / FILTER
SWITCH
For short pressing:
When Filter LED is on - turn off the FILTER INDICATOR after a clean filter has been
reinstalled.
When Filter LED is off – enable/disable the buzzer announcer, if selected.
