Service manual
12-15
CONTROL SYSTEM
SM CINCO 1-A.1 GB
12.4.9 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.
12.4.10 Heating Element Control
Heating element can be turn on if high LOAD is more then 80% and Indoor Coil temperature is less then 45C.
The heating element will be off when LOAD is less then 50% OR if Indoor Coil temperature is more then 50C.
12.4.11 Ioniser Control
LEX Family - Ioniser is on when unit is on AND indoor fan is on AND Ioniser power switch (on Ioniser) is on.
12.4.12 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.
12.4.13 Indoor Unit Dry Contact
Indoor unit Dry contact has two alternative functions that are selected by J9 (Dip-Switch).
Status Function Contact = Open Contact = Short
J9 = Open Presence Detector Connection No action – normal operation Forced to STBY
J9 = Short Power shedding function No limit Limit NLOAD
“Presence Detector” feature in the indoor unit is done for cases that external SB (Stand-By) is required via a
presence detector switch, window closed detector, etc.
12.4.14 On Unit Controls and Indicators
12.4.14.1 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
PERATION
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.
12.4.14.2 LCD Display