Electra LEX 25 DCI Service Manual page 53

CONTROL SYSTEM
11.1.13 Electro Static Filter )ESF( Control
ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND indoor fan is on.
11.1.14 Base Heater Control
When OAT is connected, Base Heater will be on when unit is in heating and OAT<2
When OAT is disconnected, Base Heater will be on when unit is in heating.
11.2 Fan Mode
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be ad
between actual room temperature and user set point temperature.
11.3 Cool Mode
NLOAD is calculated according to the difference between actual room temperature and user set
point temperature by PI control.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be ad8usted automatically according to the calculated
NLOAD.
11.4 Heat Mode
NLOAD is calculated according to the difference between actual room temperature and user set
point temperature by PI control.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adng to the calculated
NLOAD.
11.4.1 Temperature Compensation
In wall mounted, ducted, and cassette models, 3 degrees are reduced from room temperature
reading (except when in I-Feel mode), to compensate for temperature difference between high and
low areas in the heated room, and for coil heat radiation on room thermistor.
The temperature compensation can be enabled/disabled by shortening of J2 on the indoor unit
controller.
Model J2 Shorted
Wall mounted Compensation
Disabled
Cassette Compensation Enabled
Ducted Compensation Enabled
Floor/Ceiling Compensation
Disabled
11-4
justi ng automatically according
J2 Opened
Compensation Enabled
Compensation Disabled
Compensation Disabled
Compensation Enabled
CONTENTS
0
C.
to the difference
SM LEXDCI 1-E.1 GB