Product data

OPERATING SEQUENCE — HIGH WALL FAN COIL SYSTEMS (cont)
Sleep Mode — The sleep mode timer will turn the unit off when
the timer reaches zero minutes. The durations that can be se-
lected are 1, 2, 3, or 7 hours. After the initial 30 minutes, the
user set point shifts approximately 1° F warmer. This sequence
repeats itself every 40 minutes up to a total of 150 minutes.
When in sleep mode the display on the remote controller is
dimmed.
Awake Mode — The awake timer will turn the unit on when the
timer reaches zero minutes. The unit starts in the same mode
and at the same selected temperature as when the system shut
off. If the room temperature is not within approximately5Fof
the set point 40 minutes before start-up, the unit runs before the
awake timer reaches zero to achieve the set point temperature
at start-up.
Automatic Operation Mode for Cooling Only Systems —
The unit samples the air in the room. Based on the room tem-
perature, the unit selects one of the following modes:
1. Cooling Mode — If the room temperature is more than
82.4 F with a preset temperature of 78.8 F.
2. Dry Mode — If the room temperature is more than 75.2 F
and less than 82.4 F with a preset temperature of 77 F.
3. Fan Only Mode — If the room temperature is less than
75.2 F.
The preset temperature can be changed by ±4° F using the
remote control.
Test Mode — The test mode can be selected by setting the
slide switch on the fan coil unit to TEST position. The slide
switch is located on the front of the unit. The fan coil unit will
start immediately (there is no compressor time delay when us-
ing test mode) in cooling mode with an infinitely low set point.
The indoor fan speed will be at the high setting, and the swing
louvers will be on (moving up and down).
NOTE: The unit cannot be controlled by the remote controller
until the slide switch is returned to the REMOTE position.
Emergency Mode — This mode is only to be used if the remote
controller is lost, damaged, or the batteries are discharged. To
initiate emergency mode, manually move the slide switch on the
fan coil unit to the EMER position. The unit is automatically op-
erated in cooling mode according to room temperature. Emer-
gency operation settings are as follows:
1. Operation mode: AUTO
2. Fan Speed: AUTO
3. Cooling set point: 77 F
4. Timer Mode: Continuous
NOTE: The unit cannot be controlled by the remote controller
until the slide switch is returned to the REMOTE position.
OPERATING MODE MEMORY — After the system is turned off
or after a power failure, the system remains in the last operating
mode selected. When the system is turned back on, or when
power is automatically restored, operation continues in the
same operating mode as when power shut down.
OPERATING FAULT DIAGNOSIS — The system includes an
automatic diagnosis feature which is activated under difficult or
unacceptable operating conditions. If such conditions occur, the
system stops automatically, the operating fault signal appears
(green ‘‘UNIT ON’’ light on the front of the fan coil unit flashes),
and an analysis of the system operating conditions is initiated.
The system is restarted automatically as soon as normal con-
ditions have been restored, or it will remain off. If the system
does not start again, the green ‘‘UNIT ON’’ light flashes an error
code.
Ceiling-suspended and cassette fan coil units have a relay
board which controls system operation in response to a room
thermostat. The user may manually select any one of 3 fan
speeds for unit operation. Systems include a wired 24 v thermo-
stat (see above). Systems may be equipped with an accessory
power ventilation kit and/or condensate pump.
FAN OPERATION — Fan speed can be selected by pressing
the fan button (high, medium, or low speed choices). The fan(s)
is capable of operation when unit mode is set on either cooling,
heating, or auto mode. When the fan(s) is operating in medium
or high speed and the unit is equipped with the power ventilation
kit, the ventilation fan will operate to provide fresh air. If the
mode is set to the AUTO position, then the fan will operate with
the outdoor unit compressor.
COOLING MODE OPERATION — When the room thermostat
senses a demand for cooling, the fan coil relay board is ener-
gized. The indoor fan(s) will start at the selected speed (if it is
not already operating).
The internal condensate pump (if so equipped) runs when the
unit is in cooling mode. As long as the condensate float switch
and freeze protection thermostat are closed, the cooling relays
in the fan coil unit will close. This energizes the compressor and
outdoor fan in the outdoor unit.
The compressor will continue to operate until the room thermo-
stat is satisfied. When the cooling demand is satisfied, the com-
pressor and outdoor fan will stop. If the system is in the AUTO
position, the indoor fan will stop with the compressor. If the unit
has the accessory ventilation kit, the ventilation fan will operate
whenever the indoor fan is set for medium or high speed.
Remote Thermostat
Air Sweep
Mode
Fan
Day/Night
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