19
Caution!
The control board is sensitive to static charge. To avoid damage,
touch a metal surface on the lift to discharge yourself of static
charge. Never touch the chips on the control board.
Always disconnect the 115 VAC power and disconnect
the fuse when working on the lift.
First Power Up
To turn the controller board on after connecting the fuse, press
the unit controls Up or Down pendant switch. The seat must be
in the locked position and no obstructions can be in the way of
the footrest.
Once the controller board has been turned on, it will stay on as
long as the battery charger remains connected.
Remote Control (Transmitter) Frequencies
The standard wireless remote controls (transmitters) use infrared
signals. One button on the transmitter is UP and other button
is DOWN. There are two infrared sensors (receivers) located on
the chassis access cover.
A combination of 4 different transmitter frequencies allow for
more than one lift in a single home. The two transmitters must
be set to the same frequency
(for each lift)
. For example 1 to
1, 2 to 2, etc.
To change a frequency:
Ensure the infrared receivers (in chassis cover) are connected
to the control board. Use the seat control to move the lift away
from the end of the track. Take the back off of the transmitters
and set the red jumpers (in each transmitter) to the same code.
Change the corresponding code in the control board J1 (see
chart). Press and hold the yellow "learn" button on the control
board, then press and hold one of the up/down buttons on one
of the transmitters.
The controller board should beep and the
lift start to move after you release the transmitter button when
the frequency has been successfully changed.
Note that if the lift is on an upper or lower limit switch, the fre-
quency may not be able to be changed.
To access the controller board the footrest support and shroud
must be removed. The footrest plug can be temporarily jumpered
out while changing frequencies.
D.
CONTROL BOARD DIAGNOSTICS
C.
CONTROL BOARD OPERATION NOTES
Quick Flash Red/Yellow - Short Circuit
Short circuit is an unrecoverable fault and may only be reset by
disconnecting and reapplying the battery. Short circuit may be
caused by an excessive overload on the motor or failure of the
MOSFET power devices.
Quick Flash Red - I
2
T
The motor has been overloaded for too long and the lift has timed
out. If the motor reaches 160% of full load for 6.0 seconds the
unit will time-out. To recover from this mode, the lift must be
put into stop mode. The unit will sound 2 rapid beeps.
Steady Red - Current Limit
Motor is loaded more than 120% of its rating. The motor will
continue to run in current limit for a preset time, however, the
speed will be reduced. The unit will sound 2 rapid beeps.
Note: Higher currents will allow for less run time.
Slow Flash Red - Emergency Stop
Either the fi nal limit switch has been tripped, the swivel seat
switch is not in the operating position, or there is an obstruction
in the footrest path. If the fi nal limit switch has been reached the
stair lift must be manually moved using an 8mm socket.
Quick Flash Yellow - Charging
Battery is charging. Charging begins approximately 2 minutes
after lift reaches upper or lower limit.
Slow Flash Yellow - Under voltage
Battery voltage is below 11 VDC.
Steady Yellow - Caution Low Battery
Battery voltage is between 11 VDC and 21 VDC.
Slow Flash Green on GRN LED - Stop Mode
Battery voltage is above 21 VDC and the lift is stopped.
Steady Green on PWR LED - Run Mode
Battery voltage is above 21 VDC and the lift is running. A green
test lead by the fuse allows the battery voltage to be measured
without removal of the shroud
The control board contains LED's that indicate various functions
or faults. A slow fl ash is 1 second on and 1 second off, a quick
fl ash is .25 seconds on and .25 seconds off.
Summary of Contents for Citia BOS
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