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2525
For the Installer
Unplug the auxiliary controls
Uplug the unit
Open the door, remove the magnet from the
door and place it on the unit s magnet (this will
allow the unit to work while the door is open)
Wait 1 min ute
Plug unit back
Wait 30 seconds while unit performs a booting
sequence.
Can you hear the relays every 30 seconds?
The unit s LED is RED, the
dampers wor k
continuously, stops after
7-8 minutes and the unit s
LED flashes AMBER.
Use a voltmeter. While the
un it s LED is RED, is there
17 VAC between J8-1 and J8-2
on the transformer (bro wn
wires on the transformer)?
Is J12 is properly
connected to the
electronic board?
Replace the damper assembly and
put the door magnet back in place.
YES
YES
Replace the
transformer and put
the door magnet back
in place.
NO
Wall control displays error code E23 and the
unit s LED is flashing AMBER
NO
Replace the
damper assembly
and put the door
magnet back in
place.
Restore the connection and put
the door magnet back in place.
NO
Unplug unit, wait one minute, and plug
it back. If the error code is still
displaying on the wall control, proceed
as follows.
Wall control displays error code
E21, the unit s LED double blinks
GREEN and unit s til l works.
(Cold side thermistor error)
Is J12 properly connected to the
electronic board?
Cold side thermistor is
defective. Replace the
damper assembly -
thermistor is included in it.
Restore J12
connection.
NOYES
Unplug unit, wait 1 minute and plug it
back. If the error code is still displaying on
the wall control, proceed as follows.
Replace the warm
side thermistor.
Wall control displays error code
E22, unit s LED blinks GREEN, 2
blinks per second.
Unit does not work
(Warm side thermistor error )
Is J20 properly connected to the
electronic board?
Restore J20
connection.
YESNO
Replace the
electronic board.
Can you see the
dampers move?
YES
YES
NO
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