Aprilaire E100 - Troubleshooting; Diagnostic Codes

INSTALLER TEST MODE
If everything is properly wired, the dehumidier and all of the
wired components will turn on and off during Installer Test
Mode to demonstrate that all are properly operating. Installer
Test Mode lasts for four (4) minutes. If the ON/OFF button is
pressed during test mode, the dehumidier will exit Installer
Test Mode and return to the OFF screen.
DEHUMIDIFICATION ONLY
If the dehumidier is not already OFF, press the ON/OFF button
to turn it off.
90-1854
Press and hold the ON/OFF and MODE buttons for 3 seconds.
The measured humidity, AIR SAMPLING and TEST will show on
the display. If wired to the HVAC system, the HVAC blower will
turn on and if there is/are damper(s) wired to the DEH DAMPER
terminals of the control, the damper(s) will energize.
90-1854
After three (3) minutes the dehumidier compressor will turn on
and DEHUMIDIFYING will replace AIR SAMPLING on the control
screen.
90-1854
After one minute of compressor operation, all outputs will turn
off and DONE will blink for 3 seconds and then return to the OFF
screen.
90-1854
90-1854
ZONING AND/OR VENTILATION
If the dehumidier has been set up for ventilation, VENTILATING
will appear on the display throughout Installer Test Mode, and
the ventilation damper will be energized.
90-1854
If the dehumidier has been set up for zoning, PRIMARY ZONE
will show on the display for the rst minute of dehumidier
blower operation. After one minute, SECONDARY ZONE will show
on the display and the zone dampers will de-energize.
90-1854
18