LCD Display
LCD Display
Error Info
Error Info
E1
E2
Sensor Error
System Switch
Error
E4
Channel Change
without matching
with receiver
TESTS/BATTERY/
ERROR CODES
Battery Conditioning
Your lithium battery can be recharged from the USB port on a PC
or 5V power supply wall charger (EWT-BC) (Not Included). The
Lithium Battery should be charged at least 12 hours for the first 3
times to properly condition the battery.
Low Battery Warning
Your thermostat has a battery warning system. When the
batteries become weak, the first stage low battery warning is
indicated by the battery symbol flashing on the LCD display. At
your earliest convenience you need to charge the batteries
through a wall charger or USB port. During the charging process
the battery icon will flash. When charging is compete, the battery
icon will disappear.
The Model EWT-3900 Wireless Thermostat is Linked to the
Receiver at the factory. Simply power up the Receiver and
operate the Thermostat. Follow the instructions below
only
if
you find the Thermostat and Receiver are not communicating.
1. Make sure the thermostat is in the OFF position.
2. Press and Hold the key for 3 seconds until the screen
changes to the menu screen.
3. Press key to scroll through the menu until the LCD
displays “CRES”.
4. Use the key to select 1. Press the Matching Key on
the receiver and then press the round button.
The thermostat will force the receiver to link.
5. Test by selecting Fan ON in the Thermostat screen. Wait
for the radio signal icon to flash on the screen.
If you continue to have difficulty matching your thermostat to
the receiver please contact the engineering Department at
EWC Controls, Inc. 1-800-446-3110.
When using more than one EWT-3900 thermostat on the
same system be sure to set up
one zone at a time
to ensure
a unique address is used for each zone.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
Copyright © 2009 EWC Controls All Rights Reserved
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PROG
PROG
Keyboard Lock
The thermostat can be locked to prevent unauthorized changes
from being made.
To lock or unlock the keyboard, press and hold the
button
for 3 seconds. The keyboard is locked when LOCK appears on
the display. Anytime a key is pressed, LOCK will appear on the
screen for one second.
To exit Lock mode press and hold the key for 3 seconds.
Filter Monitor
Your thermostat also keeps a record of the number of days your
filter has been in use. To maximize your systems performance
and energy efficiency, change or clean your filter regularly.
When the total fan time reaches 400 hours, you need to clean or
change your systems filter, “FILTER” will continue to display until
the counter is reset to zero.
Press the center button to review filter usage. “FILTER”
displays with the total number usage in days.
To reset the Filter Monitor counter, press and
hold
the
center button for 3 seconds when the filter monitor day shows.
The display will blink and the counter will be reset to zero
HOLD
/RUN
HOLD
/RUN
ERROR CODES
If the thermostat is unable to control the system due to an
unexpected problem, the thermostat will enter Error Mode. In this
condition, the thermostat flashes “E1”, “E2” on the LCD Display,
ans shuts off your system. When the thermostats wireless channel
is changed without registration, the display will show “E4” to warn,
it must re-register again. “E4” will disappear after registration
succeeded. You can set your thermostat back to the original
channel to avoid re-registration.
thermostat #
FCC ID:XLXA3900
QC
Pass
1. After initial battery conditioning, charge the battery every 3 months for best operation.
2. If communication is lost follow the syncing instructions.
a. Make sure the Thermostat is in the OFF position.
b. Press and hold the PROG key for 3 seconds until the screen changes to the
Menu screen.
c. Press the PROG key to scroll through the menu until the LCD displays CRES.
d. Use the UP key to select 1. Press the Matching Key on the Receiver and then
press the center button between the UP and DOWN arrows on the Thermostat.
e. Wait for 30 seconds, the Thermostat will force the receiver to link.
f. Test by selecting Fan ON in the thermostat screen. Wait for the radio signal icon
to flash on the screen. The HVAC fan should energize. You may now operate your system
normally.
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