LUX ELV4 Mode d'emploi
Troubleshooting Poor Temperature Regulation
• This page lists problems that may affect the temperature performance of your LUX
thermostat with suggested resolutions.
• For more detailed information please refer to the instructions that came with your
thermostat.
Model
ELV4
Problem
Resolution
Indicates incorrect room temperature
Refer to thermostat manual to verify that your set temperature
is what you expect it to be.
Heats more than 5 degrees past its
displayed set temperature
Refer to thermostat manual to verify that your set temperature
is what you expect it to be.
Replace the batteries with fresh Duracell® or Energizer®
alkaline batteries.
Adjust set temperature to at least 5 degrees below room
temperature. Then adjust set temperature upward one degree
at a time. Listen carefully for a soft click from the thermostat.
This click should be heard near room temperature. Adjust set
temperature down one degree at a time. Again listen carefully
for a soft click from the thermostat near room temperature.
Refer to your unit's manual to decrease the units swing value
to a narrower setting.
Verify that your unit's placement and mounting are optimum
per the installation section of its manual.
No heat when expected
Refer to thermostat manual to verify that your set temperature
is what you expect it to be.
Refer to wiring to verify that it is according to the unit's wiring
diagram. Verify that all connections are to your thermostat are
clean and tight.
Replace the batteries with fresh Duracell® or Energizer®
alkaline batteries. Press reset with small Phillips screw driver.
It may be necessary to reconfigure some settings after a
reset.
Heat Test
Adjust set temperature to at least 5 degrees below room
temperature. Then adjust set temperature upward one degree
at a time. Listen carefully for a soft click from the thermostat.
This click should be heard near room temperature. Heat
should operate immediately.
Adjust set temperature down one degree at a time. Again
listen carefully for a soft click from the thermostat near room
temperature. Heat should switch off immediately.
Advanced Troubleshooting
This thermostat is designed to switch potentially hazardous
line-voltage. Qualified service personnel may use the
following information to trouble shoot the system.
The ELV4 uses a normally open single pole relay to control a
heating system. It should open when hotter than its set
temperature and close when cooler than its set temperature.
NOTE: Only the L1-IN/OUT pole is broken during normal
temperature control. The L2-IN/OUT pole is a pass-through
and is always live unless the thermostat's Heat/Off switch is in
the OFF position (which will break both L1 and L2 poles).
For further assistance:
Contact your HVAC service company or our Technical
Assistance Line if not resolved.
Wiring Information and Troubleshooting
This page provides general guidance for your LUX Line-Voltage mechanical thermostat.
For more detailed information please refer to the instructions that came with your
thermostat.
Please make specific note regarding LOW VOLTAGE and LINE VOLTAGE directions. Do
not install LINE VOLTAGE wires to a LOW VOLTAGE control.
Do NOT wire by color of the wire, wire by the LETTER designation to which the wire was
attached on the previous control.
Model
ELV4
Problem
Resolution
120, or 240 VAC connected to
previous control
DO NOT ATTACH LINE VOLTAGE (120/240V)
WIRES TO A LOW VOLTAGE (24V)
THERMOSTAT.
Although its installation is relatively simple, this
thermostat is designed to switch potentially
hazardous line-voltage. If you are unsure of any
aspect of this products application or installation,
please consult with our technical assistance
personnel or other qualified service personnel for
assistance.
Carefully follow the wiring instructions shown in the
ELV4 installation manual for the ELV4 heating
control.
Advanced Troubleshooting
NOTE: Only the L1-IN/OUT pole is broken during
normal temperature control. The L2-IN/OUT pole is
a pass-through and is always live unless the
thermostat's Heat/Off switch is in the OFF position
(which will break both L1 and L2 poles).
For further assistance:
Contact your HVAC service company or our
Technical Assistance Line if not resolved.
Troubleshooting the Display
Problems that may be identified from the display of your programmable thermostat are
listed here with suggested resolutions.
For more detailed information please refer to the instructions that came with your
thermostat.
Model
ELV4
Problem
Resolution
Display will not change
Peel protective plastic label from display.
Display blurred and unreadable
Peel protective plastic label from display.
Press the small round inset RESET button behind
the door of your unit using a small Philips screw
driver. Reconfigure and reprogram.
Time alternates with room temp
This is normal operation which can not be changed.
Blank or fading display
Replace units batteries with fresh AA size
Duracell® or Energizer® alkaline batteries. Be sure
that they are installed with their polarity (+ and -)
correct.
Clean battery contacts with a pencil eraser and pry
out the spring contact slightly to insure a clean, firm
connection.
Press RESET using a small Philips screw driver.
Then reconfigure and reprogram.
Displays "LO BATT",
"REPLACE", or battery symbol
Replace thermostat batteries with fresh AA size
Duracell® or Energizer® alkaline batteries. Be sure
that they are installed with their polarity (+ and -)
correct.
Clean battery contacts with a pencil eraser and pry
out the spring contact slightly to insure a clean, firm
connection.
Displays wrong room
temperature
See Temperature Regulation
Displays wrong day or time
Rotate the Speed Dial® to SET DAY/TIME. The day
will flash, use UP key to correct day. Press NEXT.
The time will flash. Use UP and DOWN keys to go
to correct time. Rotate dial back to RUN.
Shows "888" on display
Press RESET using a small Philips screw driver.
Reconfigure and reprogram.
Shows "OL"
"OL" means Out of Limits. The sensor is reading
outside the thermostats room temperature display
limit of 32°F to 95°F. When the temperature returns
to within these limits the temperature display should
reappear. If actual room temp is not outside these
limits, there may be a malfunction. Press RESET
using a small Philips screw driver. Reconfigure and
reprogram.
Displays "OVERRIDE"
"Override" appears on the display when the set
temp is raised or lowered from the program
temperature. Overrides are terminated at the next
scheduled program period when the unit will revert
to the program temperature and the "Override"
indicator will be extinguished.
Display will not light
Not Applicable. Display is not backlit.
For further assistance:
Contact your HVAC service company or our
Technical Assistance Line if not resolved.
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