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UV100E ULTRAVIOLET SYSTEMS
TROUBLESHOOTING AND SERVICE
The Ultraviolet System has no field-serviceable parts. Bulb
cleaning is recommended as routine maintenance quarterly or
every three months. Bulb replacement is required when the
LED on the front of the UV system is lighted solidly. See the
Owner's Guide for detailed procedural information.
If systems with an airflow sensor (UV100E1043 and
UV100E2009 Air Treatment Systems), incorrectly identify
airflow, the airflow sensor may be calibrated incorrectly. To
recalibrate the sensor, remove power to the furnace or turn off
the system and fan, wait ten minutes, and then resume normal
furnace operation. Even if the lamp fails to turn off, the sensor
was recalibrated during this operation.
If the internal temperature exceeds the ballast high-
temperature limit, the control continues to retry every three
hours until the temperature is low enough to run correctly. An
Enviracom fault message (when connected) sent after 72
hours. If reset is pushed during this fault, the control tries to
restart but cannot start until temperature returns to normal.
If the bulb(s) burns out, experiences low supply voltage
(brownout) or has an internal catastrophic failure, the control
continues to retry once every hour until the problem is
corrected. An Enviracom fault message (when connected) is
sent after 24 hours. If reset is pushed during this fault, the
control tries to restart but cannot start until fault is corrected.
To determine if a bulb is burned out or other problem exists,
press the reset button briefly (one second). The bulb(s) should
come on (as indicated by the illuminating lamp light indicator).
Hold reset button longer only when replacing the bulb.
MAINTENANCE
How You Can Maintain Your UV System
You should regularly clean your ultraviolet lamp to maintain
peak effectiveness of your air treatment or surface treatment
system. Replace the ultraviolet bulb when the LED status light
on the front of your UV System is on steadily.
CAUTION
Personal Injury Hazard.
Power supply can cause electrical shock.
Disconnect power supply before cleaning or replacing
ultraviolet bulb(s).
Do not open base unit or lamp handle; there are no
user-serviceable components inside.
CAUTION
Breakable Glass Hazard.
Can cause personal injury.
Be careful when inserting bulb(s) into lamp base.
Wear protective gloves when handling bulb(s).
68-0262—5
Quarterly Bulb Cleaning
MERCURY NOTICE
This device contains mercury (less than 5 mg) in the
sealed ultraviolet bulb(s). Do not place your used
bulb(s) in the trash. Dispose of properly.
Broken Bulb Cleanup.
Do not use a household vacuum.
Sweep debris into a plastic bag and dispose of
properly.
Contact your local waste management authority for
instructions regarding recycling and the proper disposal
of old bulb(s).
Bulb cleaning is recommended as routine maintenance
quarterly or every three months. Use the UV Bulb Cleaning
Reminder Schedule, Fig. 10, to help you establish and track
your regular cleaning schedule.
UV BULB CLEANING REMINDER SCHEDULE
INSTALLATION DATE: (month)
J
F
M
YEAR
Fig. 10. UV bulb cleaning reminder schedule.
CAUTION
UV Lamp Burn Hazard.
Harmful to bare skin.
Can cause severe burns.
Disconnect power 15 minutes before removing
ultraviolet bulb(s).
To clean your bulb:
1. Disconnect the power to your heating and cooling
system.
2. Unplug or turn off power to your UV system and allow the
bulb to cool for at least 15 minutes.
3. Rotate your lamp handle counterclockwise and gently
pull the lamp handle to remove the bulb(s). See Fig. 11.
8
A
M
J
J
A
S
O
, (year)
N
D
M13516A
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