TROUBLESHOOTING
Prior to calling Surna technical support, follow
these troubleshooting steps. Steps 1-6 may be
handled by anyone with basic knowledge of the
dehumidifier set up; steps 7-12 should be handled
by a licensed HVAC technician. To avoid voiding the
warranty, please call Surna at 303.993.5271 before
having a technician perform work.
WARNING: Before preforming routine maintenance
or service, verify unit is disconnected from power
source. The Surna dehumidifier contains high
pressure refrigerant, high voltage circuitry, and
an internal fan. Improper operation could result
in serious bodily injury, death and/or property
damage.
CUSTOMER
1. Verify that unit is plugged in and GFCI is not
tripped.
2. Verify power to outlet is on.
3. Ensure circuit breaker has not tripped.
4. Verify toggle switch located on the
dehumidifier is in the “on” position. (Fan will
constantly run even if the toggle switch is in
the “off” position.)
5. Verify that filter and evaporator coil are clean.
(The filter should be cleaned every 30 days.)
6. Verify the Humidistat is set to “on.”
NOTE: The Surna dehumidifier is intended to
operate in temperatures above 70°F (21°C ) and
relative humidity of 45% or higher. Temperature
and relative humidity affect performance. Contact
Surna with questions. If steps 1-6 are unsuccessful,
contact Surna Technical Support at 303.993.5271
before calling a technician.
TECHNICIAN
7. Check airflow conditions of unit. Air should
be felt being pulled through the evaporator
coil and pushed out of the condenser coil.
8. Check that filter and evaporator coil on the
unit are clean. If not, clean these items with
water and an approved coil cleaner.
9. Check condensate plumbing. P-traps are
required.
If steps 7-9 are unsuccessful, remove dehumidifier
from ceiling and remove top cover.
10. Check internal temperature controller
(Ranco) within the unit; contact Surna
for detailed Ranco troubleshooting
instructions. Verify the Ranco set point
is 32°F (0°C).
11. Check temperature probe. Verify the probe is
fully inserted into the evaporator coil for
accurate temperature readings. If installed
correctly, the temperature probe should not
be visible.
If steps 10-11 are unsuccessful, contact Surna
for further instructions on testing environmental
conditions and/or unit refrigerant charge.
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