Installation Guide

21 English
Table 2: Troubleshooting Guide (Continued)
Symptom Possible Reason Troubleshooting Procedure
The ventilation
damper does
not open when
the HVAC fan is
active.
Cycle time has
been met.
• The damper will not open if the ventilation time has already been met.
ODT error or
outdoor air
outside of ODT
range.
• Check that the ODT is wired correctly
to the dehumidifier control board and
connections are secure.
• Check that the ODT is installed in the
outdoor air intake according to the
setup specified in
VENTILATION ON
PAGE 13
.
• Remove the ODT leads from the
dehumidifier control board and check
the resistance. Compare the reading
with the chart on the right.
Outdoor
Temperature Resistance
0°F
84,500
Ohms
20°F
46,000
Ohms
40°F
26,000
Ohms
60°F
15,500
Ohms
80°F 9,500 Ohms
100°F 6,000 Ohms
Dehumidifier
is not draining
properly.
Drain line
blocked or unit
not level.
• Verify that the unit is level.
• Check the drain line blockages and check for a continuous downward
slope.
• Verify presence and condition of drain cover insert.
See Maintenance
on page 4
for cleaning procedure, or replace with Part No. 5885 if
missing or damaged.
The HVAC
fan turns on
unexpectedly.
Dehumidifier
is sampling or
ventilation in
progress.
• The dehumidifier will turn on the HVAC fan during air sampling or as
needed to meet the ventilation time.
Dehumidifier is
producing hot
air.
Normal function. • Air is reheated across the condenser coil, resulting in a temperature
rise between inlet and outlet.