Manual 2100-578L
Page
35 of 42
Troubleshooting Condensate Overflow
Systems
The Bard I-TEC Series is equipped with dual
condensate overflow switches. One switch (float type)
is located in the indoor drain pan. It is secured to the
drain pan with a screw-down clamp (see Figure 18).
The second switch (electronic/conductance) is located
in the control panel with the sensor mounted adjacent
to the left outdoor coil in the outdoor drain pan (see
Figure 19).
The float type switch in the indoor drain pan is
equipped with an LED light that indicates when an
overflow condition is present.
Electrically, the two condensate switches are wired in
series with the unit's high pressure switch. All three
switches have normally closed contacts, but if any
of them are activated, it will then activate initially a
soft lockout of the compressor circuit. If recurrence
FIGURE 20
Outdoor Condensate Control
FIGURE 18
Indoor Condensate Overflow Switch
FIGURE 19
Outdoor Condensate Sensor
happens on the same cooling call cycle, a hard lockout
of the compressor circuit will occur.
The electronic switch for the outdoor drain pan has
three LED lights giving a status update (see Figure 20).
To test the electronic overflow switch function, bridge
accross the probes with a wet finger. The unit should
stop, and the RED LED should come on. Remove the
finger from the probe. After approximately 5 seconds,
the RED LED should go off and the GREEN and
AMBER LEDs should come on.
To Reset (Clear AMBER LED):
Bridge across the sensor probes with wet finger until
the RED LED comes on, then remove the bridge
quickly. While the RED LED is still on, bridge the
probes again quickly (within 2 seconds). Hold until
the AMBER LED goes off, then immediately remove the
bridge.
RED LED Illuminated:
Overflow currently being detected,
switch activated
GREEN LED Illuminated:
No overflow currently being
detected
AMBER LED Illuminated:
Previous condition detected
