Flo i-Controller REV.200, Troubleshooting Manual, Page: 6 / 17

Troubleshooting Guide
CN-IC1-09
Title
:
i-Controller REV.200 Alarms (Troubleshooting)
EXTERNAL
6 1-19MAY2021
Drain Pan Overflow Alarm
The drain pan overflow alarm is generated when the drain pan float switch detects an elevated level of water in the
condensate drain pan. When an overflow alarm is generated,
“ ALARM ” will be displayed next to “ Overflow Status ” on the
Alarms screen.
The normally closed float switch, located in the condensate drain pan and will open if the water level if too high. After a 30
second delay, the Fl
ō unit will shut down to prevent the water from overflowing out of the drain pan.
When the water level in the drain pan decreases and the float switch input closes, the drain pan overflow alarm will
automatically reset.
Drain Pan Float
Switch Alarm
present
Drain pan
overflowing?
•
Verify that the drain leaving the
unit is not clogged, and clean if
necessary
•
Check the cleanliness of the
drain pan, and clean if necessary
•
Verify that the p-trap is not
clogged, and clean if necessary
•
Ensure the proper p-trap was
installed
•
Check for excessive negative
pressure inside unit (e.g. how
easy or hard is it to open the
cabinet door?)
Yes No
•
Check float switch
operation
•
Check wiring and
connections
•
Verify the alarm input
points on the board or
controller
•
Verify that the controller
setup is correct (NC)
Has the alarm
cleared?
Contact Tech
Support
1-888-598-1198
No
Issue resolved
Check the drain pan
Yes