WLCG/WLHG
High-Wall Air Handlers
• Installation, Operation and Maintenance Manual •
P/N 240008111, Rev. G [06/18/10]
33
Controller Fault Conditions
Unit-mounted controller fault indications
Table 4
Code
Fault condition
Description
E01
Room air sensor fault
If the room air sensor is disconnected, dam-
aged or malfunctions the LCD display will
flash error code E01 to signify that a fault has
occurred.
Operation will continue with the control using
the last known value for the room air sensor.
E02
Condensate fault
If the control senses a condensate fault condi-
tion, either through the optional condensate
pumps safety switch or the drain pan sensors,
the LCD display will flash error code E02.
The compressor will switch off for a minimum
of three minutes and until the fault condition
is corrected.
E03
ID coil sensor fault
The indoor coil sensor monitors the tempera-
ture of the indoor coil.
If a freeze condition exists continuously for
three minutes, the LCD will display error code
E03 to signify that a fault has occurred.
The compressor will switch off for a minimum
of three minutes and until the fault condition
is corrected.
If the microprocessor detects a coil freeze con-
dition four times within a 24 hour period, the
FILTER CHECK indicator will appear.
