78
Fault Isolation
2583701_C_EN_1812_Nortec-GS_OM
Nortec GS
Code
Message
Probable Cause
Corrective Action(s)
Warning
Fault
–
E145
Fill Check Fault
The dual fill valves have been active for an extended period of time without
the water level rising in the float chamber. The unit will not operate without
an accurate water level reading. Fix the problem before restarting the unit.
Water supply problems.
– Make sure that the water sup
-
ply line is open, and there is
adequate flow and pressure.
Loose wiring, or clogged strainer in
dual fill valves.
– Check the wiring to the float
board and the dual fill valves.
– Check the strainer in the dual fill
valves is not clogged – refer to
"Cleaning Hoses, Dual Fill Valves and
Drain pump running, or manual drain
valve open.
– Visually check that the manual
drain valve is closed, and the
drain pump is not running.
Floats may be stuck.
– Visually check that the different
LEDs on the float board light up
as the water level in the float
chamber changes. If necessary,
clean the float chamber – refer
to
"Cleaning the Float Chamber" on
Fill valve relay on the driver board
not seated properly, or defective.
CAUTION!
Electro-static discharge
damage to board.
– Check that LED3 (corresponding
to REL4 for the high volume fill
valve) and LED4 (correspond
-
ing to REL5 for the low volume
fill valve) on the driver board
light up when the fill valves are
supposed to be energized. If
not, check the relay(s) is seated
properly on the driver board.
– Swap the relay(s) with another
relay on the board to verify that it
is working. If necessary, replace
the relay.
Defective dual fill valves.
– Check for 24 VAC on the pins
of the dual fill valves. If neces
-
sary, replace the dual fill valves.
Reconnect the wires correctly.
Scale build-up in the drain fitting.
– Clean the drain fitting, as
