Condair Nortec GS 50, Operation And Maintenance Manual

Page: 72 / 92

72 Fault Isolation
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Code
Message Probable Cause Corrective Action(s)
Warning Fault
W22 E22 Fill Warning (W22)
Fill Timeout (E22)
The fill valve(s) have been active for an extended length of time and the
water level is still zero. The dual fill valves remain activated.
The Fill Warning will eventually become a Fill Timeout if the issue has not
been addressed.
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" on page 62 .
Drain pump running, or manual drain
valve open.
– 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
page 61 .
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
described in "Cleaning the Tank" on
page 57 .
W28 E28 Maintenance Due
Warning
Maintenance Due
Fault (on fault)
The preset service interval time has elapsed. The unit will continue to run
for 200 hours before a fault message is generated.
The unit will not operate if the warning message escalates to a fault mes -
sage.
IMPORTANT! Perform the required scheduled maintenance, then reset
the service reminder before restarting the unit.
Unit needs to be serviced. – Refer to "Maintenance" on page 51
for maintenance procedures.
– Reset the service reminder
after performing the required
scheduled maintenance – refer
to "Resetting Service Reminder" on
page 68 .