Nortec GS Series - Manual (Page 80)

77 | GS Series Installation
Table 12: GSP Fault List
GSP fault code
displayed Description of fault Troubleshooting
NBF Once the GS controller detects an ignition
module fail, it will index to the next
available ignition module. If all ignition
modules have failed or there are none
available (in the case of a 100 unit) this
fault will be generated.
(1) Check red LED’s on all modules for flashing fault
code.
(2) Ensure there is gas supply to the humidifier.
(3) Ensure that the burners have not been disabled
in the software.
(4) Consult factory.
AOF-X On startup after 3 tries if the AP switch
does not close within the proving period,
this fault will be generated
(1) Check that blue hoses on the Air Proving switch
have not come loose.
(2) Check that wires on the Air Proving switch are on
the N/O contacts
(3) If available, swap Air Proving switch with another
and see if the fault follows the air proving switch,
if so, replace switch
(4) Consult factory
ACF-X On initial startup if any of the A/P switches
are closed this fault will be generated.
(1) Ensure that wiring on the air proving switch is on
the N/O contacts.
(2) Ensure that there is no continuity between the
switch with the wires off, if so replace switch.
(3) Ensure that there is not a strong positive pressure
in the room holding the switch closed.
(4) Consult factory.
BHF-X If the blower RPM is above the RPM
tolerance for more than 10 seconds, this
fault is generated and the humidifier stops.
(1) Check wiring to lead blower and ensure a good
connection.
(2) Check lead blower for any restrictions by testing
it in the diagnostics screen.
(3) Consult factory.
BLF-X If the blower RPM is below the RPM
tolerance for more than 10 seconds, this
fault is generated and the humidifier stops
(1) Check wiring to blower X and ensure a good
connection.
(2) Check blower X for any restrictions by testing it in
the diagnostics screen.
(3) Consult factory.
BNF-X On startup, if the blower RPM does not
exceed 500 RPM within 5 seconds or if
during operation, the RPM drops below
500 RPM for more than 5 seconds this
fault is generated
(1) Ensure there is power to the blower and that all
wires are making a proper connection.
(2) Consult factory.
GVF-X If the controller detects that a gas valve
has activated at a time it should not this
fault is
Generated. (1) Ensure that the ignition module is not miswired
or that the module is not faulty by swapping it
with a known good one. If the problem follows
the ignition module, replace the module.
(2) Consult factory.
GIF-X Following an ignition module fault if the
modules gas valve activates this fault will
be generated.
(1) Ensure that the ignition module is not miswired
or that the module is not faulty by swapping it
with a known good one. If the problem follows
the ignition module, replace the module.
(2) Consult factory.
DBF There are many time windows in the GS
software. If, during a drain cycle, the time
window for the water level to drop is
exceeded, this fault is generated.
(1) Ensure that pump is being energized.
(2) Check for blockage in all aspects of the drain
system.
(3) Float board defective.
(4) Consult factory.