Grain Systems PNEG-743 - Manual (Page 14)

15
Series 2000 Top Dry Heater Control
ERROR CONDITIONS
symbols will be flashing. If a limit switch error or
one of the error numbers 1 through 8 occurs, that
error is displayed on the slave where the error origi-
nates. The master displays "SLA ERROR".
Two or more heaters may be connected together
Multiple Heater Error Conditions
Limit Switches
7 8 9 10 11 12
Illegal flame
sense
Error 7 is
most likely
caused by stuck
open solenoid.
Error 7 will not
shut down fan
until loss of
flame is detected
by control.
Flame probe
short error Slave #1 incon-
sistent with mas-
ter with either
the drying grain
flag or the LP
main solenoid or
cycle solenoid-
most likely the
slave got reset
powering up with
the solenoids off Slave #2
inconsistent
same as error 9
for slave #1 Slave #3
inconsistent
same as error 9
for slave #1 Wrong voltage.
Dip switch #5 is
the voltage se-
lector switch. If
dip switch #5 in
"ON" that se-
lects 240 VAC.
If the unit has
only 120 VAC
applied, error 12
will show up. If
dip switch #5
is"OFF" that se-
lects 120 VAC. If
the unit has 240
VAC applied er-
ror 12 will show
up.
This is im-
portant because
if the fan heater
is set up at GSI
for 120 VAC and
the customer
connects to 240
VAC the heater
control will work,
but if allowed to
operate the so-
lenoids will have
240 VAC applied
to them which
will damage so-
lenoids.
1 2 3 4 5 6
Plenum tem-
perature probe 1
open Plenum tem-
perature probe 1
short Grain tempera-
ture probe 2
open Grain tempera-
ture probe 2
short Airflow open Airflow short
MISC ERROR NUMBERS
The following limit switch errors light up indi-
vidually on the heaters LCD screen:
PLENUM, HOUSING, VAPOR, TEMP HI
LIMIT
(Errors 9 through 11 are displayed only if multiple heat-
ers are tied together through serial link).
Note: Temperature sensor connection-the temperature
sensor (bolt) must always be connected to the master.
In the case of the Top Dry, both temperature sensors
must be connected to the master (unit at the top). Top
Dry grain temperature input is connected to J7 pins 14
and 18.
through the serial link. If the master cannot com-
municate with a slave controller, the master will dis-
play "SLA" on the main display and the "RX" "TX"