Grain Systems PNEG-824 - Manual (Page 28)

28
Series 2000 Downwind Heater
ERROR CONDITIONS
Limit Switches
The following limit switch errors light up individually on the heaters
LCD screen: PLENUM, HOUSING, VAPOR, TEMP HI LIMIT.
Note: When a shutdown does occur due to an error condition, the amount
of time elapsed since the shutdown can be viewed by pressing the down
arrow switch (up to 218 Hours).
The heater
control display
showing error
#7.
Wrong voltage.
Dip switch
#5 is the voltage
selector 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.
Slave #2
inconsistent.
Same as
error 9 for slave
#1.
Slave #3
inconsistent.
Same as
error 9 for slave
#1.
1 2 3 4 5 6
Temperature
probe 2 short. Airflow open. Airflow short.
7 8 9 10 11 12
Misc Error Numbers
and the "RX" "TX" 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".
If two or more heaters are connected together through the serial link, and the
master cannot communicate with a slave controller, the master will display
Multiple Heater Error Conditions
Note: Temperature sensor connection-the temperature
sensor (bolt) must always be connected to the master.
(Errors 9 through 11 are displayed only if multiple heaters
are tied together through serial link).
+11 volt DC
shorted to
ground.
13
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 re-
set powering up
with the sole-
noids off.
Flame probe
short error. Illegal flame
sense.
Error 7 is
most likely
caused by stuck
open solenoid.
Error 7 will not
shutdown fan
until loss of
flame is detected
by control.
Temperature
probe 2 open. Temperature
probe 1 short. Temperature
probe 1 open.
This indicates
that one of the
other on screen
errors (vapor,
plenum or
housing temp hi-
limit or flame out
or no airflow has
occurred).
000
"SLA" on the main display