Grain Systems PNEG-1314 User Manual

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2003 Top Dry Service School

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 originates.
The master displays "SLA ERROR".

Two or more heaters may be connected together through

Multiple Heater Error Conditions

Limit Switches

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 sole-
noids 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 sole-
noids will have
240 VAC applied
to them which
will damage sole-
noids.

Plenum tempera-
ture probe 1
open

Plenum tempera-
ture 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 individually on

the heaters LCD screen:

PLENUM, HOUSING, VAPOR, TEMP HI LIMIT

(Errors 9 through 11 are displayed only if multiple heaters are

tied together through serial link).

Note: Temperature sensor connection-the temperature sen-

sor (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.

the serial link. If the master cannot communicate with a
slave controller, the master will display "SLA" on the
main display and the "RX" "TX"