Grain Systems PNEG-584 User Manual

Page 22

SERIES TWO HEATER

LIMIT SWITCHES

The following limit switch errors light

up individually on the heaters LCD

screen: PLENUM, HOUSING, VA-

POR, TEMP HI LIMIT.

Note: When a shutdown does oc-

cur due to an error condition, the

amount of time elapsed since the shut-

The heater

control display

showing error

000.

Wrong voltage.

Dip switch

#5 is the voltage
selector switch. If
dip switch #5 in
"ON" that selects
240 VAC. If the
unit has only 120
VAC applied, er-
ror 12 will show
up. If dip switch
#5 is"OFF" that
selects 120 VAC.
If the unit has 240
VAC applied error
12 will show up.

This is im-

portant because if
the heater is set
up at NECO for
120 VAC and the
customer connects
to 240 VAC the
heater

control

will work, but if
allowed to operate
the solenoids will
have 240 VAC ap-
plied to them
which will damage
solenoids.

Slave #2 inconsis-
tent.

Same as

error 9 for slave
#1.

Slave #3 inconsis-
tent.

Same as

error 9 for slave
#1.

Temperature
probe 2 short.

Airflow open.

Airflow short.

MISC ERROR NUMBERS

a slave controller, the master will dis-

play "SLA" on the main display 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 originates. The mas-

ter displays "SLA ERROR".

down can be viewed by pressing the

down arrow switch (up to 218 hours).

If two or more heaters are connected

together through the serial link, and the

master cannot communicate with

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.

Slave #1 inconsis-
tent with master
with either the
drying grain flag or
the LP main sole-
noid or cycle sole-
noid.
Most likely the
slave got reset
powering up with
the solenoids off.

Flame probe short
error.

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.

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
occured.

000

ERROR CONDITIONS