Fan and Heater | ERROR CONDITIONS |
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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).
Multiple Heater Error Conditions
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
Misc Error Numbers
"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 master displays "SLA ERROR".
1
Temperature probe 1 open.
7
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.
13
+11 volt DC shorted to ground.
2
Temperature probe 1 short.
8
Flame probe short error.
000
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).
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| 6 |
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Temperature |
| Temperature |
| Airflow open. |
| Airflow short. | ||
probe 2 open. |
| probe 2 short. |
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9 |
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| 11 |
| 12 |
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Slave #1 incon- |
| Slave #2 |
| Slave #3 |
| Wrong voltage. | ||
sistent with mas- |
| inconsistent. |
| inconsistent. |
| Dip switch | ||
ter with either |
| Same as |
| Same as |
| #5 is the voltage | ||
the drying grain |
| error 9 for slave |
| error 9 for slave |
| selector switch. | ||
flag or the LP | #1. |
| #1. |
| If dip switch #5 | |||
main solenoid or |
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| in "ON" that se- | |
cycle solenoid. |
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| lects 240 VAC. | |
Most likely |
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| If the unit has | |
the slave got re- |
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| only 120 VAC | |
set powering up |
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| applied, error 12 | |
with the sole- |
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| will show up. If | |
noids off. |
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| dip switch #5 is | |
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| "OFF" that se- |
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| lects 120 VAC. If |
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| the unit has 240 |
(Errors 9 through 11 are displayed only if multiple heaters |
| VAC applied er- | ||||||
| ror 12 will show | |||||||
are tied together through serial link). |
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Note: Temperature sensor |
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sensor (bolt) must always be connected to the master. |
| portant because | ||||||
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| if the fan heater |
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| is set up at GSI |
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| for 120 VAC and |
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| the customer |
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| connects to 240 |
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| VAC the heater |
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| control will work, |
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| but if allowed to |
The heater
control display
showing error #7.
operate the so- |
lenoids will |
have 240 VAC |
applied to them |
which will dam- |
age solenoids. |
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