7574
for flashing error codes on the controller’s LEDs.
2. The solar panel is undersized.
3. The solar panel is shaded or not located in full sun.
4. The battery is defective.
SOLENOIDS
Valves Are Not Opening
1. Check if the positive and negative wires are reversed.
2. Make sure that each valve has a separate negative return wire
connected to the correct terminal. A common ground wire
cannot be used and will not work.
3. Check if the proper PWM setting is used for each valve.
4. Check if the valve voltage ratings match the system voltage
(12V or 24V).
System Shuts Down With Terminal Card Command Refused, Master
Power, Solenoid Feedback.
Check the solenoid wiring to make sure that no wires are
crossed and that separate return wires are used for each
valve.
STATUS CONTACT
Status Contact Opens but System Continues To Run
Check that the system has the latest firmware. Some
firmware versions older than v1.8.005 had a bug that might
lead to this under certain circumstances. If you can’t update
your firmware immediately, repositioning the flame rod so
that it is more fully immersed in the flame can lessen the
occurrence of this issue.
Status Contact Remains Closed Even When The System is Stopped
The status contacts are polarity sensitive. Try reversing the
Status+ and Status- wires.
Status Contact Never Closes
The current or voltage ratings on the status contact may
have been exceeded. Verify that you are not exceeding these
ratings. If the ratings were exceeded, check the terminal
Card HW version to determine the appropriate solution. (v1.6:
Replace the Terminal Card.) (v1.7: Replace the Status Contact
Fuse on the Terminal Card.)
THERMOCOUPLES
Thermocouple Readings are Bouncing
1. Verify that the Valve PWM Settings are correct for the valves
being used. Using incorrect settings for a valve can result in
more noise than necessary. The lowest noise will result when
the PWM setting is set to 20% for low power valves and
100% for regular valves.
2. Verify that proper system grounding is in place. Especially
check that all solenoids are connected to earth ground.
Thermocouple Readings are Incorrect
1. Check if the thermocouple wiring polarity is reversed. Yellow
should be connected to positive, and red to negative.
2. Check that no thermocouple pairs are crossed (ie, positive
from one TC paired with negative from another TC).
3. Make sure that only Type-k thermocouple wire and connectors
are used. Even small sections of other types of wire can
significantly disrupt the measurement.
4. If a head connection is used, verify that none of the above
wiring issues exist there either.
5. Check if the thermocouple is defective by trying a different
thermocouple that is known to be good or by connecting the
suspect thermocouple to a process calibrator.
6. Check that the PF2100 is in proper calibration using a process
calibrator. If not, recalibrate the system.
6.2 | Shutdown Messages
The following is a list of messages that may flash on the PF2100 display after the system has shutdown.
Typically, the word “SHUTDOWN” in large text will flash alternately with one of the messages below.
These messages indicate the reason that the system last shutdown and can be cleared by pressing the
OK key (except where noted). Use the table below to determine the meaning of these messages. This
table is organized alphabetically.
ON SCREEN DESCRIPTION POSSIBLE SOLUTIONS
Ambient Temps Not Equal The Ambient Temperature read by the
Door Card does not match the one
reported by the Terminal Card.
The door card and terminal card are different
temperatures. Check to see if one board is being
heated by an external source such as direct sun on
the door or being mounted on a hot tank.
Aux High Temp Aux Temp Mode is set to “Temp ESD”
and the Auxiliary Temperature exceeded
the High Temp ESD Setpoint.
Verify proper settings and check for issues outside the
system.
Aux Thermocouple Error The Auxiliary Thermocouple is open. Check wiring.
Comparison Setpoints One of the Setpoints in the Door Card
does not match the corresponding value
in the Terminal Card.
Reset system to factory defaults.
Comparison:
C_byte x y
The Door Card’s internal control byte
(x) did not match the Terminal Card’s
internal status byte (y).
Remove solenoid wires; if the problem is resolved
check the solenoid wiring. If the problem remains
the same, the boards or ribbon cable may need to be
replaced.
Comparison:
ESD DC:xxx TC:xxx
The Door Card and Terminal Card do not
agree on the state of the ESD Contact.“
xxx” will be either “ON” or “OFF”.
Remove ESD wires and jumper the terminals, if the
problem is resolved check the wiring. If the problem
remains the boards or ribbon cable may need to be
replaced.
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