Brute MagnaTech BMGH1600, Инструкция по установке и эксплуатации

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Page 73
MagnaTech
BOILERS AND VOLUME WATER HEATERS
Section 12
TROUBLESHOOTING
12.1 Lockouts, Holds, and Alerts
The control system on the MagnaTech
responds to three kinds of trouble
indications:
• LOCKOUT: A “lockout” is caused by
a serious problem that might involve a
safety issue. Once the controller enters a
lockout, the burners will shut down, and will
not be allowed to run again until the cause
of the problem is corrected, and the control
is manually reset. The controller will also
lockout if you change a safety-related
parameter, and the unit will require ‘Safety
Verification’ before the control will be
allowed to operate. (For more information
on verification, see Section 9) During a
lockout condition, the image of the affected
controller on the ‘home’ screen will appear
in red. A bell symbol will appear in the
upper left-hand corner of the control
screen. The system maintains a “history”
of the 15 most recent lockouts.
• HOLD: The system may enter a “hold” for
a period of time before locking out. This
allows the controller to see if the error
becomes resolved prior to the hard lockout.
Holds may also show during ignition
sequence and normal operation, as the
control moves from one task to another.
• ALERT: An “alert” indicates that some
feature of the control system’s operation
was not correct, delayed or waiting for
a response. This indicates a change in
state of the control system and doesn’t
necessarily mean there is a problem. For
example, Alerts occur as the fan speed
transitions from the pre-purge to the
startup. This indicates that the control
system is waiting for a condition to be
satisfied. No Reset is required to recover
from an alert. The system maintains a
“history” of the 15 most recent alerts.
Sometimes it can be helpful to check this
list as a troubleshooting aid.
12.1.1 Responding to a Lockout, Hold, or Alert
1. If a problem occurs while the system is
starting up, the system will declare a Hold.
A brief explanation of the cause of the
Hold will appear in an orange bar across
the bottom of the screen. If you tap the
orange bar, the system will present more
information about the Hold.
Correct the cause of the problem, and press
the button on the screen to clear the Hold.
2. If a serious problem continues, the system
will Lockout. A brief explanation of the
cause of the Lockout will appear in an
orange bar across the bottom of the
screen. If you tap the orange bar, the
system will present more information about
the Lockout.
Correct the cause of the problem, and press
the Reset button.
3. If an Alert occurs while the system is
running, the system will present a note
across the bottom of the screen. If you
tap the orange bar, the system will present
more information about the Alert. Press the
OK button to indicate that you have seen
the Alert.
4. If an audible alarm on the display is active,
you can use the Silence button to stop it.
12.1.2 Viewing the Lockout and Alert
Histories
If your boiler is in a Lockout status, the Home
Screen will be look like Menu 29
1. To view the Lockout/Alert history, start at the
‘home’ screen Menu 29.
Menu 29. ‘Home’ screen (
shown in Lockout
)
2. Touch the Control Icon in the center of the
screen and the Status Summary Screen
will appear.