TM 5-3895-374-24-2
EP ADDITIONAL MESSAGES
LOCKOUT MESSAGES (CONT)
DESCRIPTION
The control has held for more than 10 minutes waiting for the low fire switch
(M-D) to make
This message appears because of ignition cable noise Reroute scanner
wires away from high voltage ignition cables. Check for proper spark gap.
Check for proper grounding of wiring base and power supply. Replace worn
ignition cable and/or faulty connections.
The control has sensed an excessive current of short circuit eternal to
terminal 5, 6 or 7. The control will lockout when this event is sensed twice in
a row.
DESCRIPTIONS
The "Run-Check" switch has been placed in the "Check" position during
purge and will hold indefinitely. The firing rate motor is driven to the hi purge
position.
The "Run-Check" switch has been placed in the "Check" position during
purge and will hold indefinitely. The firing rate motor is driven to the low
firing rate position.
The "Run-Check" switch has been placed in the "Check" position during the
normal fire position and will hold indefinitely as long as flame is sensed. The
flame signal strength will be displayed. The control will lockout on safety
only if no flame signal is sensed for a continuous 30 seconds while the
control is in this check position. The control will not advance in the cycle
until the switch is placed in the "run" position again. The firing rate motor is
driven to the low firing rate position.
The "Run-Check" switch has been placed in the "Check" position during the
pilot trial for ignition period and will hold indefinitely as long as flame is
sensed. The flame signal strength will be displayed. The control will lockout
on safety only if no flame signal is sensed for a continuous 30 seconds while
the control is in this check position. The control will not advance in the cycle
until the switch is placed in the "run" position again. The firing rate motor is
driven to the low firing rate position.
POSSIBLE CAUSE
SOLUTION
-High Electrical Noise
-Check for proper ground on power supply
-Install noise suppressor on power supply
-Defective Field Wiring
-Make sure line phase on interlock
circuits is the same as found on
L1/L2 power supply to E100
-Defective Scanner
-Replace I.R. cell
-Defective Amplifier
-Replace Amplifier
-Voltage On Terminal 7 at
-Check wiring to terminal 7
improper time
Defective field wiring.
-Defective Chassis
-Replace Chassis (EB700)
-Defective Programmer
-Replace Programmer
Note: Messages more than eight characters in length will scroll from right to left on the display
continuously.
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