Honeywell S7999B Manual page 62

S7999B SYSTEM DISPLAY
Fault/
Blink
Code
51 Feedback potentiometer total resistance problem,
Fuel 1.
52 Feedback potentiometer total resistance problem,
Fuel 2.
53 Feedback potentiometer total resistance problem,
FGR.
54 Internal memory function problem, Air.
55 Internal memory function problem, Fuel 1.
56 Internal memory function problem, Fuel 2.
57 Internal memory function problem, FGR.
58 Stuck Reset button.
61 Actuators not reaching lightoff point.
65 Internal Memory fault.
66 Internal Initialization Error.
67 Fuel Actuator off curve (selected fuel type).
68 FGR Actuator off curve.
69 Air Actuator off curve.
71 Verifies that the Air actuator accepted the off-line, on-
line, move counterclockwise and move clockwise
commands. Furthermore, all potentiometer tests
must successfully passed to bring an actuator online.
72 Verifies that the Fuel 1 actuator accepted the off-line,
on-line, move counterclockwise and move clockwise
commands. Furthermore, all potentiometer tests
must successfully passed to bring an actuator online.
73 Verifies that the Fuel 2 actuator accepted the off-line,
on-line, move counterclockwise and move clockwise
commands. Furthermore, all potentiometer tests
must successfully passed to bring an actuator online.
74 Verifies that the FGR actuator accepted the off-line,
online, move counterclockwise and move clockwise
commands. Furthermore, all potentiometer tests
must successfully passed to bring an actuator online.
75 Internal memory fault.
76 Internal check sum error.
82 Actuator secondary fault.
83 Air actuator non-responsive.
84 Fuel 1 actuator non-responsive.
85 Fuel 2 actuator non-responsive.
86 FGR actuator non-responsive.
87 Internal math error.
65-0283—2
Table 7. Fault Codes and Corrective Actions. (Continued)
Description
Check for loose potentiometer wiring
Check for loose potentiometer wiring
Check for loose potentiometer wiring
Repeat actuator ID On-line process.
Repeat actuator ID on-line process.
Repeat actuator ID on-line process.
Repeat actuator ID on-line process.
Turn off remote reset switch. Check operation of controller
button.
Check for actuator wiring problems or stuck valves/dampers.
Place controller in standby and use actuator manual keys to
verify actuator travel.
a
Reset control .
a
Reset control . Check the wiring and range capability for both the
CmA+- input and XmA+- input (if configured).
Check for stuck fuel actuator and/or proper shielding on actuator
interface.
Check for stuck FGR actuator and/or proper shielding on
actuator interface.
Check for stuck Air actuator and/or proper shielding on actuator
interface.
Check wiring of actuator, verify correct ID is being used. Use
Actuator LED to verify that the actuator that is being brought
"online". A fast flash in the actuator equates to "off line" state
while a 1 second flash equates to an "online" state.
Check wiring of actuator, verify correct ID is being used. Use
Actuator LED to verify that the actuator that is being brought
"online". A fast flash in the actuator equates to "off line" state
while a 1 second flash equates to an "online" state.
Check wiring of actuator, verify correct ID is being used. Use
Actuator LED to verify that the actuator that is being brought
"online". A fast flash in the actuator equates to "off line" state
while a 1 second flash equates to an "online" state.
Check wiring of actuator, verify correct ID is being used. Use
Actuator LED to verify that the actuator that is being brought
"online". A fast flash in the actuator equates to "off line" state
while a 1 second flash equates to an "online" state.
a
Reset Control .
a
Reset Control
Check Actuator wiring. See Channel LED for Actuator.
Check actuator wiring and stuck damper/valve
Check actuator wiring and stuck damper/valve
Check actuator wiring and stuck damper/valve
Check actuator wiring and stuck damper/valve
a
Reset Control .
62
Corrective Action
a,c
.
a,c
.
a,c
.
c
.
c
.
c
.
c
.