Fault Codes And Corrective Actions - Honeywell S7999B Manual

Fault/
Blink
Code
11 Device is operating properly.
13 MV input energized at an improper time.
14 HF and LF are energized at the same time.
15 Transition to the requested Burner Control input state
is not allowed from the current state. E.g., Standby to
Modulate is not allowed.
21 Internal Error – Time base.
22 Internal Error – KEY decode.
23 Internal Error – Rdlow.
24 Internal Error – Time storage.
25 Internal Error – Limited move.
26 Internal Error – Targeted move.
27 Internal Error – LVD.
28 Internal Error – ISR check.
31 Internal Fault – A2D Range.
32 Internal Fault – A2D Matching.
33 Internal Fault – LCO Drive.
34 Internal Fault – LCO/I Feedback.
35 Internal Fault – Commanded State.
36 Fuel Selection Problem.
37 Fault HFP or LFP output.
38 Internal Fault – memory curve.
39 Internal Fault – AC sampling .
41 Feedback potentiometer Interface circuit fault—Air.
42 Feedback potentiometer Interface circuit fault—Fuel 1. Verify correct wiring of Potentiometer
43 Feedback potentiometer Interface circuit fault—Fuel 2. Verify correct wiring of Potentiometer
44 Feedback potentiometer Interface circuit fault – FGR. Verify correct wiring of Potentiometer
45 Feedback potentiometer wiper resistance problem, Air. Check for loose potentiometer wiring
46 Feedback potentiometer wiper resistance problem,
Fuel 1.
47 Feedback potentiometer wiper resistance problem,
Fuel 2.
48 Feedback potentiometer wiper resistance problem,
FGR.
49 Feedback potentiometer total resistance problem, Air. Check for loose potentiometer wiring
Table 7. Fault Codes and Corrective Actions.
Description
Reset control. Check Burner Control Interface wiring and correct
error. This error causes the device to remain in initiate state at
power up.
Reset control. Check Burner Control Interface wiring and correct
error. This error causes the device to remain in initiate state at
power up.
Check wiring to burner control and/or burner control operation.
NOTE: Moving a RM78XX Run/Test switch to Test will Induce
this fault during commissioning mode.
a
Reset Control .
a
Reset Control .
a
Reset Control .
a
Reset Control .
a,c
Reset Control .
a,c
Reset Control .
a
Reset Control .
a
Reset Control .
a
Reset Control .
a
Reset Control .
b
Reset Control .
b
1.) Reset Control . Check actuator wiring. See Channel LED for
actuator.
2.) Terminal 14 has voltage present from an external source,
correct wiring problem.
d
3.) .
a
Reset Control .
Check wiring through fuel select switch, at least one fuel must be
selected at any given time (not zero, not two).
Verify correct wiring to burner control. Specifically check wiring
at LFP and HFP.
a
Reset control .
b
Reset control .
Verify correct wiring of Potentiometer
Check for loose potentiometer wiring
Check for loose potentiometer wiring
Check for loose potentiometer wiring
61
S7999B SYSTEM DISPLAY
Corrective Action
a
.
a
.
a
.
a
.
a,c
.
a,c
.
a,c
.
a,c
.
a,c
.
65-0283—2