R7999C CONTROLINKS™ CONTROLLER
32-00081EF—01
12
CHECKOUT AND
TROUBLESHOOTING
Fault Codes
The R7999C ControLinks™ Controller is designed so that
only an unrecoverable internal related fault will cause
lockout. The R7999C will recycle when specific external
problems are detected and then cleared.
When the R7999C locks out, obtain the fault code (a
repeating series of blinks from the POWER LED) by
pressing and holding the Reset button. To interpret the
LED flashes, for example, a Fault 11 would be one slow
blink and one fast blink, while a Fault 67 would be six slow
blinks followed by seven fast blinks.
See Table 7 for fault codes and descriptions. The fault code
with text description can be observed using the laptop
computer commissioning tool, or a touchscreen display.
Table 7. Fault Listings and Descriptions.
Fault/
Blink
Code
Description
Corrective Action
11
Device is operating properly.
13
MV input energized at an improper time.
Reset control. Check Burner Control Interface wiring and correct error. This
error causes the device to remain in initiate state at power up.
14
HF and LF are energized at the same time.
Reset control. Check Burner Control Interface wiring and correct error. This
error causes the device to remain in initiate state at power up.
15
Transition to the requested Burner Control input state is not allowed from the
current state. E.g. Standby to Modulate, RUN/TEST between modes, of limits
are interrupted is not allowed.
R7999C is checking the following inputs: LF, HF, MV, LCI and outputs: LFP,
HFP, and LCO. If any of these inputs/outputs are in the wrong state, this fault
will occur.
Reset control. Check wiring to burner control and R7999C.
Moving a RM7800 Run/Test switch to Test will induce this fault during
commissioning mode.
21
Internal error—Time Base (Microprocessor test failed).
Reset control
a
22
Internal error—Safety relay (internal safety relay test failed).
Reset control
a
23
Internal error—Safety relay (internal safety relay test failed).
Reset control
a
24
Internal error—Time storage (Microprocessor test failure).
Reset control.
a
25
Internal error—Limited move (Actuator moving to a position
during commissioning mode).
Reset control.
a,c
Check the feedback pot on the actuator indicated by the LED
26
Internal error—Targeted move (actuator moving to a position,but not getting
to the postions).
Reset control.
a,c
(Can get this if you push the CW/CCW buttons on the
actuator after commissioning is done)
27
Internal error—LVD (low voltage detect, the R7999C has detected a low
voltage condition of less than 98 vac).
Reset control.
a
28
Internal error—ISR check (internal safety relay check, microprocessor check).
Reset control.
a
31
Internal fault—A2D Range (analog to digital actuator feedback pot shorted or
out of range).
Reset control.
a
Check actuator wiring; see Channel LED for actuator at fault.
32
Internal fault—A2D cross-matching error (happens after commissioning
process has been completed, and the burner control has been given a call for
heat - terminal 14 high).
Reset control.
a
33
Internal fault—LCO Drive (terminal 14 is off when it should be on. Check
terminal 14 for 120vac. Internal relay could be welded or shorted).
Reset control.
a
Replace the R7999C.
34
Internal fault—LCO/I Feedback (terminal 14 is on when it should be off. and
LCI terminal 13 is off).
1. Reset control
b
.
2. Terminal 14 has voltage present from external source; correct wiring error.
3. Make sure that short does not exist at terminal 14. Control will need
replacement if a sustain fault code 34 exists after steps 1, 2 and 3 are
performed.
35
Internal fault (safety relay feedback - check for noise induced from the
system).
Reset control.
a
36
Fuel selection error.
1.Check wiring through fuel select switch. Only one fuel can be selected at
any one time. This error causes the device to remain in initiate state.
2. No fuel selected. Correct by selecting fuel.
37
Fault—HFP or LFP output.
Verify correct wiring from the R7999C terminals 8 and 9 to burner control;
specifically check wiring at LFP and HFP.
38
Internal Fault—Memory curve.
Reset control.
a
(Micro bad, replace R7999C)
39
Internal Fault—AC sampling.
Reset control.
a
41
Feedback potentiometer Interface circuit fault—Air.
Verify correct wiring of potentiometer.
a
42
Feedback potentiometer Interface circuit fault—Fuel 1.
Verify correct wiring of potentiometer.
a
43
Feedback potentiometer Interface circuit fault—Fuel 2.
Verify correct wiring of potentiometer.
a
