CleaverBrooks ProFire Q Series, Installation Operation & Maintenance

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Troubleshooting
6-10
750-437
Q Series Full Modulation
50 Any # Internal error
If the fault occurs continuously, replace the LMV3.
51 Any # Internal error
55 Any # Internal error
56 Any # Internal error
57 Any # Internal error
58 Any # Internal error
60
Any #
Internal error: No valid load controller
source
No valid 4-20 mA signal is present on terminal X64. This could be done on purpose to
create a low fire hold. Otherwise, check wiring of 4-20 mA signal and ensure 4-20 mA
source is valid. See diagnostic codes for more information.
0
Internal error: No valid load controller
source
Reset the fault. If the fault occurs continuously, replace the LMV3.
1
Analog output preset valid - prevention of
startup
No valid 4-20 mA signal is present on terminal X64 and parameter 204 is set to 1, causing
the lockout. Re-establish a valid 4-20 mA signal and reset the fault.
2
Analog output preset valid - default output
low-fire
No fault: No valid 4-20 mA signal is present on terminal X64 and parameter 204 is set to
0, so the LMV3 is operating at low fire. The fault message appears to alert the user that a
low fire hold is enabled. To enable modulation, re-establish a valid 4-20 mA signal.
61
Fuel
Chg
Any # Fuel changeover
No fault: The LMV36 is currently in the process of changing fuels. See diagnostic codes for
more information.
0 Fuel 0 No fault: The LMV36 is currently in the process of changing from fuel 1 to fuel 0.
1 Fuel 1 No fault: The LMV36 is currently in the process of changing from fuel 0 to fuel 1.
62
Fuel Err
Any # Invalid fuel signals / fuel information
On an LMV36, either fuel 0 must be selected via line voltage on terminal X5-03.2 or fuel 1
must be selected via line voltage on terminal X5-03.3. If neither or both of these terminals
are energized at the same time, a fault will occur. See diagnostic codes for more
information.
0 Invalid fuel selection (Fuel 0 + 1 = 0)
On an LMV36, neither fuel is selected. Either select fuel 0 (apply voltage to terminal X5-
03.2) or fuel 1 (apply voltage to terminal X5-03.3).
1 Different fuel choice between the µCs
If the fault occurs continuously, replace the LMV3.
2 Different fuel signals between the µCs
3 Invalid fuel selection (Fuel 0 + 1 = 1)
On an LMV36, both fuels are selected. Remove voltage from either terminal X5-03.2 (fuel
0) or terminal X5-03.3 (fuel 1).
65 Any # Internal error
If the fault occurs continuously, replace the LMV3. 66 Any # Internal error
67 Any # Internal error
70
Any #
Internal error fuel-air ratio control:
Position calculation modulating
Check curve points to see if correct values have been entered for all actuators and the VSD.
Readjust the ratio curve if required.
23 Output invalid
26 Curvepoints undefined
Error
Code Diag. Code Description
Corrective Action
Note: Diagnostic codes are additive. If a diagnostic code appears that is not on this list, it is a combination of multiple diagnostic codes.