CleaverBrooks ProFire Q Series, Installation Operation & Maintenance

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Troubleshooting
6-12
750-437
Q Series Full Modulation
82
Any # Error during VSD's speed standardization An error occurred while attempting to standardize the speed of the VSD. See diagnostic
codes for more information.
1
Timeout of standardization (VSD ramp
down time too long)
Standardization timed out because the VSD took too long to ramp down at the end of the
standardization. Either decrease the ramp down time in the VSD or increase the setting of
parameter 523.
2
Storage of standardized speed not
successful
Press the info button with any other button to cause a manual lockout, then reset the fault
and attempt to standardize again.
82
3 Line interruption speed sensor
No pulses from the speed sensor were detected during standardization.
1) Verify that the motor is rotating.
2) Check the wiring between the speed sensor and the LMV3.
3) Check and / or adjust the gap between the speed wheel and the sensor. The gap should
be about 1/16" (2mm), or about two turns away from the speed wheel.
4
Speed variation / VSD ramp up time too
long / speed below minimum limit for
standardization
A stable speed was not reached after ramping up the VSD, so a standardized speed could
not be determined.
1) Either decrease the ramp up time in the VSD or increase the setting of parameter
522.
2) Check for filters, damping, or delays on the input signal to the VSD. The VSD should
respond to the input signal in a linear fashion.
3) Ensure that the VSD and LMV3 are configured for the same analog signal (0-10
VDC).
5 Wrong direction of rotation
1) Check to see if the motor's direction of rotation is correct. Reverse if necesssary.
2) Check to see if the arrow on the speed wheel points in the correct direction of
rotation. Reverse if necessary.
6 Unplausible sensor signals
1) Check the setting of parameter 643 and ensure it is set correctly. For VSD + 3-phase
motor, this should be a 0. For most brushless DC blowers, this should be a 1.
2) Check and / or adjust the gap between the speed wheel and the sensor. The gap should
be about 1/16" (2mm), or about two turns away from the speed wheel.
3) Check the wiring of the speed sensor. Ensure the reference ground is properly
connected.
4) Ensure that other metal parts besides the speed wheel are not being picked up by
the sensor when the motor rotates.
7 Invalid standardized speed
The standardized speed measured does not lie in the permissible range (650-14,000
RPM).
15 Speed deviation µC1 + µC2 Reset the fault and repeat the standardization.
82
20 Wrong phase of phase manager Standardization must be performed in standby (phase 12).
21 Safety loop / burner flange open
Fix any conditions causing a limit in the safety loop / burner flange circuit to be open, then
attempt to standardize again.
22 Air actuator not referenced
Typically caused by trying to standardize while the air actuator is currently referencing.
Wait for the actuator to finish referencing and try to standardize again. If the fault persists,
see error code 85, diagnostic code
1 for additional troubleshooting.
23 VSD deactivated
The VSD must be activated before standardization can be performed. Set parameter 542 to
a 1 and attempt to standardize again.
24 No valid operation mode
A fuel train must be selected before standardization can be performed. Select a fuel train via
parameter 201 (fuel 0) or 301 (fuel 1), then attempt to standardize again.
25 Pneumatic air-fuel ratio control
Standardization cannot be performed when using a pneumatic fuel train. Select a different
fuel train via parameter 201 (fuel 0) or 301 (fuel 1), then attempt to standardize again.
128
Running command with no preceding
standardization
A call for heat was received and the VSD is activated (parameter 542 = 1), but no
standardization has been performed. Perform a standardization by setting parameter 641
to a 1 while in standby phase 12, or deactivate the VSD by setting parameter 542 to 0.
255 No standardized speed available Perform a standardization by setting parameter 641 to 1 while in standby (phase 12).
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.