Meaning for the LMV3 System 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.
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).
Any # Speed error VSD A VSD speed error occurred. See diagnostics codes for more information.
1 Lower control range limitation of control See error code 80, diagnostic code 1.
2 Upper control range limitation of control See error code 80, diagnostic code 2.
4 Interruption via disturbance pulses See error code 81, diagnostic code 1.
8 Curve too steep in terms of ramp speed See error code 84.
16 Interruption of speed signal
No speed signal was detected.
1) Ensure that the motor is rotating. If it is not, check the wiring of the
VSD / PWM blower.
2) If using a VSD, turn the motor by hand to ensure that the LED on the
speed sensor lights up when it sees the speed wheel. If it does not,
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