Description of the Fault Corrective Action
22 Safety loop open
Check all of the switches wired into the safety loop on terminal X3-04.1. One of the switches opened,
causing the fault. Fix the condition that caused the switch to open and reset the fault.
60 Analog input out of range
The 4-20 mA input connected to terminal X65 is out of range. This input determines the position of the
actuator or speed of the PWM blower. Check the wiring of the analog input. If a fault is not desired when
the input drops below 4 mA, set parameter 654 to a 5.
83 PWM blower speed fault
The speed of the PWM blower does not match the expected speed. More specifically, the blower speed fell
outside of tolerance band 1 (parameter 650.00) for a time longer than the maximum speed deviation
allowed (parameter 660), or the blower speed fell outside of tolerance band 2 (parameter 650.01). There
are many possible corrective actions:
1. Increase ramp time up (parameter 522) and/or ramp time down (parameter 523) to allow the blower
more time to achieve the expected speed.
2. Increase the setting of tolerance band 1 (parameter 650.00) and/or tolerance band 2 (parameter
650.01).
3. Ensure that the maximum fan speed (parameter 519) and the number of pulses per revolution
(parameter 644) are set correctly for the blower being used.
4. Inspect wiring from PWM blower to LME7 to ensure the tachometer speed feedback signal is wired
correctly.
138 Restore process successful
There is no fault. This fault occurs when a parameter set was successfully restored from the PME7 program
module to the LME7 base unit. Reset the fault.
139 No program module detected
This fault occurs when no PME7 program module is plugged into the LME7 base unit. Insert a PME7
program module into the LME7 base unit and reset the fault.
167 Manual lockout
A manual lockout is caused by pressing the info button and any other button, either on the LME7 base unit
or on the AZL23 remote display. Reset the fault.
206 Inadmissible combination of units (LME7 / AZL23) Reset the LME7. If the fault occurs continuously, replace the LME7 and / or AZL23.
225 PWM blower speed fault
The speed of the PWM blower dropped below the minimum prepurge speed (parameter 675.00) during
prepurge, or the speed of the PWM blower exceeded the maximum ignition speed (parameter 675.01)
during ignition. Adjust parameter 675.00 or 675.01, or adjust purge speed (503.01) or ignition speed
(403.00).
226 PWM blower parameterization error
The following parameter settings are not allowed. Correct the parameter setting that is incorrect and reset
the fault.
1. Speed low-fire (P1) > speed high-fire (P2)
2. Speed low-fire (P0) = 0
3. Maximum blower speed (parameter 519) = 0
Section 7 Page 5 SCC Inc.
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