Rehlko

FAIL TO ACQUIRE PREF

UnclassifiedSensors

What This Code Means

Fail to Acquire Preferred Source fault is activated; Problems with transfer switch operation

Possible Causes

  • •Preferred source does not reach acceptable voltage and stabilize within the allowed time
  • •Preferred source voltage or frequency out of range

Suggested Actions

  1. 1Check the time delays when troubleshooting problems with transfer switch operation
  2. 2Compare operation to the test sequence described in Section 1
  3. 3Initiate a test and observe as each programmed time delay executes
  4. 4Use Kohler SiteTech software via a personal computer connected through the controller's USB port to change settings on MPAC 750 controllers
  5. 5Use the View Time Delays screen or Kohler SiteTech software via a personal computer connected through the controller's USB port to check settings on MPAC 1200 and MPAC 1500 controllers

Related Rehlko Fault Codes

FAIL TO ACQUIRE STBYFAIL TO TRANSFERERRATICSIGFAILTOTRANSFERAUXSWITCHOPENFAILURE TO TRANSFERAUXSWITCHFAULTFAILURE TO TRANSFER WARNINGAUXILIARYSWITCHFAULTFAILURETOTRANSFERAUXILIARY SWITCH OPENLOSSOFCOMAPM
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