Index: firmware/App/Controllers/DrainPump.c
===================================================================
diff -u -rc7ea3969643ead419cbfcd34c3cb203c45bcad71 -rd680119f67ff8eb866d75b0629039b8d284bf104
--- firmware/App/Controllers/DrainPump.c	(.../DrainPump.c)	(revision c7ea3969643ead419cbfcd34c3cb203c45bcad71)
+++ firmware/App/Controllers/DrainPump.c	(.../DrainPump.c)	(revision d680119f67ff8eb866d75b0629039b8d284bf104)
@@ -87,8 +87,10 @@
 #define DRAIN_PUMP_FORWARD_DIR                 1                                                                ///< Drain pump forward direction.
 #define DRAIN_PUMP_DIR_BIT_MASK                0x80                                                             ///< Drain pump direction bit clear mask.
 #define DRAIN_PUMP_DIR_ERROR_CNT_BIT_MASK      0x3F                                                             ///< Drain pump direction error count bit mask.
-#define DRAIN_PUMP_DIR_FPGA_ERROR_TIMEOUT_MS   ( 2 * MS_PER_SECOND )                                            ///< Drain pump direction hall sensor FPGA error time out in milliseconds.
 
+#define MAX_FPGA_DRAIN_PUMP_DIRECTION_FAULT_WINDOW_MS ( 1 * SEC_PER_MIN * MS_PER_SECOND )                       ///< FPGA drain pump direction fault window
+#define MAX_FPGA_DRAIN_PUMP_DIRECTION_FAULT_FAILURES           10                                               ///< FPGA drain pump direction fault failures per MAX_FPGA_DRAIN_PUMP_DIRECTION_FAULT_WINDOW_MS
+
 /// Enumeration of drain pump states.
 typedef enum DrainPump_States
 {
@@ -138,6 +140,9 @@
 static const F32 RPM_CONVERSION_COEFF     = (F32) SEC_PER_MIN / ( 2.0F * TOGGLE_PERIOD_RESOLUTION_SECONDS * ROTATIONAL_TO_TOGGLE_PERIOD_CONVERSION );
 static const F32 CURRENT_CONVERSION_COEFF = (F32)( 2.5F / ( BITS_12_FULL_SCALE - 1.0F ) );
 
+/// Drain pump hall sensor failure count
+static U32 lastDirHallSensorErrorCount = 0;                                                                      ///< Last drain pump encoder errors for hal sensor
+
 // ********** private function prototypes **********
 
 static DRAIN_PUMP_STATE_T handleDrainPumpOffState( void );
@@ -156,7 +161,7 @@
  * drainPumpControlMode, drainPumpControlModeSet, targetDrainPumpRPM,
  * targetDrainPumpOutletFlowLPM, drainControlTimerCtr,
  * pendingDrainPumpCmd, pendingDrainPumpCmdTarget, pendingDrainPumpCmdCountDown,
- * hasClosedLoopBeenRequested, signalNewRPMRequest,
+ * hasClosedLoopBeenRequested, signalNewRPMRequest, lastDrainPumpEncoderErrors,
  * drainPumpDataPublicationTimerCounter, isDrainPumpControlInFlowMode
  * @return none
  *************************************************************************/
@@ -179,6 +184,7 @@
     signalNewRPMRequest                  = FALSE;
     drainPumpDataPublicationTimerCounter = DATA_PUBLISH_COUNTER_START_COUNT;
     isDrainPumpControlInFlowMode         = TRUE;
+    lastDirHallSensorErrorCount          = 0;
 
     // Initialize the drain pump PI controller
     initializePIController( PI_CONTROLLER_ID_DRAIN_PUMP, DRAIN_PUMP_MIN_DAC, DRAIN_PUMP_P_COEFFICIENT, DRAIN_PUMP_I_COEFFICIENT,
@@ -190,8 +196,9 @@
     initPersistentAlarm( ALARM_ID_DG_DRAIN_PUMP_CURRENT_OUT_OF_RANGE, DRAIN_PUMP_CURRENT_OUT_OF_RANGE_TIMEOUT_MS, DRAIN_PUMP_CURRENT_OUT_OF_RANGE_TIMEOUT_MS );
     initPersistentAlarm( ALARM_ID_DG_DRAIN_PUMP_DIRECTION_INVALID, DRAIN_PUMP_DIR_OF_RANGE_TIMEOUT_MS, DRAIN_PUMP_DIR_OF_RANGE_TIMEOUT_MS );
 
-    initFPGAPersistentAlarm( FPGA_PERS_ERROR_DRAIN_PUMP_DIR_HALL_SENSOR, ALARM_ID_DG_DRAIN_PUMP_DIRECTION_FPGA_FAULT,
-                             DRAIN_PUMP_DIR_FPGA_ERROR_TIMEOUT_MS, DRAIN_PUMP_DIR_FPGA_ERROR_TIMEOUT_MS );
+    // initialize FPGA drain pump  hall sensor error
+    initTimeWindowedCount( TIME_WINDOWED_COUNT_FPGA_DRAIN_PUMP_HALL_SENSOR_ERROR, MAX_FPGA_DRAIN_PUMP_DIRECTION_FAULT_FAILURES, MAX_FPGA_DRAIN_PUMP_DIRECTION_FAULT_WINDOW_MS);
+
 }
 
 /*********************************************************************//**
@@ -356,7 +363,14 @@
         if ( getHardwareConfigStatus() != HW_CONFIG_BETA )
 #endif
         {
-            checkFPGAPersistentErrorCountAlarm( FPGA_PERS_ERROR_DRAIN_PUMP_DIR_HALL_SENSOR, dirHallSensorErrorCount );
+            if ( dirHallSensorErrorCount != lastDirHallSensorErrorCount )
+            {
+                if ( TRUE == incTimeWindowedCount( TIME_WINDOWED_COUNT_FPGA_DRAIN_PUMP_HALL_SENSOR_ERROR ) )
+                {
+                    SET_ALARM_WITH_2_U32_DATA( ALARM_ID_DG_DRAIN_PUMP_DIRECTION_FPGA_FAULT, MAX_FPGA_DRAIN_PUMP_DIRECTION_FAULT_FAILURES, dirHallSensorErrorCount )
+                }
+                lastDirHallSensorErrorCount = dirHallSensorErrorCount;
+            }
         }
 
         switch( drainPumpState )