Index: firmware/App/Modes/ModeHeatDisinfect.c
===================================================================
diff -u -r1e044a958c655d09fed725cfbc9808319b642d13 -r92eb8fea402c19b6d250651f9e11b088c6d9efd1
--- firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 1e044a958c655d09fed725cfbc9808319b642d13)
+++ firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 92eb8fea402c19b6d250651f9e11b088c6d9efd1)
@@ -211,7 +211,7 @@
     setValveState ( VRF, VALVE_STATE_R2_C_TO_NO );
 
     setROPumpTargetPressure( 0, PUMP_CONTROL_MODE_CLOSED_LOOP );
-    setDrainPumpTargetSpeed( 0 );
+    setDrainPumpTargetSpeed( 0, PUMP_CONTROL_MODE_OPEN_LOOP );
     stopInletUVReactor();
     stopOutletUVReactor();
     stopPrimaryHeater();
@@ -294,7 +294,7 @@
     //TODO composition pumps
 
     setROPumpTargetPressure( 0, PUMP_CONTROL_MODE_CLOSED_LOOP );
-    setDrainPumpTargetSpeed( 0 );
+    setDrainPumpTargetSpeed( 0, PUMP_CONTROL_MODE_OPEN_LOOP );
     stopInletUVReactor();
     stopOutletUVReactor();
     stopPrimaryHeater();