Index: firmware/App/Modes/ModeDrain.c
===================================================================
diff -u -ra0f6f397d02c079dc742c8aa09a0d1ce990c0d4e -rab7dfc361e5ee347141842b317f1fc2f16e4e3f3
--- firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision a0f6f397d02c079dc742c8aa09a0d1ce990c0d4e)
+++ firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision ab7dfc361e5ee347141842b317f1fc2f16e4e3f3)
@@ -109,7 +109,9 @@
     // NOTE: The target flow rate should be set prior to setting the start primary heater
     // because the initial guess in the heaters driver needs the target flow to calculate
     // the new PWMs for the main and small primary heaters
-    //setROPumpTargetFlowRate( TARGET_RO_FLOW_RATE_L, TARGET_RO_PRESSURE_PSI );
+#ifndef DISABLE_FLOW_CONTROL_TREATMENT
+    setROPumpTargetFlowRate( TARGET_RO_FLOW_RATE_L, TARGET_RO_PRESSURE_PSI );
+#endif
     startHeater( DG_PRIMARY_HEATER );
 }