Index: firmware/App/Controllers/ROPump.c
===================================================================
diff -u -rff9e67dd840fc373a4aedc8b3af21e08b28efe99 -re2406180bf569fb495b709542c12da099c8e23ea
--- firmware/App/Controllers/ROPump.c	(.../ROPump.c)	(revision ff9e67dd840fc373a4aedc8b3af21e08b28efe99)
+++ firmware/App/Controllers/ROPump.c	(.../ROPump.c)	(revision e2406180bf569fb495b709542c12da099c8e23ea)
@@ -436,17 +436,26 @@
 
                 case DG_MODE_FILL:
                 case DG_MODE_FLUS:
-                case DG_MODE_HEAT:
                 case DG_MODE_CHEM:
-                case DG_MODE_HCOL:
                 case DG_MODE_CHFL:
                 case DG_MODE_ROPS:
-                   // The flow cannot be out of range for than 10% of the target flow
+                    // The flow cannot be out of range for than 10% of the target flow
                     isFlowOutOfRange      = ( fabs( 1.0F - ( currentFlowLPM / targetFlowLPM ) ) > MAX_ALLOWED_FLOW_DEVIATION_PCT ? TRUE : FALSE );
                     isFlowOutOfUpperRange = ( isFlowOutOfRange && ( currentFlowLPM > targetFlowLPM ) ? TRUE : FALSE );
                     isFlowOutOfLowerRange = ( isFlowOutOfRange && ( currentFlowLPM < targetFlowLPM ) ? TRUE : FALSE );
                     break;
 
+                case DG_MODE_HEAT:
+                case DG_MODE_HCOL:
+                    if ( getTargetROPumpPressurePSI() > CLEANING_MODE_HIGH_TEMP_MAX_RO_PRESSURE_PSI )
+                    {
+                         // The flow cannot be out of range for than 10% of the target flow
+                         isFlowOutOfRange      = ( fabs( 1.0F - ( currentFlowLPM / targetFlowLPM ) ) > MAX_ALLOWED_FLOW_DEVIATION_PCT ? TRUE : FALSE );
+                         isFlowOutOfUpperRange = ( isFlowOutOfRange && ( currentFlowLPM > targetFlowLPM ) ? TRUE : FALSE );
+                         isFlowOutOfLowerRange = ( isFlowOutOfRange && ( currentFlowLPM < targetFlowLPM ) ? TRUE : FALSE );
+                    }
+                    break;
+
                 default:
                     // Do nothing in the rest of the modes.
                     // Do not check the flow target in heat disinfect active cool since the flow during cooling might be very different from the target flow