Index: firmware/App/Modes/ModeFault.c
===================================================================
diff -u -r6f2218c22e666aec059afbd60f3d0d268b305ad0 -r124b3745d056ac667280cfa0ae1fab8610d44ed2
--- firmware/App/Modes/ModeFault.c	(.../ModeFault.c)	(revision 6f2218c22e666aec059afbd60f3d0d268b305ad0)
+++ firmware/App/Modes/ModeFault.c	(.../ModeFault.c)	(revision 124b3745d056ac667280cfa0ae1fab8610d44ed2)
@@ -96,6 +96,8 @@
     signalDialInPumpHardStop();
     signalDialOutPumpHardStop();
     stopSyringePump();
+    // Request trimmer heater turned off
+    cmdStopDGTrimmerHeater();
     // Ensure all valves are in safe position
     setValveAirTrap( STATE_CLOSED );
     setValvePosition( VDI, VALVE_POSITION_C_CLOSE );