Digital Controller Status Messages - Generac Power Systems MAC400HC Owner's Manual

Troubleshooting

Digital Controller Status Messages

Engine Warming — Please Wait
Engine Preheat
Engine is not ready — Check rpm, Fuel Level or Wait to
Start
Low Fuel Warning
Check heater settings or connections, then press Reset
on the Machine Overview
Heater is cooling down — Please wait
Engine is going to shutdown
Engine fault shutdown
Heater shutdown due to temperature; pressure or level
out of range
26
Message
Engine coolant temperature < 140 °F (38 °C).
Wait approximately 10 seconds after heater powers up.
Engine rpm < 500
Fuel level < 10%
Wait to Start signal
Fuel level < 20%
•
Fuel level notification appears on screen
• Low Fuel Level beacon turns on
Fuel level ≤ 16%
• Fuel level notification appears on screen
•
Heat/fan load reduced to 50%
Fuel level ≤ 12%
• Fuel level notification appears on screen
• Open heat circuit and close scroll fan circuit
•
Drop engine to idle
Fuel level ≤ 8%
• Fuel level notification appears on screen
• Engine shuts down
IFM controller detected a short or break in a sender.
IFM controller detects heater is in cool down. ON button
disabled.
Fuel level ≤ 8%
Low engine oil pressure
High engine coolant temperature
Engine overspeed
High hydraulic temperature
Low hydraulic pressure
Low hydraulic level
Owner's Manual for Flameless Heat Cart
Cause