Magnum MMG150DCAN6 troubleshooting: 7 fault codes and 7 symptom-cause-remedy entries from the manufacturer's own service documentation.
Magnum MMG150DCAN6 — full specs, parts & maintenance.
| Code | Meaning |
|---|---|
| Wrn Gen L1<V | Warning: Generator Line 1 Voltage < V |
| Sd Gen L1 <V | Shutdown: Generator Line 1 Voltage < V |
| Sd Gen L2 <V | Shutdown: Generator Line 2 Voltage < V |
| Sd Gen L3 <V | Shutdown: Generator Line 3 Voltage < V |
| SD | Engine Temp Sd |
| Wrn | Engine Temp Wrn |
| WRN | SprinkIActive |
| Symptom | Cause | Remedy |
|---|---|---|
| WrnMaintenance displayed when the unit is due for maintenance or service | Reset the "ServiceTime" reminder to the 250 hour interval: with the unit shut down, power up the controller with the "CONTROL ON/OFF" toggle switch; press the "PAGE SELECT" button; press the down button to move the cursor to the "Engine Protect" line; press "ENTER"; press "ENTER" again; press the up button and reset the current run time hour setting to 250; press "ENTER" to save; move the "CONTROL ON/I" toggle switch to the "CONTROL OFF/O" position | |
| Low fuel level shutdown | Fuel level low; leaks in the fuel tank; damaged fuel level sender or connecting wiring | Check the fuel level on the LCD window and confirm the generator is sitting level; check for leaks in the fuel tank; if the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring for damage and check for continuity between the sender and the engine controller |
| Low oil pressure shutdown | Low engine oil level; oil leaks; loss of oil pressure; faulty oil pressure sender | Check the level of the engine oil with the dipstick and add oil if required; visually inspect the engine for oil leaks; if the oil level is good, restart the unit and verify the loss of oil pressure and shut the engine down immediately if the oil pressure value does not read five psi (34 kPa) within five seconds; check the oil pressure sender and refer to the troubleshooting section of the engine operator's manual |
| Low coolant level shutdown | Low coolant level; visible leaks in coolant hoses, engine block or water pump; coolant mixed with engine oil | Allow the engine to cool; check the coolant level in the radiator and add coolant until it is 3/4 in. (1.9 cm) below the filler neck; inspect coolant hoses, engine block and water pump for visible leaks; check engine oil to verify no coolant has mixed with it and consult the engine operator's manual |
| High coolant temperature shutdown | Low coolant level; blocked radiator shroud or ducting; visible leaks in coolant hoses, engine block or water pump; loose serpentine drive belt for the water pump; engine overheating | Check the coolant level in the overflow jug; restart the engine and read the coolant temperature and stop the engine immediately if the coolant temperature is 230°F (110°C) or more; allow the engine to cool, add coolant to the overflow jug if low and check the level of coolant in the radiator, adding coolant until it is 3/4 in. (1.9 cm) below the filler neck; check the radiator shroud and ducting for blockage and remove any foreign matter; inspect coolant hoses, engine block and water pump for visible leaks; check the tension of the serpentine drive belt for the water pump; if no other problems are found, remove the load on the generator and restart the engine, check the coolant temperature and shut the engine down immediately if it starts to overheat, and consult the engine operator's manual |
| Overcrank shutdown | Low fuel level in tank; improper operation of the fuel pump; blocked air filter; starting problems | Check the fuel level in tank; check for proper operation of the fuel pump; check air filter for blockage; if the engine will not start, consult the engine operator's manual for additional information on troubleshooting starting problems |
| Overspeed or underspeed shutdown | Engine speed above or below 60.0 Hz | Disconnect all loads and restart the generator and read the frequency (Hz) on the LCD display; if the frequency is above or below 60.0 Hz, adjust the engine speed per the engine operator's manual for throttle adjustments on mechanical governed units and the electronic governor manual for electronically controlled units |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: Fuel level low; leaks in the fuel tank; damaged fuel level sender or connecting wiring. See the table for the matching fixes.
Documented causes: Low engine oil level; oil leaks; loss of oil pressure; faulty oil pressure sender. See the table for the matching fixes.
Documented causes: Low coolant level; visible leaks in coolant hoses, engine block or water pump; coolant mixed with engine oil. See the table for the matching fixes.