Generac

2745

UnclassifiedCooling

What This Code Means

Test Warning; Battery is >16V or charge current is >600mA at end of 18 hour charge cycle; Low fuel pressure; High fuel level warning; Warning on a configured IO Extender Digital Input; Low coolant detected; High oil temperature; Low oil level; Check Engine warning (emissions certified gas units)

Possible Causes

  • •Writing “1” to Modbus reg 1625
  • •Battery may be bad
  • •Fuel pressure falls below 5.2 in H2O +/- 0.4 in (below 0.19 psi)
  • •Fuel level rises above the dealer adjustable setpoint (0-99%) for 1 second
  • •Digital Input status triggered the alarm
  • •Low coolant digital input detected low coolant for greater than 5 seconds
  • •Oil temperature is > 320 °F (160 °C) while the engine is running
  • •Oil level is below limit, detected after a 60 sec hold-off since startup
  • •O2 sensor exists and is faulted (O2 sensor stuck open/closed) for 90 seconds

Suggested Actions

  1. 1Warning will auto-clear after 60 seconds. Power cycle controller
  2. 2Problem 30 – Inspect Battery* page 139
  3. 3Refer to 'Problem 34 – Low Fuel Pressure' page 141
  4. 4Check Fuel Level
  5. 5Review alarm log and address active alarms
  6. 6Refer to 'Problem 26 – Low Coolant Level' page 138
  7. 7Refer to 'Test 115 – Oil Temperature Sensor (OTS) Resistance' page 179
  8. 8Refer to 'Problem 28 – Low/High Oil Pressure' page 138
  9. 9Engine runs with no O2 sensor faults (stuck open/closed) for 4 minutes to clear warning

Related Generac Fault Codes

274601532227400153582735ATS2725E-CODE 14002720ECM-2C2710ECM-2G
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