Maintenance Due
Honeywell Scheduled maintenance interval reached

Controller shows 'Maintenance Due', 'Service Soon', or similar reminder; generator still operates normally.

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Possible Causes

Run hours exceeded oil change interval, Time-based maintenance reminder, Missed previous service reset

How to Fix / Troubleshooting

Safety first: Turn OFF the generator and disconnect battery negative before performing maintenance.

Steps:

  • Perform scheduled service: Change engine oil and oil filter, replace air filter and spark plugs, and inspect fuel system per the Honeywell maintenance schedule.
  • General inspection: Check battery, cables, enclosure, and wiring for corrosion or damage.
  • Reset maintenance timer: Use the controller interface to reset the maintenance interval according to the manual.
  • Test run: After service, run a manual test to verify proper operation.
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Repair Difficulty

Easy 2/5

Required Part

Oil Filter
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