Your Onan 5500 generator's fuel pump chatter and dual light illumination indicates a control board communication error triggered by the remote harness connection. This comprehensive guide covers diagnosis, repair steps, and prevention strategies for all common Onan 5500 issues.
Verify your RV spare tire is correct size and properly inflated before every trip. Tire shops sometimes install wrong sizes. Check pressure regularly as spares lose air.
When your Dometic RV fridge ignites perfectly on AUTO but fails when manually switched to gas mode, the issue is typically a faulty ignition control module or loose wiring connections. The control board may be sending conflicting signals between manual and automatic operation modes.
The 'no CO' error on your Norcold N842IM after 8-9 hours on propane is typically caused by combustion issues like a dirty burner, blocked flue, or faulty thermocouple. Start by cleaning the burner assembly and checking for proper ventilation.
It's completely normal for RV model years to differ from chassis years by 1-2 years. This happens because chassis manufacturers produce frames ahead of RV assembly, and it's an industry-standard practice, not deceptive marketing.
Code 14 is overspeed but your real issue is carburetor gummed from sitting. Choke mechanism needs cleaning to operate automatically. Clean carburetor thoroughly - jets and choke linkage. Use fresh fuel and add stabilizer to prevent future issues.
Worn Onan 10KW generator mounts cause vibration and noise. Replace with OEM parts from Cummins dealer. Most owners have shops do this due to generator weight and access challenges.
Drill mounting solar Z brackets is more secure than adhesive, especially for larger panels. Use proper Dicor sealant on all penetrations. Adhesive can fail in extreme temperatures.
Your P0581 code diagnosis is correct - the ECU is detecting high voltage on the cruise control switch circuit. Since you've eliminated external wiring and switches, the PCM likely has an internal fault requiring professional repair or replacement.
Open Roads disabled Loves app integration but physical card still works at pump. Swipe your card normally - only app-based transactions are blocked. Contact Open Roads for explanation.
Yes, many RV owners have successfully set up CARB HDIM accounts, but the system has known glitches. Your account becoming invalid after verification is a common technical issue that requires specific browser settings and persistence with CARB support.
Red fault light with partial power loss often indicates tripped breaker, one leg of 50 amp service failed, or GFCI trip. Check all breakers in main panel and find hidden GFCI outlets. May indicate transfer switch issue if breakers are fine.
A disconnected ground wire in your transfer switch box is a serious safety issue that should be immediately reconnected to the ground bus bar. This appears to be a factory wiring oversight rather than an intentional configuration.
To add electric heat while keeping the anode rod, look for kits that install in the drain port or use a combo anode/element. Avoid kits that replace the anode port entirely on cast iron tanks. The anode is critical for tank longevity.
Use lithium-compatible 24V or 36V marine charger for trolling motor batteries. MPPT solar controller required for solar charging. Never use lead-acid chargers. Quality BMS lithiums like Battleborn recommended.