Troubleshooting guide
Dometic OD-5001 startup or lockout behavior
Use this when an OD-5001 on-demand water heater will not start normally, needs first-use air purge, fails ignition, or lights the optional lockout lamp.
Use this atlas to identify likely meaning and prepare for service. Shut off power, LP gas, fuel, or water when a listed appliance condition involves flame, gas smell, exhaust, generator shutdown, high temperature, moving jacks/slides, refrigerant, 120 VAC, control boards, repeated ignition failure, or a persistent lockout. Call the appliance maker, RV dealer, or a qualified RV technician for repair.
Owner-safe checklist
- Pressurize the water system and purge air from hot-water lines from normal faucets.
- Confirm 12V power and LP supply using normal RV controls only.
- Reset ignition only with the water-heater power switch after one failed start attempt.
- Turn the appliance off and call service if overheating occurs, gas does not shut off, or lockout returns.