Troubleshooting guide
Suburban tank water heater RESET light or ignition lockout
Use this when a Suburban D, DE, or DEL tank water heater leaves the red RESET light on after ignition tries or does not heat on LP.
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
- Turn the water heater off and confirm the tank is filled with water before any restart.
- If the manual reset path applies, wait five seconds before one normal switch restart.
- Stop repeated reset attempts if the red RESET light returns or the heater does not ignite.
- Record LP state, switch position, water-heater model, and whether this is first startup after LP service for a Suburban authorized service center.