Troubleshooting guide
Suburban tank water heater winterizing, drain, or freeze risk
Use this when a Suburban tank water heater must be drained for freezing storage, bypassed for antifreeze, or checked after possible freeze exposure.
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 off electrical power, LP, and water pressure, then let stored water cool before draining.
- Drain the water heater and follow the RV manufacturer's instructions for the whole water system before freezing storage.
- Do not relight or energize the heater until the tank is refilled and air is removed from the tank and lines.
- Call qualified service for damaged fittings, leaks, blocked drains, or suspected freeze damage.