Brand guide
All Suburban water heater guides
Choose the symptom or code that matches your unit. Confirm the exact model and control generation against the rating plate before following model-specific instructions.
How to Reset a Suburban RV Water Heater
Reset a Suburban ECO once with a full tank, or cycle DSI lockout after you find the cause. Repeat trips mean
Pilot and ignition problemsSuburban Igniter Clicking With No Spark
Suburban DSI click with no flame is a cracked electrode, melted wire, or lockout. Test spark with LP off.
Pilot and ignition problemsSuburban RV Heater Not Working on Gas
If a Suburban RV heater works on electric but not propane, record the model and ignition sequence. Leave spark and fuel-system tests to a technician.
Leaks and floodingSuburban RV Water Heater Leaking
A leaking Suburban RV heater may be a plug, relief valve, fitting, or split tank. Shut it down safely.
No hot waterSuburban SW10DE Troubleshooting Guide
Suburban SW10DE not heating on gas or electric? Check the ECO, bypass valves, shore power, DSI board, and igniter, starting with a full tank.
No hot waterSuburban SW6DE Troubleshooting Guide
Suburban SW6DE not heating on gas, electric, or both? Check the ECO, bypass valves, shore power, and DSI ignition, and never heat an empty tank.
No hot waterSuburban Tankless Troubleshooting
A Suburban Nautilus tankless not heating usually has an E1/E2 ignition lockout, low flow, low 12 V, an overheat code, or freeze damage.
RV water heater troubleshootingSuburban Water Heater Not Working on Electric
Suburban works on gas but not electric? Suspect no 120 V, bypass valves, a tripped ECO, or a failed element. How to check safely.