RV Furnace Troubleshooting Guide (Suburban & Atwood)
Suburban and Atwood forced-air furnaces — the ducted heating system, not the water heater sharing the same brand name. This isolates the fault to ignition, not the blower motor.
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond.
Suburban and Atwood forced-air furnaces — the ducted heating system, not the water heater sharing the same brand name. This isolates the fault to ignition, not the blower motor. Check LP supply pressure, the sail switch (which confirms airflow before allowing ignition — a common failure point), and the igniter/electrode assembly for carbon buildup or a cracked ceramic.
Blower Runs but No Heat
This isolates the fault to ignition, not the blower motor.
Furnace Won’t Start at All
Check 12V supply first — furnace ignition boards are voltage-sensitive and won’t attempt ignition below a threshold the thermostat display may not warn you about.
Weak or Uneven Heat Through the Ducts
Usually a duct or register obstruction rather than a furnace fault — check that nothing is blocking floor registers, and that the return air path to the furnace itself is clear.
Related
LP Gas TroubleshootingWater Heater TroubleshootingWinterization GuideLP Gas Systems & SafetyBack to Field Guide
Related: Docs guides · Book · Pricing
Trip fee $75 within 30 miles, then $1.50/mi. Labor ~$150/hr (1-hour minimum, billed in 30-minute increments). Diagnostic $175 applied toward repair if you proceed.
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond. Credentials (text): Victron Professional Certified Installer · weBoost Authorized Installer · Peplink Certified Associate · Dometic Professional Certified.