7
ANNUAL MAINTENANCE
ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD. Failure to obey the following warnings could result in
dangerous operation, property damage, serious injury, or death:
• Improper servicing could result in dangerous operation, serious injury, death, or property damage.
• Before servicing, disconnect all electrical power to the Furnace.
• When servicing the controls, label all the wires prior to disconnecting. Reconnect the wires correctly.
• Verify proper operation aer servicing.
• Failure to properly maintain the Furnace may void the Furnace warranty and can result in property damage, serious injury, or
death.
A qualified RV service technician should perform the following preventative maintenance and safety checks ANNUALLY.
AIR WHEEL: Clean and clear any obstructions. GASKETS: Inspect all gaskets for tight seals.
ORIFICE INSPECTION: Inspect the orifice annually. GENERAL: Check physical support system for sagging cracks, gaps, etc.
BURNER: Requires no adjustment, inspect annually. Clean burner with a
wire brush to remove debris and corrosion build up.
MOTOR: Requires no oiling. Permanently sealed and lubricated. Inspect
annually.
CONTROL COMPARTMENT: Remove dirt and lint.
RETURN AIR: Clean and clear obstructions.
DUCTING: Clean and clear obstructions. Reconnect any ducts that have
become loose.
VENTING: Check position of exhaust tube and Furnace chamber tube.
GAS PRESSURE TEST: Test the entire piping system. Test the gas
connections for leaks with a leak test solution.
VOLTAGE: Check power with applicable power sources (generator,
battery, and converter).
GAS SUPPLY SYSTEM: Perform a pressure drop test according to
current ANSI standards.
WIRE CONNECTIONS: Check for loose, disconnected, or worn
insulation areas.
TROUBLESHOOTING
ISSUE SOLUTION
Furnace will not light – Blower does not
turn on.
1. Check the main fuse panel for a blown fuse.
2. The Furnace-installed breaker switch may be tripped or OFF – Contact a trained RV
service provider.
3. The 12 VDC power is low; check the RV system voltage.
4. The Furnace may be in lockout. Reset the Furnace by switching the thermostat to OFF
for 10 seconds, then switch the thermostat to ON. If air is in the propane line, repeat this
process up to three times.
5. Check the intake and vents to make sure they are not blocked or obstructed.
Furnace will not light – Blower does turn on. 1. Air is in the LP line. Purge the air by turning on other appliances (like a cooktop) that are
further downstream from the LP tanks.
2. The thermostat is not set to Heat or a high enough temperature. Adjust the thermostat.
Furnace shuts off before it reaches the desired
temperature.
1. Check to make sure all the vents are open and not covered.
2. Check the air intake to make sure it is not blocked or obstructed.
REPLACEMENT PARTS
ELECTRICAL SHOCK, FIRE, EXPLOSION AND/OR CARBON MONOXIDE HAZARD. Use only Dometic replacement
parts and components, which are specifically approved for use with the Furnace. Failure to obey this warning could result in
dangerous operation, property damage, serious injury, or death:
• For replacement part information, see the DF Series Furnace Parts List. For the most current information, visit
www.eDometic.com.
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