The return air filters should be cleaned frequently. They are located on the
motorhome ceiling inside the air intake vent covers. Never run the air condi-
tioner without the return air filters in place as this may plug the evaporator core
with dirt and substantially affect the performance of the air conditioner.
To Clean:
• Remove the vent covers and filters.
• Wash the filters and covers in warm soapy water. Do not use solvents.
• Rinse the filters and cover thoroughly with fresh water and allow them to dry.
• Reinstall the filters and covers.
The furnace and its related components are 12 Volt DC operated, using
LP-Gas as the fuel source. Electronic circuitry (automatic ignition) is used to
ignite the burner. The furnace uses outside air for the burner combustion and
exhaust is expelled through the outside vent. Inside air is drawn into the furnace
and blown across the internal heat exchanger. Heated air is then discharged
through ducted hoses which can be run throughout the motorhome. A warm air
discharge is incorporated to heat the motorhome’s holding tanks.
The furnace operates in the following manner: The wall thermostat sends a
signal to the front roof air conditioner circuit board, which closes a relay.
Closing a relay sends an electrical signal to the furnace to begin the ignition
cycle. There is a small time delay before the blower motor begins. Once the
blower motor attains a predetermined speed it will close the air prover or sail
switch. The sail switch, which is now closed, sends the electrical signal through
a high temperature protection switch, then to the automatic ignition circuit
board. After the thermostat is satisfied, the gas valve closes and extinguishes
the burner. The blower motor stops about two or three minutes after cool down.
The furnace will operate when the following conditions have been met:
1. The LP-Gas valve on the LP tank is open and the LP-Gas valve at the
furnace is on.
2. The house batteries in the motorhome are charged.
WARNING: IF YOU SMELL GAS extinguish all open flames
and turn off the main gas supply. Liquid propane is a highly
volatile, extremely dangerous gas. It can explode or ignite,
which may result in property damage, injury or death.
Propane is “heavy” and can “float” on the floor or “hide” in
corners. Open all windows and doors. Do not touch electrical
switches. They may spark, which can ignite. Keep all open
flames, spark producing devices and smoking material out of
the area. Contact a qualified service center to have the
problem correctly diagnosed and repaired before resuming
operation.
Appliances
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WINDSOR
4•114
Operation
Return Air Filters
FURNACE
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