8-7
SECTION 8
APPLIANCES & INTERIOR FEATURES
2. If “W.H. Pilot” light stays on longer than 15
seconds, place switch in “Off” position and
wait 5 minutes.
3. Repeat step one.
4. If heater fails to operate due to high water
temperature, the heater will go into a lockout
condition (“W.H. Pilot” light on). When
water cools, reset by placing switch in “Off”
position for at least 30 seconds, then return
to “On” position.
5. If a lockout condition persists: contact your
dealer, an Atwood Service Station or
Atwood Service Department (Phone: 815-
877-5700).
6. For complete shut-down before servicing:
a) Place Water Heater switch in “Off” posi-
tion.
b) Remove red wire from left-hand terminal
of ECO switch (ECO to valve).
Water Heater Switch and
“W.H. Pilot” Indicator
Be sure the water heater is filled with water
before pressing this switch. To fill the water heat-
er, turn the water pump switch on and open a hot
water faucet until water begins to flow.
The “W.H. Pilot” light will glow for about 10-
15 seconds after the water heater switch is turned
on, then it will go off.
If the “W.H. Pilot” light comes on during nor-
mal operation, it means that the burner has gone
into “lockout” mode. Turn the switch off for
about 5 minutes, then turn back on.
Pressure-Temperature Relief Valve
On occasion, water may be seen seeping from
the water heater pressure temperature relief
valve. This is no cause for repair or replacement
of the valve.
Normally there is an air gap at the top of the
water heater tank which acts as a pressure buffer.
In time, however, heated water may expand and
fill this air gap, causing a slight increase in water
pressure. This may cause the P-T valve to “weep”
until the air gap is manually replaced.
OPERATE THIS VALVE ONLY WHEN
THE WATER HEATER AND ENGINE COOL-
ING* SYSTEM ARE COLD!
To Replace the Air Gap:
1. Turn off the water heater switch and incom-
ing water supply (city water and/or demand
pump).
2. Open a faucet in the motor home to relieve
water pressure.
3. Pull the handle of the P-T valve straight out
and allow water to flow until it stops.
Water Heater Exterior Service Access
Open
Lift handle straight out to open P-T valve
