Grand Design Imagine, Owner'S Manual

Page: 151 / 180

149
Basic Troubleshooting
air pressure through the relief valve support flange. In
either case, with the drain valve open, the air pressure
will force the remaining water out of the tank. If air
pressure is unavailable, you may flush your tank with
fresh water. Fresh water should be pumped into the
tank with the assistance of the on board water pump or
with the assistance of external water pressure. Once
again, external pressure may be pumped into the unit
either through the inlet or outlet found on the rear of
the water tank, or using the relief valve in- let located
on the front of the unit.
5. Continue this flushing process for approximately five
(5) minutes allowing ample time for the fresh water to
agitate the stagnant water on the bottom of the tank
and force the deposits through the drain opening.
Upon completion of the steps above, close the drain plug as
well as the relief valve. Refill with fresh water, circulate and
rinse.
If you use your vehicle frequently or for long periods of time,
flushing the water heater several times a year will prolong the
life of the water heater storage tank.
Water heater will not fire up
• Check for obstructions in burner tube and exhaust.
• Check 12 Volt power for possible blown fuse.
• Bad circuit board. See your dealer.
WATER PUMP
Pump will not start
• Check that house battery disconnect switch is on.
• Check pump switch at monitor panel.
• Check fuse in power center.
• Check to see if water is frozen.
Will not prime, sputters (no discharge, but the motor runs)
• Check to see if there is water in the tank, or if air col-
lected in the hot water heater.
• Check for frozen water lines or water tank.