GE GP94DNSRSA - Manual (Page 8)

Operating Instructions
Safety Instructions
Consumer S
uppor
t
Tr
oubleshooting Tips
8
Snow Accumulation
Keep the area around the air intake and
flue terminal free of snow and ice. The
appliance will not function properly if the
intake air or exhaust is impeded (blocked
or partially blocked) by obstructions.
Care and cleaning of the water heater.
Winterizing Unit
For cabins, lake homes or any installation
where the unit may be unattended for long
periods of time, the freeze protection built
into the unit will prevent the system from
freezing down to –30°F if electric power
and gas are available. However, if the unit
is to be left unattended for long periods of
time in winter months, it is recommended
to unplug and drain the unit. This will
prevent damage to the unit from freezing
weather and loss of power or gas.
The system can be drained by
the following steps:
Turn off and disconnect electrical
power. Allow water heater to cool.
Shut off water inlet.
Open hot water tap at nearest faucet
to relieve system pressure.
Close outlet valve on unit.
Have a small pan or bucket ready to
catch spilled water.
Remove the water inlet filter and outlet
bleed screw.
Allow the water to completely drain
from the system. Replace the inlet filter
and bleed screw.
To start the system:
Open the inlet water valve and check
for leaks.
Open the outlet water valve.
Plug in or turn on power to the unit.
Open the faucet and check for proper
operation.
When reinstalling the hot water bleed
screw, fully secure it with a wrench.
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3
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1
7
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1
Lime/Scale Buildup
WARNING:
Before
performing this action, first remove power
to the water heater in order to prevent an
accidental scald injury.
If you are in a hard water area or do not
have a water softener, the system should
be flushed annually or as necessary for
lime scale buildup. See page 11.
If you receive Error Code “LC,” refer to the
procedure Flushing the Heat Exchanger.
Refer to the section on Water Quality to
see if your water needs to be treated or
conditioned.
Visual Inspection of Flame
The burner must flame evenly over the
entire surface when operating correctly.
The flame must burn with a clear, blue,
stable flame. See the parts breakdown of
the burner for location of the view ports.
The flame pattern should be as shown in
the figures to the left.
CAUTION:
A qualified service
technician should be used to perform
this check. A sight glass is located on
the burner manifold after the front cover
is removed.
SATISFACTORY
Blue flame Flame
rod
FRONT VIEW
UNSATISFACTORY
Yellow flame
Flame
rod
FRONT VIEW
Bleed screw