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Problem
Possible Causes
What To do
Water heater makes
A fan is used to move air
. Some amount of fan sound is normal. If you hear an abnormal
sounds
through the system
sound or the sound level seems unusually loud, then contact service.
Water heater is making
Room is not vented properly
. If the room is smaller than !0' x !0' x 7' (3m x 3m x 2.1m) then it
the room cooler
or is too small
must have a Iouvered door or other means to allow air exchange
with surrounding rooms.
Heat is removed from the
. This is normal.
air to heat the water
Water dripping down
Condensate drain is
. Clear out any debris in the drain port on the unit.
the outside of the
clogged
heater
Hot/Cold water connections . Tighten the inlet and outlet pipe connections.
are not tightened
Not enough or not hot
Water temperature
may be
. See About the Water Temperature Setting section.
water
set too low
Hot water usage pattern
, Change to different mode.
exceeds the capability of the
water heater in current mode
Water usage may have ex-
, Wait for the water heater to recover after an abnormal
demand.
ceeded the capacity
of the
water heater
Ambient temperature
is too
, For the water heater to work properly, its location needs to have
low
at temperature
of 32 ° to !50°F for Standard Electric mode and 45 °
to 120 ° for all other modes.
Cold water inlet tempera-
, This is normal. The colder inlet water takes longer to heat.
ture may be colder during
the winter months
Leaking or open hot water
, Hake sure all faucets
are closed.
faucets
Long runs ofe×posed
pipe,
, Insulate piping.
or hot water piping on out-
side wall
Not enough clearance to
. Hake sure unit is 7' away from the wall.
allow uirto circulate for the
heater pump
Room size is not
. If room size is less than !0' x !0' x 7' (700 cu. ft.), install Iouvered
appropriate for water
door or similar ventilation.
heater
A fuse is blown or a circuit
. Replace fuse or reset circuit breaker.
breaker tripped
Electric service to your
. Contact the local electric utility.
home may be interrupted
Improve wiring
. See the Installation Instruction section.
Manual reset limit (TCO}
. See the Safety Control section, see page/4.
Water connections to unit
. Correct piping connections.
reversed
Electric supply may be off
. Hake sure electric supply to water heater is correct disconnect
switch, if used, are in the ON position.
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