Manual

Troubleshootin ...
_ efore you call for service ....
Save time and money! Review the chart below first and you
may not need to call for service.
Possible Causes What To Do
Water heater makes A fan is used to move air • Some amount of fan sound is normal. Ifyou hear on
sounds through the system, abnormal sound or the sound level seems unusually loud,
then contact service.
Water heater is Room is not vented • If the room is smaller than !0'x !0'x 7' (3m x 3m x 2.1m),
making the room properly or is too small, then it must have a Iouvered door or other means to allow
cooler air exchange with surrounding rooms.
Heat is removed from the air • This is normal
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 no hot Water temperature may • SeeAbout the Water Temperature Setting section.
water be 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 • Wait for the water heater to recover after an abnormal
exceeded the capacity demand
of the water heater
Ambient temperature is • For the water heater to work properly, its location needs
too low to have a temperature of 32° to !50°F for Standard
Electric mode and 45° to !20°F for all other modes.
Cold water inlet temperature • This is normal. The colder inlet water takes longer to heat.
may be colder during the
winter months.
Leaking or open hot water • Hake sure all faucets are closed.
faucets.
Long runs of exposed pipe, • Insulate piping.
or hot water piping on
outside wall.
Not enough clearance to • Hake sure unit is 7" away from the wall.
allow air to circulate for the
heater pump.
Room size is not appropriate • If room size is less than !0'x !0'x 7' (700 cu. ft.), install
for water heater. Iouvered door or similar ventilation.
A fuse is blown or a circuit • Replace fuse or reset circuit breaker.
breaker tripped.
Electric service to your home • Contact the local electric utility.
may be interrupted.
Improper wiring. • Seethe Installation Instructions section.
Manual reset limit (TCO). • Seethe 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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