20
Problem
Possible Causes
What To do
Water is too hot
Water temperature is set
•
See
About the Water Temperature Setting
section.
too high.
CAUTION:
For your safety, DO NOT attempt repair of electrical wiring, controls,
heating elements or other safety devices. Refer repairs to qualified service personnel.
electronic control has failed.
•
Call for service.
Rumbling noise
Water conditions in your
•
Remove and clean the heating elements. This should only
home caused a buildup of
be done by a qulified service personnel.
scale or mineral deposits
on the heating elements.
Relief valve producing
Pressure buildup caused
•
This is an unacceptable condition and must be corrected.
popping sound
by thermal expansion
See Thermal Expansion Information on page 14.
or draining
to a closed system.
Do not plug the relief valve outlet.
Contact a plumbing contractor to correct this.
The heater is beeping
The water heater has not
•
Fill the tank completely with water. Apply power to unit
and the display says
been filled with water before
after the tank has been filled. Press
ENTER
to stop the
F11
powering up. Powering up the
alarm.
heater without water will
•
If the unit has been confirmed to be filled with water, and
damage the electric heaters.
an F11 code is experienced , it is possible that the code
The water heater warranty
may be a false indicator due to certain unique environment
does not cover damage or
conditions encountered during the start up. If the unit is
failure resulting from operation
full of water, turn the breaker off for about 10 minutes to allow
with an empty or partially
the water temperature to stabilize, then turn the breaker
empty tank.
back on. If the F11 code persists, schedule service.
The filter light is on.
The filter requires cleaning.
•
Follow the instructions on how to remove and clean the
A clean filter is necessary for
filter on page 11.
effective operation.
• Repeated dirty filter alarms that do not resolve by cleaning the
filter may be an indication of a fan failure. Contact service.
The heater is beeping
There is an issue with the
•
The unit will automatically switch to another available
and the screen says
heat pump system.
mode to ensure you continue to have hot water. Contact
“FA-F8”
service immediately and give them the codes listed on the
display screen.
The heater is beeping
There is an issue with the
•
The heater may switch to another available heating mode.
and the screen flashes
water heater that requires
Contact service immediately. To stop the beeping noise
an error code
immediate attention.
(unless error code F2, F11 or bAd linE) press either the UP or
down arrow button and the alarm will stop and the display
will go back to normal (set temperature).
The water heater is
Unit is not receiving 240VAC
•
Turn off power to water heater (generally at the breaker
beeping and the screen
as intend.
panel). Then read “Electrical Connections” section of
flashes, “bAd linE”
Installation Instructions, see page 16. Then, contact the
installer
to verify electrical input to the water heater.
Hot Water has a rotten
Certain water supplies with
•
The odor can be reduced or eliminated in most water
egg or sulfur smell
high sulfate content will react
heaters by replacing the anode rod with less-active
with the anode rod that is
material rod. In some cases, an added step of
present in all water heaters
chlorinating the water heater and all hot water lines may
for corrosion protection of
be necessary, contact your local water professional or
the tank.
plumber for options and instructions. A qualified servicer or
plumber should do this replacement.
Water heater displays
during commissioning, a self
•
This is normal. Wait for the water heater to complete the self
a number other than the
test countdown number will be
test and begin normal operation.
temperature setpoint
displayed indicating the time
at startup or following
remaining before the unit begins
a power loss.
normal operation.
Unit is not making
If unit is using electric
•
Check mode of unit.
normal sounds
resistance elements, it will
not make
fan or compressor
sounds.
Troubleshooting…
Summary of Contents for RE2H50R10B-1NCWT
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