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36 • Residenal Electric Water Heater Use and Care Guide
MAINTENANCE
MAINTENANCE
5
Mark the wires with tape so
you will know how to put
them back on.
6
Disconnect the wires from
the bad ECO and remove the
ECO from the metal
mounng clip.
7
Install the new ECO in the
metal mounng clip.
8
Make sure the new ECO ts
snuggly against the tank. You
should NOT be able to slip a
business card between the ECO and
the tank. If you can, bend the ECO
mounng clip unl the ECO ts ghtly
against the tank.
9
Aach the wires following
the wiring diagram on the
water heater’s label. Make
sure all wire connecons are ght.
10
Replace the plasc element/
ECO cover, insulaon, and
access panel.
11
Replace the cover on the
electrical juncon box.
12
Turn ON power to the water
heater at the circuit breaker/
fuse box.
T&P Relief Valve
Maintenance
Read and follow the operang and
annual maintenance instrucons
provided by the manufacturer of
the T&P Relief Valve (yellow label
aached to the T&P Relief Valve).
If no label is aached to the T&P
Relief Valve, follow the instrucons
in this secon. Minerals in the
water can form deposits that cause
the valve to sck or create blocked
passages, making the T&P Relief Valve
inoperave. Follow these guidelines:
• At least annually, operate the T&P
Relief Valve manually to ensure the
waterways are clear and the valve
mechanism moves freely. Before
operang the valve manually, check
that it will discharge in a place for
secure disposal. If the water does
not ow freely from the end of the
discharge pipe, turn OFF the power
to the water heater. Call a qualied
person to determine the cause.
WARNING! Hot water will be
released. Before operang the T&P
Relief Valve manually, check that it
will discharge in a safe place. If water
does not ow freely from the end of
the discharge pipe, turn the power to
the water heater OFF. Call a qualied
person to determine the cause.
Figure 49 - T&P Relief Valve.
• At least every ve years, have a
qualied person inspect the T&P
Relief Valve and discharge pipe.
Damage caused by corrosive water
condions, mineral deposits,
or other problems can only be
determined when a qualied person
removes and inspects the valve and
its components.
• Note that a dripping T&P Relief Valve
is usually caused by the home’s
water pressure being too high or
the lack of a Thermal Expansion
Tank. If your T&P Relief Valve drips,
see “Drips from T&P Relief Valve
Discharge Pipe” on page 29.
Air Filter Maintenance
The heater will monitor the heat
pump operaon status and indicate
whether the lter should be cleaned.
If the Control Assembly displays the
code 080, this indicates the lter
should be cleaned or replaced with
the following process (see exploded
view of the unit on page 39 for air
lter locaon).
NOTICE: Before aempng to clean
or replace the air lter, turn OFF the
power to the water heater at the
circuit breaker/fuse box.
1
Take the tab on the air lter
and remove (slide) it from
the top facing air intake duct
adaptor.
2
To clean the lter, use a
vacuum with a hose
aachment to remove any
dust or debris.
3
Slide the new or cleaned
lter into the air intake duct
adaptor.
4
Turn ON power to the water
heater at the circuit breaker/
fuse box.
NOTICE: The water heater may
conduct a system diagnosc prior to
operaon.
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