Air Filter Maintenance; Condensate Drain Maintenance - A.O. Smith ProLine XE Installation Instructions And Use & Care Manual

MAINTENANCE
• At least every five years, have a
qualified person inspect the T&P
Relief Valve and discharge pipe.
Damage caused by corrosive water
conditions, mineral deposits, or
other problems can only be deter-
mined when a qualified 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 refer to "Drips from T&P
Relief Valve Discharge Pipe" section
on page 23.

Air Filter Maintenance

The heater will monitor the heat pump
operation status and indicate whether
the filter should be cleaned. If the
User Interface Module displays "SF"
code, this indicates the filter should be
cleaned or replaced with the following
process (See exploded view of unit on
page 31 for air filter location).
NOTE: Before attempting to clean or
replace the air filter, turn off power to
the water heater at the circuit breaker/
fuse box.
Take the two tabs on the air
1
filter and remove (slide) it
from the top cover of the unit.
If you are replacing the filter,
2
skip to step four. To clean the
filter, use a vacuum with a
hose attachment to remove any dust
or debris.
Place the new or cleaned filter
3
into the water heater.
Restore power to the water
4
heater and turn the water
heater on.
30 • Residential Hybrid Electric Heat Pump Water Heater Use and Care Guide
NOTE: The water heater may conduct a
system diagnostic prior to operation.
Condensate Drain
Maintenance
NOTE: Before attempting to clean the
condensate drain pan or lines shut
off power to the water heater at the
circuit breaker/fuse box.
Remove the top shroud by
1
loosening the screws securing
it to the unit.
Check the condensate drain
2
pan and drain lines for any dirt
or debris that might interfere
with proper drainage. Wipe out any
dirt or debris with a damp cloth.
Once the condensate drain
3
pan and lines have been
inspected/cleaned, secure the
shroud back to the top of the water
heater.
Restore power to the water
4
heater and turn the water
heater on.
NOTE: The water heater will conduct a
system diagnostic prior to operation.