A.O. Smith Vortex HPTU-50 Installation Instructions And Use & Care Manual page 32

MAINTENANCE
• 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" on
page 25.
Air Filter Maintenance
The heater will monitor the heat pump
opera on status and indicate whether
the fi lter should be cleaned. If the
User Interface Module displays "SF"
code, this indicates the fi lter should be
cleaned or replaced with the following
process (See exploded view of unit on
last page for air fi lter loca on).
NOTE: Before a emp ng to clean or
replace the air fi lter, turn off power to
the water heater at the circuit breaker/
fuse box.
Take the two tabs on the air
1
fi lter and remove (slide) it
from the top cover of the unit.
If you are replacing the fi lter,
2
skip to step four. To clean the
fi lter, use a vacuum with a
hose a achment to remove any dust
or debris.
Place the new or cleaned fi lter
3
into the water heater.
Restore power to the water
4
heater and turn the water
heater on.
NOTE: The water heater may conduct a
system diagnos c prior to opera on.
32 • Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
Condensate Drain
Maintenance
NOTE: Before a emp ng 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 diagnos c prior to opera on.