Service And Troubleshooting - Honeywell Perfect Window ER200 Instruction Manual

ER200 PERFECT WINDOW
As the cooler air stream passes through the porous wheel, it
picks up heat from an increasingly warmer surface. The
rotation takes that same surface into the opposing air stream
where the warmer air gradually gives up heat to the
increasingly cooler surface of the film. The rotation is
constantly regenerating the temperature gradient for
maximum efficiency.
The desiccant energy recovery wheel also removes moisture
during the rotation. In summer, the wheel strips moisture from
the incoming warm humid air stream. The moisture is then
transferred into the cooler, dryer exhaust air. In winter,
moisture in the exhaust air stream is transferred to the
incoming dry fresh air stream. This eliminates the need for a
condensation drain or pan.

SERVICE AND TROUBLESHOOTING

Service
Frost Control System
Test the frost control system by pressing the test button
annually before the heating season starts.
CAUTION
Press the test button only momentarily—do not hold
down more than two seconds. Longer testing can melt
the fusible link in the over-temperature safety circuit. If
this occurs, it will be necessary to replace the heater
assembly.
Fresh Air Filter
Replace the fresh air filter at least twice a year. To remove
the filter:
Unscrew the access panel thumbscrews to remove the
filter access panel.
Slide the fresh air filter out of the Fresh Air Ventilation
System.
Check the filter and replace if clogged.
Replace the filter access panel on the Fresh Air
Ventilation System and tighten the thumbscrews.
Weather Caps
Check to ensure that the fresh air inlet and exhaust grilles do
not become clogged with debris like grass, leaves or snow.
68-0131—2
™
FRESH AIR VENTILATION SYSTEM
Energy Transfer Wheel
Check the energy transfer wheel for build-up of dirt and
debris.
NOTE: Energy transfer is not affected by stained surfaces.
Remove and Clean the Energy Transfer Wheel
Unscrew the screws holding the ventilator door and
open the door.
Take out the center divider.
Remove the belt from the rim of the wheel.
Unscrew the screw in the center of the hub.
Use the rim of the wheel and lift the wheel straight off
the drive shaft.
Spray the energy transfer wheel thoroughly with
household spray cleaner (Fantastik® or equivalent).
Rinse with warm water. Use a soft brush to remove
stains between the plastic windings. Shake excess
water from the wheel.
Replace the wheel on the drive shaft.
Replace and tighten the screw in the center of the hub.
Place the belt back on the wheel.
Reinstall the center divider.
Close the ventilator door and tighten the screws.
Belt Drive
If the blower is operating (air coming out of fresh air vent) but
energy transfer wheel does not rotate, check the pulley
system. Replace broken or stretched belts.
If the blower fails to operate with the master switch in the ON
position and the Fresh Air Control on, check circuit breakers
in house electrical panel. If power is supplied to the unit but
the blower does not operate, contact your local HVAC
contractor.
Troubleshooting
All required maintenance and repair can be accomplished by
HVAC service personnel or appliance repair persons.
Use Fig. 12 and 13 to identify the problems and causes. Start
at Level 1 in Fig. 12 and proceed vertically downward through
each level. If a negative response is obtained, proceed
through the steps in that level as directed until the fault is
found and is corrected. Continue until completed. This
systematic diagnosis will provide a thorough inspection and
checkout of the Fresh Air Ventilation System, both electrically
and mechanically.
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