Honeywell PERFECT WINDOW HR200 - Manual (Page 21)

APPENDICES
Symptom Cause Solution
Humidity
levels are
too high;
condensation
appears on
windows Dehumidistat is set too high. Set dehumidistat lower.
Undersized ventilator to handle hot tub, indoor •
pool, etc.
Cover pools and hot tubs when not in use. •
Lifestyle of occupants. • Avoid hanging clothes to dry, storing wood and •
venting clothes dryer inside. Consider moving
wood outside.
Moisture coming into home from crawl space •
not vented or heated.
Vent crawl space and place vapor barrier on •
floor of crawl space.
Moisture is remaining in bathroom and kitchen •
areas.
Size bathroom ducts to remove moist air as •
effectively as possible; use bathroom fan to
remove additional moisture.
Condensation is forming in spring and fall. • On humid days, as seasons change, •
condensation appears but air quality remains
high with some ventilator use. Use a control that
provides ventilation in all seasons.
Ventilator speed is set too low. • Increase speed of ventilator. •
Ventilator airflow can be incorrectly balanced. • Have a contractor balance ventilator airflow. •
Humidity
levels too low Dehumidistat control set too low. • Set dehumidistat higher. •
Blower speed of ventilator is too high. • Decrease ventilator blower speed. •
Lifestyle of occupants. • Increase humidity with humidifiers. •
Ventilator airflow can be incorrectly balanced. • Have a contractor balance ventilator airflow. •
Ventilator and/
or ducts have
frost buildup Ventilator airflow is incorrectly balanced. • NOTE: Minimal frost build-up is expected on •
cores before unit initiates defrost cycle functions.
Have HVAC contractor balance ventilator.
•
Malfunction of ventilator defrost system. • Have HVAC contractor check defrost system. •
Condensation
or ice buildup
in insulated
duct to
outside Incomplete vapor barrier around insulated duct. • Tape and seal all joints. •
Tape any hole or tears made in outer duct •
covering.
Hole or tear in outer duct covering. • Ensure vapor barrier is completely sealed. •
Water in
ventilator
bottom Drain pans are plugged. •
Improper connection of ventilator drain lines. •
Ensure O-ring on drain nozzle adjusted correctly. •
Look for kinks in line. •
Ventilator is not level. • Level ventilator. •
Drain lines are obstructed. • Check water drain connections. •
Ventilator heat exchange not correctly installed. • Make sure water drains correctly from pan. •
HR150, 200; ER150, 200 Perfect Window™ Fresh Air Ventilation Systems 68-0171—12 19