User Guide
Table Of Contents
- 1 Controlling Your HRV
- 2 Selecting the Ventilation that is Right for You
- 3 How the Dehumidistat Works
- 4 Main Wall Controls
- 4 Main Wall Controls
- 4 Main Wall Controls
- 4 Main Wall Controls
- 4 Main Wall Controls
- 5 Timers and Repeaters
- 5 Timers and Repeaters
- 6 Maintenance Instructions
- 6 Maintenance Instructions
- 7 Troubleshooting
- 7 Troubleshooting
- 8 Limited Warranty
www.lifebreath.com 17
7 TROUBLESHOOTING
Refer to the following table for troubleshooting your HRV unit.
Table 5.1 – Troubleshooting Procedures (cont.)
SYMPTOM
CAUSE
SOLUTION
Humidity levels are too
high condensation is
appearing on the
windows
• Dehumidistat is set too high
• HRV is not sized to handle a hot tub,
indoor pool etc.
• Lifestyle of the occupants
• Moisture coming into the home from
an unvented or unheated crawl
space
• Moisture is remaining in the wash
room and kitchen areas
• Condensation seems to form in the
spring and fall
• HRV is set at too low a speed
• Set Dehumidistat lower
• Cover pools, hot tubs when they are not in
use
• Avoid hanging clothes to dry, storing wood
and venting clothes dryer inside. Firewood
may have to be moved outside
• Vent crawl space and place a vapor barrier on
the floor of the crawl space
• Ducts from the washroom should be sized to
remove moist air as effectively as possible,
use of a bathroom fan for short periods will
remove additional moisture.
• On humid days, as the seasons change, some
condensation may appear, but the homes air
quality will remain high with some HRV use
Humidity levels are too
low
• Dehumidistat control set too low
• Blower speed of HRV is too high
• Lifestyle of occupants
• HRV airflows may be improperly
balanced
• Set Dehumidistat higher
• Decrease HRV blower speed
• Humidity may have to be added using
humidifiers
• Have contractor balance HRV airflows
HRV and/or ducts
frosting up
• HRV airflows are improperly
balanced
• Malfunction of the HRV defrost
system
• Have HVAC contractor balance the HRV
• Ensure damper defrost is operating during
self-test.
Note
•
Minimal frost build-up is expected
on cores before unit initiates
defrost cycle functions
Condensation or ice
buildup in insulated
duct to the outside
•
Incomplete vapor barrier around
insulated duct
• A hole or tear in outer duct covering
•
Tape and seal all joints
• Tape any holes or tears made in the outer
duct covering
• Ensure that the vapor barrier is completely
sealed
Excess water in the
bottom of the HRV
• Drain pans plugged
• Improper connection HRV’s drain
lines
• HRV is not level
• Drain lines are obstructed
• HRV heat exchange core is not
properly installed
• Look for obstructions in the drain line
• Look for kinks in the drain line
Excessive Vibration
•
Dirt on fan wheels
•
Have contractor service HRV