Lifebreath 350 DGS, Инструкция по эксплуатации

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18 T
ROUBLESHOOTING
Table 17.1 – Troubleshooting Procedures (cont.)
SYMPTOM CAUSE SOLUTION
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 through the
use of humidifiers
•
Have contractor balance HRV airflows
HRV and/or ducts frosting
up • HRV airflows are improperly
balanced
• Malfunction of the HRV defrost
system
Note
•
Minimal frost build-up is expected on
cores before unit initiates defrost cycle
functions
• Have HVAC contractor balance the HRV
• Ensure damper defrost is operating during
self-test
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 cover, ensure that the vapor varrier is
comletely sealed.
Excess water in the
bottom of the HRV • Drain pans plugged
• Improper connection of 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