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6. TROUBLE SHOOTING
Control Functions
Symptom
Possible Cause
Possible Solution
Nothing works
Front access door safety switch Ensure that HRV is plugged in
Lack of power.
Ensure that outlet in use is powered
Front access door safety switch Unlatch door, inspect safety switch
Defective component
Contact your installer
HRV front panel
On/Off switch
illuminates but
fan is not running
Mode of operation selected set
to “Auto Off”
Select a different operation mode at
HRV or remote device
Defective component.
Contact your installer
HRV status panel
flashing HIGH
Continuously
HRV internal dehumidistat set
too low.
Adjust dehumidistat RH setting to a
higher setting.
External dehumidistat set too
low.
Adjust external dehumidistat set point
higher.
Remote push button activated.
Check to see if a push button has
been activated.
Defective dehumidistat.
Contact your installer.
Defective PC board.
Contact your installer.
Operational Functions
Symptom
Possible Cause
Possible Solution
HRV is operating
but little or no air
flow is present.
Air stream blockage
Check outside weather hoods for
blockages such as snow, grass,
insects, cottonwood.
Dirty air filters or heat
exchanger Core.
Inspect and clean air filters and core.
Heat exchanger core frozen
solid.
Open HRV access door and defrost
Core. Contact your installer. Have
unit inspected for defective sensors,
check system balancing.
Defective component.
Contact your installer.
Summary of Contents for SHRV 100T
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