aldes H/E240 - Troubleshooting

Residential HRV/ERV
39
TROUBLESHOOTING
Symptom Possible Causes Solution
HRV does
not power up
(indicator light
on the unit is
not lit up)
• Unit is not plugged in
• No power to outlet
• Defecve fuse
• HRV control board
may be defecve
• Make sure unit is plugged in
• Test outlet with another
device
HRV is not
responding to a
wall control
• Wall control is set to
OFF.
• Terminal block is
loose.
• Bad low voltage
connecon or
interrupon (due to
a nail in the wall, for
example).
• Ensure that the wall control
has power (screen or LED
lights illuminate).
• Check wiring from HRV to
wall control for open/short
circuit.
• Ensure that the terminal
block is well seated in the
HRV
The HRV is
producing
excessive
vibrations
• Dirt on the fan wheels
• Malfunconing motor
• Call contractor to perform
HRV servicing
Poor airows
• Hoods or grilles are
obstructed
• The HRV lters are
clogged
• Obstrucon in the
heat-recovery core
• Poor power supply
• Ductwork is restricng
airow to/from HRV
• Speed is set to Low
• HRV is not balanced.
• Ensure that the outdoor
exhaust and intake hoods
are free of obstrucons
• Clean or replace the lters
• Clean the heat-recovery
core
• Use wall control to increase
the speed of the HRV
• Call your contractor to
check supply voltage and/or
balance the HRV airows.