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23
For the Installer
Invert J4 and J5
motor connec�ons.
Does the supply
motor now work?
No
Restore original
motor connec�ons
and replace the
supply motor.
Yes
Restore original
motor connec�ons.
Invert the J6 and J7
capacitors
connec�ons. Does
the supply motor
now work?
Yes
Restore original
capacitor
connec�ons and
replace the supply
motor capacitor.
Replace the
electronic board.
Supply motor does
not work
First, make sure that only the supply motor does not work.
Open unit’s door, and remove the core so the motors can be seen.
Place a magnet on top of the electrical compartment, where the door
magnet is when the door is closed.
Plug unit in (beware of live and moving parts). Unit performs a boo�ng
sequence.
Once the boo�ng sequence is over, use the integrated push bu�on to set
the unit in high or l
ow speed (integrated LED turns GREEN).
Look at the motors. If both motors do not work, go to « unit does not
work / Integrated control LED is OFF ». If only the supply motor does not
work, proceed as follows :
Integrated control
LED is OFF
No
Integrated
control LED is RED and
flashing slowly
Is the jumper
present on J11?
No
Call customer
service
Yes
Invert J4 and J5
motor connec�ons.
Does the exhaust
motor now work?
No
Restore original
motor connec�ons
and replace the
exhaust motor.
Yes
Restore original
motor connec�ons.
Invert the J6 and J7
capacitors
connec�ons. Does
the exhaust motor
now work?
Yes
Restore original
capacitor
connec�ons and
replace the exhaust
motor capacitor.
No
Use a voltmeter.
Is there 120VAC
between J9-1 and
J9-4?
No
Replace the
electronic board.
Yes
Use a voltmeter.
Is there 68VAC
between J9-3 and
J9-4?
No
Replace the
transformer.
Yes
Replace the
electronic board.
S10 ERV 70E ERV
S10 ERV-R 70E ERV-R
S10 ERVplus 70E+
S10 ERV 70E ERV
S10 ERV-R 70E ERV-R
S10 ERVplus 70E+
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