Unit; Troubleshooting - Broan ERV200 ECM Guia De Instalacion

8. TROUBLESHOOTING

If the unit does not work properly, reset the unit by unplugging and then replug it. If it is still not working properly, refer to the
table below.
If the LED of the unit is flashing, this means the unit sensors have detected a problem. See the table below to know where the problem
occurs on the unit.
LED E
SIGNAL RROR CODE ON
ON UNIT CONTROL SCREEN
LED flashes E21
GREEN
(double blink
every
2 seconds).
LED flashes E22
GREEN
(2 blinks per
second; faster
blink).
LED flashes E23
AMBER.
E25 and E26
alternately
LED flashes
RED
(one blink
every
2 seconds).
E25
E26
LED flashes
RED
(2 blinks per
second; faster
blink).
E A
RROR TYPE CTION
Cold side thermistor • Ensure J12 connector is properly connected
error. and its wires are not damaged. If they are
correct:
• Replace the damper system assembly.
Warm side • Ensure J20 connector is properly connected
thermistor error. and its wires are not damaged. If they are
correct:
• Replace the warm side thermistor.
Damper system • Go to point 6 in next table.
error.
Open door while the • Reset the VT9W wall control by pressing on
unit is in function or MODE and %HUM keys for 10 seconds.
magnetic switch bad • Check if the unit door is properly closed and for
contact. the door magnet to be properly seated onto the
door. If not, correct the situation, close the door
and reset the VT9W wall control by pressing
on MODE and %HUM keys for 10 seconds.
• Ensure J11 connector is properly connected
and its wires are not damaged. If not, correct the
situation, close the door and reset the VT9W
wall control by pressing on MODE and %HUM
keys for 10 seconds.
• Using a flat blade screwdriver, jump J11, reset
the VT9W wall control by pressing on MODE
and %HUM keys for 10 seconds and set the
unit on CONT.
If the LED is still flashing, go to point 8 in next
table for motor diagnosis.
Cold side motor • Go to point 8 in next table.
error.
Warm side motor • Go to point 8 in next table.
error.
Unit is on protection • If outside temperature is colder than -25°C, it
mode. could be normal for the unit to enter in
protection mode. There is no action to be taken.
• If the snowflake icon appears frequently, the
airflows of the unit may be not balanced or the
damper system may be damaged. See point 7
in next table.
25
U
NIT STATUS
Unit works but will
defrost frequently.
Unit does not work.
Unit does not work.
Unit does not work.
Unit perform a special
defrost and go back to
its previous mode when
completed.