Troubleshooting - Venmar 41502 Installation Manual

9.

TROUBLESHOOTING

If the unit does not work properly, reset the unit by unplugging it for one minute and then replug it. If it still not working properly,
refer to table below.
If the integrated control LED of the unit is flashing, this means the unit sensors detected a problem. See the table below to know where
the problem occurs on the unit.
LED E
SIGNAL
LED flashes GREEN Thermistor error
LED flashes AMBER Damper error
LED flashes RED • The door is open and
• Exhaust motor error
P
ROBLEMS
The error code E1 is
displayed on Altitude or
1 Deco-Touch wall control
screen.
There is no outdoor
temperature displayed
__
on Altitude wall control
screen .
2
Altitude or Deco-Touch
wall control screen
3
alternates between
normal display and E3.
Unit does not work.
4
The damper actuator
does not work.
5
The wall control does not
work.
6
RROR TYPE
the unit is not unplugged
P
OSSIBLE CAUSES
• The wires may be in reverse position.
• The wires may be broken.
• The wires may have a bad
connection.
• The unit thermistor is defective (the
integrated control LED of the unit
must flash GREEN).
• The Altitude or Deco-Touch wall
control may be defective.
• The circuit board may be defective.
• The fuse may be defective.
• The damper actuator
integrated damper mechanism may
be defective.
• The circuit board may be defective.
• The wires may be in reverse position.
• The wires may be broken.
• The wire in the wall OR
the wall control may be defective.
A
CTION
Replace the entire port assembly
(fresh air from outdoors port)
Go to point 5
• Close the door and press once on the
integrated control push button to reset the unit
• Go to 8 B, C, D, or E
Y
OU SOULD TRY THIS
• Ensure that the color coded wires have been connected to
their appropriate places.
• Inspect every wire and replace any that is damaged.
• Ensure the wires are correctly connected.
NOTE: At its very start-up or after a power failure, it takes
some minutes before the outdoor temperature appears
on screen. The delay duration depends on which
operation mode the wall control is set. The shortest
delay is obtained when the wall control is set on MIN
or MAX in VENT Mode.
• Replace the unit thermistor.
• Replace the Altitude or Deco-Touch wall control.
• Unplug the unit. Disconnect
the main control and the
auxiliary control(s) (if need
be). Jump G and B terminals.
Plug the unit back and wait about 10 seconds. If the motors
run on high speed and the damper opens, the circuit board
is not defective.
• Check if fuse F1 (located on the PCB) is blown. In that case,
replace fuse F1 as per product nameplate.
or the • Unplug the unit. Disconnect the main control and the
auxiliary control(s) (if need be). Wait 10 seconds and plug
the unit back. Check if the damper opens. If not, use a
multimeter and check for 24 VAC on J12-1 and J12-2 (on
circuit board). If there is 24 VAC, replace the entire damper
assembly.
NOTE: It is normal to experience a small delay (7-8 seconds)
before detecting the 24 VAC signal at starting-up.
This signal will stay during 17-18 seconds before
disappearing.
• If there is no 24 VAC, replace the circuit board.
• Ensure that the color coded wires have been connected to
their appropriate places.
• Inspect every wire and replace any that are damaged.
• Remove the wall control and test it right beside the unit
using another shorter wire. If the wall control works there,
change the wire. If it does not, change the wall control.
17
U
NIT STATUS
Unit works but will defrost
frequently
Unit does not work
Unit does not work
NO C NC I OC OL Y R G B
VE0097