19
9. TROUBLESHOOTING
If the integrated control LED of the unit is flashing, this means the unit sensors detected a problem. See the list below to know where on
the unit the problem occurs.
LED flashes GREEN (double blink).
• Thermistor error.
Replace the thermistor kit.
LED flashes AMBER.
• Damper error.
Go to point 10.
WARNING
A few diagnosis procedures may require the unit to be in operation while proceeding. Open the unit door and
bypass its magnetic switch by putting the door white magnet on it. Be careful with moving and/or live parts.
!
P
ROBLEMS
P
OSSIBLE
CAUSES
Y
OU
SHOULD
TRY
THIS
1. The error code E1 is
displayed on Altitude or
Deco-Touch wall control
screen.
• The wires may be in reverse position.
• The wires may be broken.
• The wires may have a bad connection.
•
The unit is not compatible with
Altitude wall control (Constructo).
• Ensure that the color coded wires have been connected to their appropriate
places.
• Inspect every wire and replace any that are damaged.
• Ensure the wires are correctly connected.
• Refer to unit spec. sheet for control compatibility.
2.
There is no outside
temperature displayed
on Altitude wall control
screen .
• Unit is on error and integrated control
LED flashes (GREEN or AMBER).
•
The unit thermistor is defective
(integrated control LED flashes
GREEN).
NOTE: At its very start-up or after a power failure, it takes some minutes before
the outside 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.
• Check if unit is operating.
• Replace the unit thermistor.
3. Altitude or Deco-Touch
wall control screen
alternates between
normal display and E3 or
E4 appears on screen.
•
The Altitude or Deco-Touch wall
control needs to be reset.
•
The Altitude or Deco-Touch wall
control is defective.
4. On Altitude wall control,
there is an important
difference between
temperature displayed
and real temperature.
• Exterior air intake port is blocked.
•
The unit thermistor is defective
(integrated control LED flashes
GREEN).
• The unit damper has been blocked
or broken (integrated control LED
flashes AMBER and unit is OFF).
• Motor won’t turn.
• Clean the exterior air intake port.
• Replace the unit thermistor.
• Check for the proper operation of the unit damper; replace if necessary.
• Confirm that the motor is running, if not refer to point 9.
5.
Unit does not work
(no LED is lit on the
integrated control).
• The transformer may be defective.
• The circuit board may be defective.
• The unit is unplugged.
• The unit door is opened.
• A fuse is blown.
• Wrong control connections.
• Check for 24 VAC on J8-1 and J8-2.
• Plug the unit.
• Close unit door.
• Inspect fuse on circuit board (refer to wiring diagram F1 on page 16).
• Try the integrated control (see Section 4.1 on page 13).
6.
The damper actuator
does not work or rotates
continuously.
• The damper actuator or the integrated
damper port mechanism may be
defective (integrated control LED
flashes AMBER and unit is OFF).
• The circuit board or the transformer
may be defective.(integrated control
LED flashes AMBER and unit is OFF)
• Unplug the unit. Disconnect the main control and the optional controls(s) (if
need be). Wait 10 seconds and plug the unit back. Check if the damper opens.
If not, use a mulltimeter and check for 24 VAC on J12-1 and J12-2 (in electrical
compartment). If there is 24 VAC, replace the entire port 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, check for 24 VAC between J8-1 and J8-2. If there is 24 VAC
replace the circuit board, and if there is no 24 VAC, change the transformer.
NO C NC I OC OL Y R G B
VE0097
• Unplug the unit. Disconnect the main control
and the optional(s) control(s) (if need be).
Jump G and B terminals. Plug the unit back
and wait about 10 seconds. If the motor runs
on high speed and the damper opens, the
circuit board is not defective.
• Reset the Altitude or Deco-Touch wall
control by pressing simultaneously
on both keys for 8 second (as shown
at right). Then,
unplug the unit for
30 seconds. Plug the unit back.
• If the problem is not solved, replace the Altitude or Deco-Touch wall control.
B
OTH
DURING
8
SEC
.
VQ0048A
A
LTITUDE
VQ0062
D
ECO
-T
OUCH
