Troubleshooting - Venmar HRV CONSTRUCTO 1.5ES Guide D'installation Et D'utilisation

For the Installer

12. TROUBLESHOOTING

If the integrated LED of the unit is flashing, the unit sensors detected a problem. See the table below to know more about the nature of
the problem.
LED Signal
LED flashes GREEN (double blink)
LED flashes AMBER
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.
Al tude or
Pla num wall
control does not
display the outdoor
temperature
Is the unit's
integrated push-
bu on set to off?
Push on the
integrated push-
bu on un l the LED
Yes
indicator of the
integrated control
Are both ends of
the control's RED
wire properly
connected?
Restore proper
Yes
connec on
• Reset control:
simultaneously
Problem solved
press and hold
both arrow keys
for 8 seconds
• Unplug unit
• Wait 1 minute
• Plug unit back
• Using the wall
control, put unit in
VENT mode at
MIN or MAX
se ng
• Wait 5 minutes
Is temperature now
displaying?
No
Change the wall
control
VM0008A
Thermistor error
Damper error
No
turns OFF
No
Push-bu on
mer does not work
Yes
At unit, jump OL
and OC on the
No GREEN connector.
Does unit now
Change the
electronic board.
Wire or control is
Error Type
⚠
WARNING
Wall control does
not work
Is the power outlet
energized?
• Unplug auxiliary controls
• Uplug unit
Yes
• Wait 1 minute
• Plug unit back
• Wait 30 seconds – Unit performs boo ng sequence: LED lights up, you
hear the relays, you see the dampers move
• Once boo ng sequence is over (a er 30 sec.), try opera ng the unit
using the integrated push-bu on.
When hi ng the integrated push -bu on mul ple mes, does the LED go
from OFF to AMBER to GREEN and back to OFF?
Are the wall control
wires properly
connected? Pay
special a en on to
the BLACK and
YELLOW wires.
(no light)
Use a voltmeter. Is
there 8-12 VDC
between BLACK and
YELLOW?
work?
Yes
Test the wall control
using a new wire.
Does the wall
defec ve.
control now work?
17
Action
Replace the thermistor kit.
Go to page 18 "Unit does dot work".
Refer to an
No
electrician
Yes
No
Yes Restore connec ons
Yes, but
problem not
solved.
No No
Yes
No
The problem is not
the wall control.
Proceed to
appropriate
troubleshoo ng.
Change the wall
control.
Change the wall
control.
Change the wire.