Troubleshooting - Venmar 41502 User's And Installer's Manual

For the Installer

11. 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 is flashing, the unit sensors detected a problem. See the table below to know the nature of the problem.
LED E
SIGNAL RROR TYPE
LED flashes Thermistor error
GREEN
LED flashes Damper error
AMBER
LED flashes • The door is open and the
RED unit is not unplugged
• Exhaust motor error
Altitude or
Platinum wall
control does not
display the outdoor
temperature
Is the unit's
integrated push-
button set to off?
integrated push-
button until the LED
indicator of the
Yes
integrated control
Are both ends of
the control's RED
wire properly
connected?
Restore proper
Yes
• Reset control: simultaneously 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 setting
• Wait 5 minutes
Is temperature now displaying?
Change the wall
No
A
CTION
Replace the entire motorized damper port assembly
(fresh air from outdoors port)
Go to page 17
• Put a magnet over the door switch or close the door and press
once on the integrated control push button to reset the unit.
• Go to page 18
Wall control does
not work
Is the power outlet
energized?
Yes
No
Push on the
turns OFF
No
connection
Yes
Problem solved
control
Refer to an
No
electrician
• Unplug auxiliary controls
• Uplug unit
• Wait 1 minute
• Plug unit back
• Wait 30 seconds – Unit performs booting sequence: LED lights up, you
hear the relays, you see the dampers move
• Once booting sequence is over (after 30 sec.), try operating the unit
using the integrated push-button.
When hitting the integrated push-button multiple times, does the LED go
from OFF to AMBER to GREEN and back to OFF?
Yes
Are the wall control
wires properly
connected? Pay
special attention to
the BLACK and
YELLOW wires.
Restore connections
Yes
Use a voltmeter. Is
Yes, but
there 8-12 VDC
problem not
between BLACK and
solved.
YELLOW?
No
Test the wall control
using a new wire.
Does the wall
control now work?
16
U
NIT STATUS
Unit works but will
defrost frequently
Unit does not work
Unit does not work
The problem is not
the wall control.
No Proceed to
appropriate
troubleshooting.
No
Change the wall
control.
Change the wall
No
control.
Yes Change the wire.