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Y8150 FRESH AIR VENTILATION SYSTEM, W8150 FRESH AIR VENTILATION CONTROL
68-0282—07 8
CHECKOUT
In this section, make sure the ventilation system is operating
correctly.
1. On thermostat, set Fan switch to Auto and System
switch to Off.
2. Set any remote switches throughout the house in the
Off position.
3. On the W8150, set the control switch to Off (remote
only).
4. Press Test button for two seconds to enter test mode:
• A light on the control begins flashing.
• The HVAC system fan comes on.
• The damper moves to the Open position.
5. Press the Test button again to exit test mode:
• No lights on the control are on.
• The HVAC system fan turns off.
• The damper returns to the closed position.
6. Return the thermostat, ventilation control, and remote
switches to the original settings.
7. Refer to Troubleshooting section, if needed.
TIP:
• W8150 Ventilation Control automatically exits test mode
after three minutes.
TROUBLESHOOTING
Problem Possible cause What to do
Flashing red light
during test mode
(The current settings
do not meet the
selected ventilation
requirement)
Not enough airflow • Measure airflow and check dial setting.
• See Problem: Not enough airflow.
Ventilation on-time limit
setting
• If the device is set to 60%: Set the ventilation control to 100% maximum
on time. This allows the HVAC fan to run up to 100% of the time. It may be
preferable to increase airflow.
• If the device is set to 100%: There is not enough airflow through the
fresh air duct.
• Ventilation continues to occur according to the settings but chosen
standard may not be met.
Flashing red light
during normal
operation
Low voltage • Check the voltage from the transformer for at least 20 Vac. If voltage is
OK, replace W8150 Control. If voltage is not OK, disconnect damper and
remote switch connections and check again. If voltage does not return to
at least 20 Vac, replace transformer.
No light on ventilation
control when switch
set to:
• On
• Override Off/
• Remote Only and a
remote switch is on.
No power to control • Verify 24 volt input to R and C terminals on ventilation control.
• Check wiring connections per appropriate system diagram and replace
transformer, if necessary.
Device malfunction • Cycle power off to control for ten seconds and recheck. If control does not
recover, replace ventilation control.
HVAC fan does not
come on after pressing
Test button.
Wiring • Check wiring connections per appropriate system diagram.
HVAC system does not
have power
• Restore power to the HVAC system.