Comfort-Aire VFH 24 CA - Manual (Page 20)

VFH InverterFlex ® - Ceiling Cassette Heat Controller
18
Troubleshooting
WARNING:
• All service and maintenance should be carried out by an authorized servicer. Do not try to service
the unit yourself.
• If you notice a malfunction has occurred (such as abnormal noises, smoke or burning smells), turn
off the power to the unit immediately and contact an authorized servicer.
• Always disconnect power before performing any service or maintenance.
Some issues can be resolved without any maintenance to the unit, check the chart below to see if there is a
suggested solution to the problem before calling for service.
Problem Cause Solution
The unit will not operate at all.
Blown Fuse or tripped circuit
breaker.
Check the fuse or circuit breaker.
Replace the blown fuse or reset the
circuit breaker.
Power Failure Wait until the power is restored to
restart the unit. If you experience
brown out conditions, contact an
electrician or your local utility.
Remote Control batteries are low Replace the batteries. Be sure not
to mix old and new batteries, as
well as different brands/types.
Signal from remote control is not
being sent
Be sure that you are not using the
remote control too far away from
the indoor unit’s control panel.
The unit runs and then stops
immediately
Air inlets and/or outlets are
blocked
Remove any obstacles from the air
inlets/outlets
Clean the air filter, louvers, and
inlet grille.
Abnormal heating or cooling
Air inlets and/or outlets are
blocked
Remove any obstacles from the air
inlets/outlets
Clean the air filter, louvers, and
inlet grille.
Improper temperature is set Ensure that the proper mode and
temperature is set on the unit. Try
to adjust the set point temperature
on the thermostat to a better
operating temperature.
Check the fan speed Adjust the fan speed to see if that
improves the conditions.
Improper louver adjustment Try to adjust the louver position to
ensure it is open enough.
Be sure that there are no other
sources of heat/steam in the area
being cooled
Remove or turn off other
appliances producing heat or
steam.