Heat Pumpsare Differentin The Way They Operate; Troubleshooting Tips - Friedrich Twintemp YQ07 Operating Manual

Heat pumpsare differentin the way they operate
If your unit is a "Y", or heat pump model, there are some
things that you will want to be aware of.
Some functions of a heat pump differ from your unit when
it is used for cooling:
1. It is normal for ice to form on the outdoor coil of the
heat pump. Moisture in the outside air, passing over
the coil when very cold, will form ice.
.
If the outdoor coil temperature drops below 20°F (-
7°C), your heat pump will automatically turn on the
electric resistance heat. When the temperature rises
to 40°F (4°C), the compressor will resume the heat
pump operation. If your unit is a 115 volt model (YS09
or YQ07), it is designed for use in warmer climates
and has no electrical heat feature, and will not provide
adequate heat below 37°F(3°C).
Troubleshooting t ips
Won't cool?
If your air conditioner operates, but won't cool; check to see
if the controls are properly set. Check the filter and clean
thoroughly if needed.
Won't run?
Make sure the power cord is plugged in all the way. Check
for a bad fuse or a tripped breaker. This guide shows the
proper fuse size on page 3.
This is a warm weather appliance
Your air conditioner is designed to cool in warm weather
when the outside temperature is above 60°F (16°C), so it
won't cool a room if it is already cool outside.
Condensation isnormal
Air conditioners actually pump heat and humidity from
your room to the outside air. Humidity becomes water,
and your air conditioner will use most of the water to keep
the outside coil cool. If there is excessive humidity, there
may be excess water that will drip outside. This is normal
operation.
Frosting
This usually occurs because of insufficient airflow across
the coils, a dirty filter, cool damp weather, or all of these.
Set unit to Fan Only and the frost will disappear. Setting
the thermostat a little warmer will probably prevent the
frosting from recurring.
Noises
All air conditioners make some noise. We build them to
operate as quietly as possible. An air conditioner mounted
in a wall is quieter than one mounted in a window.
Cleaningyourair conditioner
The decorative front and the cabinet can be cleaned with
warm water and a mild liquid detergent. The indoor coil
can be vacuumed with a dusting attachment if it appears
to be dirty. The outdoor coil can be gently sprayed with a
hose if you can get to it. If not, you might call your dealer
for a more thorough cleaning when needed.