Friedrich ZONEAIRE SELECT PZE07K3SA, Service & Parts Manual

Page: 24 / 87

24 PB
OPERATION
Digital Control
23
FRP030 FRP030
°F vs. °C Display
The.unit.is.factory. .to.display.all.temperatures.in.degrees.
Fahrenheit.(°.F)..To.switch.to.degrees.Celsius.press.the.‘Fan.Only’.and.
‘Low.Fan’.buttons.simultaneously.for.three.seconds..The.display.will.show.
a.‘C’.as.acknowledgement.of.the.change...To.revert.back.to.°.F.press.the.
‘Fan.Only’.and.‘Low.Fan’.buttons.simultaneously.for.three.seconds..The.
display.will.show.an.‘F’.as.acknowledgement.of.the.change.
Cooling Mode
Pressing.the.‘Cool’.button.while.the.unit.is.in.any.mode,.including.off,.
will.put.the.unit.into.cooling.mode..Adjust.the.temperature.readout.to.the.
desired.room.temperature.and.the.unit.will.cycle.the.compressor.on.and.
off.to.maintain.a.comfortable.room..The.compressor.will.cycle.on.anytime.
that.the.room.temperature.is.1.8°.F.above.the.desired.temperature..The.
fan.operation.is.dependent.on.the.fan.mode.selected,.either.continuous.
or.cycling...See.Fan.Mode.for.fan.cycle.control.
Heating Mode
Pressing.the.‘Heat’.button.while.the.unit.is.in.any.mode,.including.off,.will.
put.the.unit.into.heating.mode.
Heat Pump Models (PZH)
When.the.‘Heat’.button.is.pressed.initially.the.unit.will.energize.the.electric.
resistance.heat.to.quickly.bring.the.room.to.the.set.temperature...When.the.
desired.room.temperature.falls.1.8°.F.below.the.desired.set.temperature.the.
unit.will.cycle.the.compressor.on.and.operate.as.a.heat.pump.to.maintain.
the.room.temperature.while.running.more. .than.resistance.heat.
only.models...If.the.room.temperature.should.fall.more.than.5°.F.from.the.
set.temperature.the.unit.will.run.the.resistance.heater...The.fan.operation.
is.dependent.on.the.fan.mode.selected,.either.continuous.or.cycling..Dip.
switch.3.controls.the.fan.mode,.see.page.23.for.setting...
When.the.outdoor.coil.temperature.falls.below.30°.F.for.more.than.2.min-
utes.the.unit.will.operate.the.resistance.heaters.and.not.the.compressor...
When.the.outdoor.coil.temperature.reaches.45°.F.the.compressor.will.be.
allowed.to.operate.again.
Heat/Cool Models (PZE)
After.pressing.the.‘Heat’.button,.adjust.the.temperature.readout.to.the.
desired.room.temperature.and.the.unit.will.cycle.the.resistance.heat.on.
and.off.to.maintain.a.comfortable.room..The.heater.will.come.on.anytime.
that.the.room.temperature.is.1.8°.F.below.the.desired.temperature..The.
fan.operation.is.dependent.on.the.fan.mode.selected,.either.continuous.
or.cycling..Dip.switch.3.controls.the.fan.mode,.see.page.23.for.setting.
Emergency Heat Operation
In.the.event.of.a.compressor.failure.in.heat.pump.mode.the.compressor.may.
be.locked.out.to.provide.heat.through.the.resistance.heater..This.feature.
ensures.that.even.in.the.unlikely.event.of.a.compressor.failure.the.room.
temperature.can.be.maintained.until.the.compressor.can.be.serviced..Dip.
switch.1.controls.the.emergency.heat.setting,.see.page.23.
Fan Mode
Cycle/Continuous
The.owner.may.choose.between.fan.cycling.or.fan.continuous.mode.based.
on.property.preference.(Note:.Even.heat.monitoring.and.quiet.start/stop.
fan.delay.only.operate.in.fan.cycle.mode)..Fan.continuous.mode.is.used.
to.keep.constant. .circulation.in.the.room.during.all.times.the.unit.is.
‘ON’..Fan.cycle.will.conserve.energy.by.only.operating.the.fan.while.the.
compressor.or.electric.heater.is.operating..Dip.switch.3-4.controls.the.fan.
mode,.see.page.23.for.setting.
Digital Control Operation
Figure 32
Digital Control Panel
High
Med
Low
Fan
Cool
Heat
Fan Speed
Temperature
Power
Pressing.the.fan.mode.button.will.provide.constant.or.cycle.fan.operation.
in.cooling.or.heating.modes.The.fan.speed.selection.is.made.by.pressing.
either.High.or.Low.fan.speed.button.
°F vs °C Display
The unit is factory configured to display all temperatures in
degrees Fahrenheit (° F). To switch to degrees Celsius press
the ‘Fan Only’ and ‘Low Fan’ buttons simultaneously for three
seconds. The display will show a ‘C’ as acknowledgement of the
change . To revert back to ° F press the ‘Fan Only’ and ‘Low Fan’
buttons simultaneously for three seconds. The display will show
an ‘F’ as acknowledgement of the change.
Cooling Mode
Pressing the ‘Cool’ button while the unit is in any mode,
including off, will put the unit into cooling mode. Adjust the
temperature readout to the desired room temperature and
the unit will cycle the compressor on and off to maintain a
comfortable room. The compressor will cycle on anytime that
the room temperature is 18° F above the desired temperature
The fan operation is dependent on the fan mode selected, either
continuous or cycling. See Fan Mode for fan cycle control.
Heating Mode
Pressing the ‘Heat’ button while the unit is in any mode, including
off, will put the unit into heating mode.
Heat Pump Models (PZH)
When the ‘Heat’ button is pressed initially the unit will energize
the electric resistance heat to quickly bring the room to the
set temperature. When the desired room temperature falls
18° F below the desired set temperature the unit will cycle the
compressor on and operate as a heat pump to maintain the room
temperature while running more efficiently than resistance heat
only models If the room temperature should fall more than 5° F
from the set temperature the unit will run the resistance heater
The fan operation is dependent on the fan mode selected, either
continuous or cycling Dip switch 3 controls the fan mode.
When the outdoor coil temperature falls below 30° F for more
than 2 min- utes the unit will operate the resistance heaters and
not the compressor When the outdoor coil temperature reaches
45° F the compressor will be allowed to operate again.
Heat/Cool Models (PZE)
After pressing the ‘Heat’ button, adjust the temperature
readout to the desired room temperature and the unit will cycle
the resistance heat on and off to maintain a comfortable room.
The heater will come on anytime that the room temperature
is 18° F below the desired temperature The fan operation is
dependent on the fan mode selected, either continuous or
cycling Dip switch 3 controls the fan mode, see page 23 for
setting.
Emergency Heat Operation
In the event of a compressor failure in heat pump mode the
compressor may be locked out to provide heat through the
resistance heater. This feature ensures that even in the unlikely
event of a compressor failure the room temperature can be
maintained until the compressor can be serviced Dip switch 1
controls the emergency heat setting.
Fan Mode
Pressing the fan mode button will provide constant or
cycle fan operation in cooling or heating modes The fan
speed selection is made by pressing either High or Low
fan speed button.
Cycle/Continuous
The owner may choose between fan cycling or fan
continuous mode based on property preference (Note:
Even heat monitoring and quiet start/stop fan delay
only operate in fan cycle mode). Fan continuous mode
is used to keep constant airflow circulation in the room
during all times the unit is ‘ON’ Fan cycle will conserve
energy by only operating the fan while the compressor or
electric heater is operating. Dip switch 3-4 controls the
fan mode.