Friedrich 920-087-09 (12/10) - Manual (Page 24)

24
FRP030 FRP030
°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.come.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 (PDH)
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.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,.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 (PDE)
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
All.units.are.shipped.with.fan.mode.set.to.continuous.for.cooling.and.cycle.
for.heating.
Fan Only Mode
Pressing.the.‘Fan’.button.will.run.the.fan.to.allow.for.air.circulation.in.the.
room.without.operating.the.compressor.or.heater.regardless.of.the.room.
or.set.temperature..The.fan.speed.selection.is.made.by.pressing.either.
the.‘High.Fan’,.‘Med.Fan’.or.‘Low.Fan’.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,.see.page.23.for.setting.
Digital Control Operation
Figure 32
Digital Control Panel