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920-087-04
Friedrich Digital Control Features
The new Friedrich digital PTAC has state of the art features to improve guest comfort, indoor air quality and conserve energy.
Through the use of specifically designed control software for the PTAC industry Friedrich has accomplished what other Manufactur-
er’s have only attempted – a quiet, dependable, affordable and easy to use PTAC.
Below is a list of standard features on every Friedrich PTAC and their benefit to the owner.
Digital Temperature
Readout
Bydigitally monitoring desiredroomtemperaturetheroomis controlledmore preciselythan conventionalsystems.Thelarge,easy
toread LED displaycan show either set-point oractual room temperature as selectedbyowner.
One-Touch Operation
When the unit is powered off the unit can be returned directly to heating or cooling mode by pressing the ‘Heat’ or ‘Cool’ buttons
withouttheconfusingpowerupsequenceofsomecontrols.One-touchcontroltakesguessworkoutofunitcontroldeliveringamore
enjoyable experience and eliminating front-deskcalls.
Individual Mode and
Fan Control Buttons
By having separate control buttons and indicators for both fan and mode settings the Friedrich digital control eliminates the confu-
sion of previousdigital PTACs.Theaccurate temperaturesetting providesgreater guest comfortthan othersystems.
Quiet Start/Stop
Fan Delay
Thefanstartandstopdelayspreventabruptchangesinroomacousticsduetothecompressorenergizingorstoppingimmediately.
Uponcallforcoolingorheatingtheunitfanwillrunforfivesecondspriortoenergizingthecompressor.Also,thefanoffdelayallows
for “free cooling” by utilizing the already coolindoor coil to its maximum capacitybyrunning for30 seconds afterthe compressor.
Remote Thermostat
Operation
Some applications require the use of a wall mounted thermostat. All new Friedrich PTACs may be switched from unit control to
remote thermostat controleasily withoutthe need to orderaspecial model or accessory kit.
Wireless Remote
Control Ready
Guestscanadjustthetemperature and mode of the unit throughtheuseofan optionalhandheldwireless remote,improvingguest
comfortand relaxation.
Internal Diagnostic
Program
The new Friedrich digital PTAC features a self diagnostic program that can alert maintenance to component failures or operating
problems. The internaldiagnostic program savespropertiesvaluable timewhen diagnosing running problems.
Service Error Code
Storage
The self diagnosis program will also store error codes in memory if certain conditions occur and correct themselves such as ex-
treme high or low operating conditions or activation of the room freeze protection feature. Storing error codes can help properties
determine if the unit faced obscure conditionsor if an erroroccurredandcorrecteditself.
Constant Comfort
Room Monitoring
The on-board processor monitors timebetween demandcycles (heator cool) andwill cycle thefan every 9minutes tosample the
room conditionand determine if the desired conditionsare met. This allows the room to havesimilar benefitsto a remote mounted
stat without the complication orcost of awall mounted thermostat.
Electronic Temperature
Limiting
By limiting the operating range the property can save energy by eliminating “maxcool” or “maxheat”situationscommonwitholder
uncontrolled systems.Thenewelectroniccontrolallowsownerstosetoperatingrangesforbothheatingandcoolingindependently
ofone another.
Room Freeze
Protection
WhenthePTACsensesthattheindoorroomtemperaturehasfallento40°Ftheunitwillcycleonhighfanand theelectricstripheat
to raise the room temperature to 46°F then cycle off again. This feature works regardless of the mode selected and can be turned
off. The control will also store the Room Freeze cycle in the service code memory for retrieval at a later date. This feature ensures
that unoccupied rooms donotreach freezing levelswhere damagecan occur toplumbing and fixtures.
Random Compressor
Restart
Multiple compressors starting at once can often cause electrical overloads and premature unit failure. The random restart delay
eliminates multiple units from starting at once following a power outage or initial power up. The compressor delay will range from
180to240seconds.
Digital Defrost
Thermostat
The new Friedrich PTAC uses a digital thermostat to accurately monitor the outdoor coil conditions to allow the heat pump to run
whenever conditions are correct. Running the PTAC in heat pump mode save energy and reduces operating costs. The digital
thermostat allows maximizationof heat pump run time.
