Friedrich SQ08N10, SQ10N10, SQ05N10, SQ06N10 Electronic Control Sequence of Operation, Cooling Mode

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ELECTRONIC CONTROL SEQUENCE OF OPERATION

Cooling Mode

prior to the compressor. Once the ambient temperature has been lowered to .25 ÛF below the set point, the cooling cycle starts to terminate by shutting off the compressor. After a 30 seconds delay, the fan is shut off.

(See figure below for graphic details)

Electric Heat Operation in Cool with Electric Heat Units

When in the Heat mode, with and without Fan Mode Auto (Fan cycling):

If the indoor ambient temperature is below the Heat Demand Threshold (Heat Set Point minus 1.5 ÛF), turn on electric heat. If Ambient is 0.3 ÛF above the Heat Set Point turn off the electric heat.

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Contents Room Air Conditioners Table Of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Register your air conditioner IntroductionUnit Identification 08 N 1 0 a aSQ05N10-A 115 146 Performance DataElectrical Data Electric Shock HazardFire Hazard Test the power cord Make sure the wiring is adequate for your unitKeep the filter clean Proper installation of chassis seal gasketKuhl Q Control Panel Operation Kühl Control Options Control Panel Operation Instructions ºF ºC Select Timer Schedule ButtonAlerts DIM FunctionWait Icon Control Panel LockTimer or Schedule Options 1 or 2 Selection To Turn On the Timer or Schedule SelectedTimer Settings Timer Start TimeTimer on Scenarios Set theTimer Stop TimeTimer Schedule Control Block Timer OFF ScenariosRemote Control Operation Auto FAN Continuous Electronic Control Sequence of Operation Cooling ModeCompressor Lock Out Time If the user interface does not turn on Components TestingUser Interface Tests Relay Board TestTesting the Relay Board Components Testing CON’TCapacitor Connections Capacitor Check with Capacitor AnalyzerFAN Motor BLOWER/FAN Motor TestTesting the Heating Element Electric Shock Hazard Heating ElementDrain PAN Valve Refrigeration Sequence of Operation Refrigeration system under high pressure 410A Sealed System Repair ConsiderationsRefrigerant Charging 410A Sealed Refrigeration System RepairsRefrigeration Sequence of Operation 410A Sealed Refrigeration System Repairs Method Of Charging / Repairs Burn HazardFreeze Hazard Overcharged Refrigerant Systems Undercharged Refrigerant SystemsRestricted Refrigerant System Compressor Checks Ground Test Single Phase Resistance TestRecommended procedure for compressor replacement High TemperaturesExplosion Hazard Rotary Compressor Special Troubleshooting and Service Available AccessoriesStandard Filter Cleaning / Installation Instructions Routine Maintenance Routine Maintenance Condensation is normal This is a warm weather applianceFrosting NoisesPage See codes chart on next Problem Control Boards Action Error CodesTest Mode Page Page Cooling only Room AIR Conditioners Troubleshooting Tips Cooling only Room AIR Conditioners Troubleshooting Tips Cooling only Room AIR Conditioners Troubleshooting Tips Cooling only Room AIR Conditioners Troubleshooting Tips Heat / Cool only Room AIR Conditioners Troubleshooting Tips Electronic Controls Wiring Diagram THERMISTORS’ Resistance Values Page Page Heat Load Form Following is an example using the heat load formInfiltration Windows & Doors AVG Heating Load Form Friedrich Room Unit Heat PumpsKühl-Q Kühl-Q Units’ 2012 Parts List Kühl Q-Chassis Service Parts List Schedule Table with Energy Saving Values AddendumRoom AIR Conditioners Limited Warranty Technical Support Contact Information Friedrich AIR Conditioning CO