Friedrich EQ08N11, SQ10N10, SQ08N10, SQ05N10 manual Components Testing CON’T, Testing the Relay Board

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COMPONENTS TESTING (CON’T)

Testing the Relay Board

		Heat Relay
	Fuse	For Heat & Cool Units
L1	T 3.15AH 250 Volts AC	Goes Here

LN

Fan

High Speed

Fan

Med Speed

Fan

Low Speed

Indoor Coil	Outdoor Coil
Thermistor	Thermistor

Test for 3.3VDC. If incorrect or no voltage, replace electronic relay board. If voltage OK, check thermistor’s resistance value (See page 56).

+-

Test here for 5VDC. If no voltage or wrong voltage, replace relay board.

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Contents Room Air Conditioners Table Of Contents Important Safety Information Your safety and the safety of others are very importantRefrigeration System Hazards Introduction Register your air conditioner08 N 1 0 a a Unit IdentificationPerformance Data SQ05N10-A 115 146Electrical Data Electric Shock HazardFire Hazard Make sure the wiring is adequate for your unit Test the power cordKeep the filter clean Proper installation of chassis seal gasketKuhl Q Control Panel Operation Kühl Control Options Control Panel Operation Instructions Timer Schedule Button ºF ºC SelectDIM Function AlertsWait Icon Control Panel LockTo Turn On the Timer or Schedule Selected Timer or Schedule Options 1 or 2 SelectionTimer Start Time Timer SettingsSet theTimer Stop Time Timer on ScenariosTimer OFF Scenarios Timer Schedule Control BlockRemote Control Operation Auto FAN Continuous Cooling Mode Electronic Control Sequence of OperationCompressor Lock Out Time Components Testing If the user interface does not turn onUser Interface Tests Relay Board TestComponents Testing CON’T Testing the Relay BoardCapacitor Check with Capacitor Analyzer Capacitor ConnectionsFAN Motor BLOWER/FAN Motor TestTesting the Heating Element Electric Shock Hazard Heating ElementDrain PAN Valve Refrigeration Sequence of Operation 410A Sealed System Repair Considerations Refrigeration system under high pressure410A Sealed Refrigeration System Repairs Refrigerant ChargingRefrigeration Sequence of Operation 410A Sealed Refrigeration System Repairs Method Of Charging / Repairs Burn HazardFreeze Hazard Undercharged Refrigerant Systems Overcharged Refrigerant SystemsRestricted Refrigerant System Compressor Checks Single Phase Resistance Test Ground TestRecommended procedure for compressor replacement High TemperaturesExplosion Hazard Available Accessories Rotary Compressor Special Troubleshooting and ServiceStandard Filter Cleaning / Installation Instructions Routine Maintenance Routine Maintenance This is a warm weather appliance Condensation is normalFrosting NoisesPage See codes chart on next Error Codes Problem Control Boards ActionTest 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 Following is an example using the heat load form Heat Load FormHeating Load Form Friedrich Room Unit Heat Pumps Infiltration Windows & Doors AVGKühl-Q Kühl-Q Units’ 2012 Parts List Kühl Q-Chassis Service Parts List Addendum Schedule Table with Energy Saving ValuesRoom AIR Conditioners Limited Warranty Technical Support Contact Information Friedrich AIR Conditioning CO