Troubleshooting Information - Daikin RR20AVAK9 Installation & Service Reference

Troubleshooting Information

Complaint
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
Power Failure
Blown Fuse
Loose Connection
Shorted or Broken Wires
Open Overload
Faulty Thermostat
Faulty Transformer
Shorted or Open Capacitor
Internal Compressor Overload Open
Shorted or Grounded Compressor
Compressor Stuck
Faulty Compressor Contactor
Faulty Fan Relay
Open Control Circuit
Low Voltage
Faulty Evaporator Fan Motor
Shorted or Grounded Fan Motor
Improper Cooling Anticipator
Shortage or Refrigerant
Restricted Liquid Line
Undersized Liquid Line
Undersized Suction Line
Not Enough Air across Indoor Coil
Too Much Air across Indoor Coil
Overcharge of Refrigerant
Noncondensibles
Recirculation of Condensing Air
Infiltration of Outdoor Air
Improperly Located Thermostat
Air Flow Unbalanced
System Undersized
Broken Internal Parts
Broken Valves
Inefficient Compressor
High Pressure Control Open
Unbalanced Power, 3PH
Wrong Type Expansion Valve
Expansion Valve Restricted
Oversized Expansion Valve
Undersized Expansion Valve
Expansion Valve Bulb Loose
Inoperative Expansion Valve
Loose Hold-down Bolts
COOLING ANALYSIS CHART
No Cooling
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For detailed service information refer to Remote Condensing Unit service manual.
System Operating
Unsatisfactory Cooling
Pressures
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12
Test Method
Remedy
Test Voltage
Impact Fuse Size & Type
Inspect Connection - Tighten
Test Circuits with Ohmmeter
Test Continuity of Overloads
Test Continuity of Thermostat and Wiring
Check Control Circuit with Voltmeter
Test Capacitor
Test Continuity of Overload
Test Motor Windings
Use Test Cord
Test Continuity of Coil and Contacts
Test Continuity of Coil and Contacts
Test Control Circuit with Voltmeter
Test Voltage
Repair or Replace
· Test Motor Windings
Check Resistance of Anticipator
· Test For Leaks, Add Refrigerant
· Replace Restricted Part
Replace Line
Replace Line
Speed Blower, Check Duct Static Pressure
· Reduce Blower Speed
· · Recover Part of Charge
· Recover Charge, Evacuate, Recharge
· Remove Obstruction to Air Flow
Check Windows, Doors, Vent Fans, Etc.
Relocate Thermostat
Readjust Air Volume Dampers
Refigure Cooling Load
Replace Compressor
Test Compressor Efficiency
· · Test Compressor Efficiency
Reset and Test Control
Test Voltage
Replace Valve
· Replace Valve
· Replace Valve
Replace Valve
· Tighten Bulb Bracket
Check Valve Operation
Tighten Bolts