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Ruud Air Conditioner Troubleshooting
If you're looking for help fixing your Ruud Air Conditioner, look no further! Our comprehensive Ruud Air Conditioner Troubleshooting guide will explain common issues, provide tips, and show you how to read your model's error codes.
Symptom: Unit will not run
Possible Cause:
Power off or loose electrical connection
Thermostat out of calibration-set too high
Defective contactor
Blown fuses
Transformer defective
High pressure control open (if provided)
Interconnecting low voltage wiring damaged
Remedy:
Check for correct voltage at compressor contactor in control box
Reset
Check for 24 volts at contactor coil – replace if contacts are open
Replace fuses
Check wiring-replace transformer
Reset-also see high head pressure remedy-The high pressure control opens at 610 PSIG
Replace thermostat wiring
Symptom: Condenser fan runs, compressor doesn’t
Possible Cause:
Run or start capacitor defective (single phase only)
Start relay defective (single phase only)
Loose connection
Compressor stuck, grounded or open motor winding. open internal overload
Low voltage condition
Low voltage condition
Remedy:
Replace
Replace
Check for correct voltage at compressor – check & tighten all connections
Wait at least 2 hours for overload to reset. If still open, replace the compressor.
At compressor terminals, voltage must be within 10% of rating plate volts when unit is operating.
Add start kit components.
Symptom: Insufficient cooling
Possible Cause:
Improperly sized unit
Improper airflow
Incorrect refrigerant charge
Air, non-condensibles or moisture in system
Incorrect voltage
Remedy:
Recalculate load
Check – should be approximately 400 CFM per ton.
Charge per procedure attached to unit service panel
Recover refrigerant, evacuate & recharge, add filter drier
At compressor terminals, voltage must be within 10% of rating plate volts when unit is operating.
Symptom: Compressor short cycles
Possible Cause:
Incorrect voltage
Defective overload protector
Refrigerant undercharge
Remedy:
At compressor terminals, voltage must be ± 10% of nameplate marking when unit is operating.
Replace – check for correct voltage
Add refrigerant
Symptom: Registers sweat
Possible Cause: Low evaporator airflow
Remedy: Increase speed of blower or reduce restriction – replace air filter
Symptom: High head-low vapor pressures
Possible Cause:
Restriction in liquid line, expansion device or filter drier
Flow check piston size too small
Incorrect capillary tubes
TXV does not open
Remedy:
Remove or replace defective component
Change to correct size piston
Change coil assembly
Replace TXV
Symptom: High head-high or normal vapor pressure – Cooling mode
Possible Cause:
Dirty condenser coil
Refrigerant overcharge
Condenser fan not running
Air or non-condensibles in system
Remedy:
Clean coil
Correct system charge
Repair or replace
Recover refrigerant, evacuate & recharge
Symptom: Low head-high vapor pressures
Possible Cause:
Flow check piston size too large
Defective Compressor valves
Incorrect capillary tubes
Remedy:
Change to correct size piston
Replace compressor
Replace coil assembly
Symptom: Low vapor – cool compressor – iced evaporator coil
Possible Cause:
Low evaporator airflow
Operating below 65°F outdoors
Moisture in system
TXV limiting refrigerant flow
Remedy:
Increase speed of blower or reduce restriction – replace air filter
Add Low Ambient Kit
Recover refrigerant – evacuate & recharge – add filter drier
Replace TXV
Symptom: High vapor pressure
Possible Cause:
Excessive load
Defective compressor
Remedy:
Recheck load calculation
Replace
Symptom: Fluctuating head & vapor pressures
Possible Cause:
TXV hunting
Air or non-condensibles in system
Remedy:
Check TXV bulb clamp – check air distribution on coil – replace TXV
Recover refrigerant, evacuate & recharge
Symptom: Gurgle or pulsing noise at expansion device or liquid line
Possible Cause: Air or non-condensibles in system
Remedy: Recover refrigerant, evacuate & recharge
Related Error Code Pages:
Ruud Air Conditioner Error Codes, Ruud Furnace Error Codes, Ruud Water Heater Error Codes, Ruud Heat Pump Error Codes,
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Ruud Air Conditioner Troubleshooting
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The temperatures can really go high in the summer days. You can’t imagine my frustration when my AC broke last summer. For about 2 weeks we had to go without any air conditioning. I was in a rush to get the problem fixed so I got this Ruud but I didn’t know much about the unit. Finally, the problem was solved but then I wasn’t sure the unit would hold up without breaking down. So far so good, haven’t had to do anything except routine maintenance.
Things are going well so far. I haven’t had any trouble with the Ruud AC I bought. I got it 5 months ago to replace the old one which couldn’t cool the house anymore. Thanks to Ruud and a nice dealer here, I can enjoy the comfort of my home.
We have had the same ac unit for the last 18 years. After such a long time a replacement is usually a better bargain than repairing. So we went ahead and bought this Ruud. I like how quiet it runs. It functions perfectly and does take much to run so the utility bill is low. This is what good manufacturing is all about.
Features that make an air conditioner perform well and last long are in each unit that Ruud makes, no matter the level. Quality matters to Ruud, so every system has optimized access ports for servicing, powder coated paint and rust-resistant screws. They also have an excellent SEER rating, and no unit is below 15.5.
Hurray for Ruud. I’m so happy this turned out great. I was skeptical about replacing my air conditioner because the online reviews gave me the impression that there is nothing really worth the trouble out there. I got this Ruud because a friend of mine reassured me of its excellent services. For 7 months now the unit hasn’t given me any problems. Only had to fix it once and that was covered by the warranty.