Applicable Systems
RA17 Condenser
R96V Furnace
RA14 Condenser
Symptoms
Compressor thermal overload tripped due to high discharge temperature; outdoor unit locked out; no cooling.
Possible Causes
- Dirty condenser coil restricting airflow
- Refrigerant charge low (superheat too high)
- Outdoor fan motor not running at full speed
- Non-condensables in system
Troubleshooting Steps
- Step 1: Check condenser coil cleanliness
Coil clean, airflow adequate - Step 2: Check refrigerant pressures (subcooling/superheat)
Pressures within spec - Step 3: Verify outdoor fan motor operation
Fan runs at full speed - Step 4: Check compressor amperage vs nameplate
Amps within FLA rating - Step 5: Clean coil, adjust charge, replace fan if needed
Compressor runs without overload
How to Reset
Clear by cycling outdoor unit power; may need manual reset on compressor.
Common Replacement Parts
- Rheem Outdoor Fan Motor
- Rheem Capacitor
Frequently Asked Questions
- Q: What is compressor FLA?
Full Load Amperage - rated current draw at maximum load. Compressor amps should be at or below FLA during normal operation. Above FLA indicates overload.
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Source: Rheem RA17 Service Manual
Category: HVAC Residential
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