Rheem HVAC Error Code 17: How to Fix It

Hard 45-90 minutes for DIY diagnostics; additional time if professional repair is needed Medium Severity Verified June 2026
Error Code
17
Brand
Rheem
Product Type
hvac
Severity
Medium
DIY Difficulty
Hard
Estimated Fix Time
45-90 minutes for DIY diagnostics; additional time if professional repair is needed
Rheem HVAC Error Code 17 indicates a compressor over-current condition, meaning the compressor is drawing more electrical current than it should during operation. This can be caused by a failing compressor, low refrigerant levels, a faulty capacitor, dirty coils restricting airflow, or electrical wiring issues. Left unresolved, this error can permanently damage the compressor — one of the most expensive components in your HVAC system — so it is important to diagnose and address it promptly.
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Tools You'll Need

How to Fix Error Code 17

  1. Power Down the System Safely

    NEVER work on HVAC electrical components with power on. High-voltage capacitors can store a lethal charge even after power is removed. If you are unfamiliar with electrical safety, stop here and call a licensed HVAC technician.
  2. Check and Reset the Fault Code

    Do not reset and restart the system more than 2-3 times without identifying the root cause. Repeated hard starts can accelerate compressor failure.
  3. Inspect and Clean the Condenser Coils and Filter

    Do not use a pressure washer on condenser fins — high pressure will bend the delicate aluminum fins and reduce efficiency.
  4. Test the Run Capacitor

    Capacitors store high-voltage electrical charge and can cause serious injury or death if touched without proper discharge. Use a capacitor discharge tool or a resistor rated for the voltage before touching any terminals. If you are not trained in capacitor handling, call a professional.
  5. Check Refrigerant Levels

    Handling refrigerant without EPA certification is illegal and dangerous. Do not attempt to add refrigerant yourself.
  6. Inspect Electrical Wiring and Connections

    If you see signs of burning or melting, do not restore power. This is a fire hazard requiring immediate professional repair.
  7. Measure Compressor Amperage

    Live electrical measurements should only be taken by individuals comfortable with high-voltage safety. Keep meter leads and hands clear of moving parts and live terminals.

Parts You May Need

Contactor relay
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Contactor relay
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Compressor motor
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Contactor relay
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Compressor hard start kit
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Compressor motor
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When to Call a Professional

Call a licensed HVAC technician immediately if: the error returns after a reset and the basic checks (filter, coils) did not resolve it; you find burned wiring, a damaged contactor, or melted components; the capacitor tests as failed; refrigerant is suspected to be low; or the compressor amperage exceeds its rated RLA. Compressor replacement and refrigerant handling both require professional certification and specialized equipment. A failing compressor that is run repeatedly can sustain internal damage that turns a repairable situation into a full compressor or system replacement — do not delay calling a pro if DIY steps do not resolve the issue.

Frequently Asked Questions

What does Rheem Error Code 17 mean?
Rheem Error Code 17 indicates a compressor over-current fault. This means the compressor motor is drawing more electrical current than its rated limit, which can be caused by a weak run capacitor, dirty coils, low refrigerant, failing compressor windings, or electrical wiring problems.
Can I reset Rheem Error Code 17 myself?
You can attempt a reset by turning off the thermostat, switching off the circuit breaker, waiting 5 minutes, and restoring power. However, if the code returns, a simple reset will not fix the underlying problem. Repeated resets without diagnosing the cause can accelerate compressor damage, so it is important to investigate further or call a technician.
How much does it cost to fix Rheem HVAC Error Code 17?
The repair cost depends on the root cause. A capacitor replacement typically costs $150–$400 including labor. A contactor replacement runs $150–$350. If the compressor itself has failed, replacement can cost $1,200–$2,800 or more depending on the unit size and refrigerant type. Refrigerant recharge typically adds $100–$400. Getting a professional diagnosis first will help you understand which repair is actually needed.
Is it safe to run my Rheem HVAC with Error Code 17 showing?
No, it is not safe or advisable to continue running the system when Error Code 17 is active. Operating the compressor in an over-current condition generates excess heat and electrical stress that can permanently damage the compressor windings, void your warranty, and in severe cases create an electrical fire hazard. Shut the system down and diagnose the issue before restarting.
How do I know if my Rheem compressor needs to be replaced?
Signs that the compressor may need replacement include: the system consistently trips Error Code 17 even after the capacitor, coils, and wiring have been checked and corrected; the compressor's measured amperage exceeds its nameplate RLA rating; the compressor hums but does not start; or a technician confirms failed compressor windings using resistance testing. A licensed HVAC technician can perform a definitive compressor diagnosis.