Pentair Pentair UltraTemp Heat Pump Pool Heater E06 Error Fix: Compressor Discharge Temperature

Error code E06 on the Pentair Pentair UltraTemp Heat Pump Pool Heater means: Compressor Discharge Temperature. The compressor discharge temperature has exceeded safe limits. The discharge line leaving the compressor is too hot. Causes include low refrigerant charge (most common — compressor overheats when undercharged), restricted airflow across the evaporator coil, or a failing compressor. Check the evaporator coil for obstructions. Have a technician check the refrigerant charge and compressor health.

The most successful fix is "Replace Stack Flue Sensor and Inspect Flow Components" (medium difficulty, ~60 minutes). Estimated DIY cost: $40-$60. HomeMD has 2 community-ranked fixes for this error.

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Replace Stack Flue Sensor and Inspect Flow Components") is rated medium difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Zip ties.

DIY cost: $40-$60. Professional repair typically costs $250-$350. Many homeowners save money by trying the top-ranked community fix first.

The Pentair Pentair UltraTemp Heat Pump Pool Heater has 8 other known error codes, including: dF (Defrost Mode), E01 (Water Temperature Sensor Fault), E02 (Coil Temperature Sensor Fault), E03 (Ambient Temperature Sensor Fault), E04 (High Pressure Switch Tripped), and 3 more.

Error code E06 also appears on 3 other Pentair models: Pentair IntelliFlo VSF Variable Speed Pool Pump, Pentair IntelliFlo3 VSF Variable Speed Pool Pump, Pentair MasterTemp 400,000 BTU Gas Pool/Spa Heater. The fix may vary by model, so check each model's specific page for tailored repair steps.