Zodiac PF 11M User Manual (English)

Questions and Answers:

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Elizabeth RiceAug 18, 2025
Why does my Zodiac Heat Pump show defrost cycle time exceeded?
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  Catherine BuckleyAug 18, 2025
  A Zodiac Heat Pump might show a 'Defrost cycle time exceeded' error if the defrost cycle lasts too long (over 1 hour). This can happen due to excessive ice formation on the evaporator, caused by low temperatures with a blocked evaporator or poor ventilation during the defrost cycle. It can also be caused by an incorrect ST3 sensor value. To address this, cancel the fault and observe if the defrost cycle operates correctly. If the fault repeats, contact a qualified technician to verify the refrigerant gas level in the appliance.
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Lori MorenoAug 20, 2025
Why does my Zodiac Heat Pump have a refrigerant circuit high pressure fault?
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  Rachel FrenchAug 20, 2025
  A refrigerant circuit high pressure fault in your Zodiac Heat Pump can occur due to several reasons: emulsion of air and water passed in the appliance, bad water flow, a fouled exchanger, or a flow controller jammed shut. To address this, first check the pool hydraulic circuit. Then check the flow rate controller. If the fault persists, it is recommended to contact an approved technician.
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Elizabeth BakerAug 22, 2025
What does it mean when my Zodiac PF 11M Heat Pump says 'Control sensor fault (ST1)'?
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  Jonathan BellAug 22, 2025
  A 'Control sensor fault (ST1)' on your Zodiac Heat Pump indicates that the sensor is either defective or disconnected from terminals 2-3 of the plate B1. To fix this, try replacing or reconnecting the sensor.
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matthew48Aug 25, 2025
What does it mean when my Zodiac PF 11M Heat Pump says 'Antifreeze sensor fault (ST2)'?
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  carl36Aug 26, 2025
  An 'Antifreeze sensor fault (ST2)' message on your Zodiac Heat Pump means the sensor is either defective or disconnected from terminals 1-3 of the plate B1. To resolve this, replace or reconnect the sensor.
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tchavezAug 27, 2025
What does it mean when my Zodiac PF 11M Heat Pump says 'Defrost sensor fault (ST3)'?
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  davidcoleAug 27, 2025
  A 'Defrost sensor fault (ST3)' on your Zodiac Heat Pump indicates that the sensor is either defective or disconnected from terminals 4-6 of the plate B1. You should replace or reconnect the sensor to fix this.
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Michael KennedyAug 30, 2025
What does it mean when my Zodiac PF 11M Heat Pump says 'Water flow- rate sensor fault (ST4)'?
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  Jeffrey RobinsonAug 30, 2025
  A 'Water flow- rate sensor fault (ST4)' message on your Zodiac Heat Pump means the sensor is either defective or disconnected from terminals 4-5 of the plate B1. To fix this, replace or reconnect the sensor.
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Jonathan BoothSep 1, 2025
Why does my Zodiac PF 11M have a refrigerant circuit low pressure fault?
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  leatonSep 1, 2025
  A refrigerant circuit low pressure fault in your Zodiac Heat Pump is caused by insufficient refrigerant. If the fault continues after clearing, contact an approved technician to detect the leak and add more refrigerant.
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Melissa Garcia DDSSep 4, 2025
What causes a 'Defrost cycle time exceeded' error on my Zodiac PF 11M Heat Pump?
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  Christie KingSep 4, 2025
  A 'Defrost cycle time exceeded' error on your Zodiac Heat Pump happens when the defrost cycle takes too long (over 1 hour). This can be due to excessive ice formation on the evaporator (caused by low temperature with evaporator blocked or no ventilation during the defrost cycle), or an incorrect ST3 sensor value. Cancel the fault, then check that the defrost cycle operates correctly. If the fault happens again, contact a technician to check if there is enough refrigerant gas in the appliance.
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Christopher LawrenceSep 6, 2025
What to do if Zodiac Heat Pump shows refrigerant circuit high pressure fault?
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  shane10Sep 6, 2025
  If your Zodiac Heat Pump displays a refrigerant circuit high pressure fault, it could be due to several reasons. First, air and water may have emulsified and entered the appliance. Second, there might be inadequate water flow. Third, the exchanger might be fouled. Lastly, the flow controller could be jammed shut. To resolve this, first check the pool's hydraulic circuit and then inspect the flow rate controller. If the problem continues, it is recommended to contact an approved technician.
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Rebecca StewartSep 9, 2025
How to fix EEPROM fault on Zodiac Heat Pump?
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  Diamond RobbinsSep 9, 2025
  An EEPROM fault on a Zodiac Heat Pump indicates that the parameter data in the controller chips is damaged. To fix this, the regulator needs to be replaced.