McQuay MAC 120 C - User Manual

Other manuals for McQuay MAC 120 C

Installation And Maintenance52 pages

Questions and Answers

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Ryan BishopAug 17, 2025
What to do if McQuay MAC 120 C Chiller compressor does not start?
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  Stephanie ParkerAug 17, 2025
  If the McQuay Chiller compressor doesn't start, several factors could be at play. First, check the power supply to ensure it's active. Also, inspect the fuses and circuit breakers; replace any blown fuses and reset breakers after fixing the underlying fault. A tripped safety mechanism could also halt the unit; identify the type of safety shutdown, correct the issue, and then restart. Loose wiring is another potential cause; check wire connections and tighten any loose terminal screws. If none of these resolves the issue, the compressor itself may be faulty, and you should contact your local dealer.
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ojohnsonAug 20, 2025
Why is my McQuay MAC 120 C Chiller not cooling enough?
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  Maria WagnerAug 20, 2025
  If your McQuay Chiller isn't providing sufficient cooling, several factors could be responsible. Begin by checking the thermostat setting and reset it to a cooler temperature if it's set too high. Other potential causes, such as a dirty condenser coil, insufficient refrigerant, improper water flow rate, or contaminated water in the system, require contacting your local dealer. Also, make sure that there is no obstacle blocking air inlet or outlet of the unit, and remove it if there is any.
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harperloriAug 23, 2025
What to do if the compressor does not start in McQuay MAC 120 C?
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  elizabeth62Aug 23, 2025
  If the compressor on your McQuay Chiller isn't starting, begin by checking the power supply to ensure it's properly connected. Also, inspect the fuses and circuit breakers; replace any blown fuses and reset breakers after fixing the underlying fault. Other potential issues include defective contactors or coils, which may need repair or replacement, tripped safety devices (determine the cause and correct it before restarting), or loose wiring (check and tighten all connections). If none of these steps resolve the issue, the compressor itself may be faulty, and you should contact a local dealer.
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Amanda OwensAug 26, 2025
How to fix a fan that does not work on McQuay MAC 120 C?
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  Tara MosesAug 26, 2025
  If the fan on your McQuay Chiller isn't working, start by checking the power supply to ensure it's properly connected. If the power supply is fine, the fan motor may be faulty, in which case you should contact a local dealer.
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Angela ClarkAug 28, 2025
What to do if McQuay MAC 120 C shows reverse phase?
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  Ricky JamesAug 28, 2025
  If the McQuay Chiller displays a reverse phase error, switch off the unit immediately and check the 3-phase wiring to ensure it's correctly configured.
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webbkeithAug 31, 2025
What to do if R phase is missing in McQuay Chiller?
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  Jennifer MaloneAug 31, 2025
  If the McQuay Chiller indicates a missing R phase, switch off the unit and inspect the 3-phase wiring to ensure everything is properly connected.
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Danielle HolmesSep 2, 2025
What to do if S phase is missing in McQuay MAC 120 C Chiller?
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  Donna KimSep 3, 2025
  If the McQuay Chiller indicates a missing S phase, switch off the unit and inspect the 3-phase wiring to ensure everything is properly connected.
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Christian PaulSep 5, 2025
What to do if T phase is missing in McQuay MAC 120 C?
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  igregorySep 6, 2025
  If the McQuay Chiller indicates a missing T phase, switch off the unit and inspect the 3-phase wiring to ensure everything is properly connected.
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Devin HarrisSep 8, 2025
What to do if S & T phases are missing in McQuay MAC 120 C Chiller?
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  William RogersSep 8, 2025
  If the McQuay Chiller indicates missing S & T phases, switch off the unit and inspect the 3-phase wiring to ensure everything is properly connected.
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Diane WilsonSep 12, 2025
Why McQuay MAC 120 C Chiller shows Overload+?
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  sgilbertSep 12, 2025
  If the McQuay Chiller is showing an overload error, it may be due to a high discharge temperature. In this case, you should check the refrigerant system.