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Weak returns, jets or cleaner, low circulation.

A pool service technician should handle flow and valve work, and licensed specialists should take entrapment devices and surge pits.

Customers put it like this

  • hardly any water coming out of the returns
  • cleaner stopped moving
  • spa jets are weak
  • pump slows down in the afternoon
Prepare this job in ForeBotFind another guide

Stop first if

  • Anyone is in the water while suction cleaning runs with vacuum release suspended.Stop the pump if it can be done without risk. Get everyone out of the water.
  • An equipment room is flooding, or water reaches powered equipment.Stay out of the water. Shut off power only if it can be done without risk. Call a licensed electrician.
  • Someone proposes entering a buried surge tank or pit.Do not enter. Treat it as a confined space and call a trained confined space crew.
01

Ask on the call

6

Homeowner? These are the questions a good technician will ask you. Having the answers ready makes the first visit count.

  1. Did anyone touch a valve or service anything right before this started?
  2. What speed is the pump running, and who set the schedule?
  3. Does it happen at a certain time of day, like hot afternoons?
  4. Is it weak only when the cleaner, jets or a water feature runs?
  5. When were the baskets and filter last cleaned?
  6. Is a heater, booster or solar loop on the same system?
02

Bring

5
  • Suction and discharge gauges
  • Valve position sketch sheet
  • Reference thermometer
  • Flashlight
  • Gloves
03

Check on site

6
  1. Read the pump display for actual speed, drive temperature and event log first.
  2. With the pump off, walk every valve against the selected mode and look for left-in plugs.
  3. Clean the baskets, then compare flow at each return at one known speed.
  4. Switch each cleaner, booster or feature on and off, and log speed and filter pressure.
  5. On a variable speed pump, change one valve at a time and watch for speed rising.
  6. Match low-flow times to heat alerts, and check the fan path with power off.
04

Keep on the record

4
  • Pump speed, program type and event log
  • Sketch of valve positions by mode
  • Filter pressure at a stated speed
  • Run schedule for booster, cleaner and features

General guidance for a qualified person, not a finding about any home. The person on site decides.