We just purchased our home in August and it has a 33,000gl indoor underground pool. Up until 4 days ago I haven't had any problems....pretty simple setup and prior owners kept it running and very clean. I wanted to heat the pool up to 80 degrees for company and so I turned heater up, made sure pump was on and didn't check till next day. When I checked temp. the next day it was about 75 degrees so I felt water coming out of jets and there was no water coming out. Timer was turned on to run all the time and pump was running.... but no apparent suction at skimmer and no water coming from jets. I panicked being a new pool owner and shut off the pump and have now spent the last 4 days trying to research and find the problem with no luck yet.
Basic info for pool: one skimmer at side wall with diverter valve and side plate to control flow from main drain and skimmer. 2 jets in shallow end of pool. Centurion 1HP Pump located outside in pump house with heater. Line flow is simple: Line from skimmer runs underground to pump house and then comes out of floor empties into basket, into pump, into STA-rite series 3 300 cartridge filter system, into pool heater, out of pool heater into chlorinator, and then into ground to return jets. There are no shutoff valves on the lines at all. It is continuous flow once it leaves the skimmer.
Here is what I've tried so far. Checked skimmer basket and pump basket for debris, checked pump basket, pump, filter tank, and lines for leaks(none), checked and lubed 0-ring on filter tank and pump basket(seemed fine), cleaned filters they were pretty dirty and look worn-pressure stayed at 20psi which is what it seems to be running at, even took filters out to see if pressure would change it stayed at 20psi. So at this point I'm not sure what to do.....looks like water is coming thru intake line even though skimmer has no suction, the pump basket keeps plenty of water but has a few bubbles at top of lid which has been the norm, pressure is at 20 psi and water is getting into the filter tank. Heater won't run due to low pressure reading so I'm thinking after the filter tank is where the problem is occurring but quite frankly I'm burnt out from so much research. Lastly our temps here in Pa have been really low the last week but the pump was running so it is unlikely that a crack in pipe happened but can't rule it out. Sorry for the long post but I need help and figured as much info. as I could give would get me a fix faster.