| One area stays dry |
Clogged nozzle, low pressure, head not popping up, mis-aimed arc |
Roots shallow out, turf thins, weeds creep in |
Clean/replace nozzle, adjust arc, check pressure & head movement |
| Soggy spot or pooling |
Broken head, cracked riser, lateral line leak, valve not closing |
Runoff, fungus risk, wasted water, soil compaction |
Replace head/riser, locate leak, repair line, service valve |
| Spray hits sidewalk/driveway |
Tilted head, wrong nozzle, poor head spacing, arc mis-set |
Direct water waste + hardscape staining/ice risk in cold snaps |
Level head, correct nozzle, adjust arc, consider head upgrade |
| Zone won’t turn on |
Solenoid failure, wiring issue, controller programming, closed valve |
Entire zone dries out quickly in warm weather |
Test solenoid/wiring, verify water supply, reset programming |
| Zone won’t shut off |
Valve debris, worn diaphragm, stuck solenoid |
Major overwatering, plant decline, surprise water bills |
Disassemble/flush valve, replace diaphragm/solenoid |
| Misting/fogging spray |
Pressure too high, wrong nozzle type |
Wind drift + uneven coverage |
Pressure regulation, nozzle selection, matched precipitation check |