When a dishwasher spray arms do not rotate, the complaint can involve water supply, circulation, drainage, heating, sealing, sensing, or electronic controls. The correct repair depends on confirming which system is not performing as designed.
What This Dishwasher Symptom May Mean
Possible causes include:
- blocked spray-arm jets or an obstructed arm
- insufficient circulation pressure
- a worn, jammed, or failed circulation pump
- incorrect water level, diverter operation, or control output
Similar symptoms can be produced by different faults. For example, poor washing can come from low water level, low circulation pressure, restricted spray paths, or operating conditions rather than one universal part.
How the Dishwasher Is Diagnosed
Professional diagnosis may include checking:
- free movement and condition of each spray arm
- water level and circulation pressure
- circulation pump and diverter operation
- filter, sump, wiring, and control commands
The appliance should be observed through the relevant fill, wash, drain, heat, or dry stage. Model-specific error codes and test modes are useful only when interpreted with the physical findings.
Information to Prepare Before Service
- the complete model and serial numbers
- the selected cycle and stage where the problem appears
- any error code or flashing-light pattern
- photos or video of leakage, standing water, or unusual operation
- whether plumbing or installation work was done recently
Do not run a leaking dishwasher unattended. Do not bypass the door latch, flood switch, or other safety control.
Repair or Replacement Decision
The practical option depends on the failed system, parts availability, appliance age and condition, labour, previous leaks or repairs, and installation access. Findings and an estimate should be explained before approved work begins.
