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Haws Troubleshooting Guides

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Symptom Solution Checklist
No cold water and compressor not running
  1. Check voltage received by cooler - is unit plugged in? Is unit plugged into an outlet which is operated by a switch?
  2. Check cold control.
  3. Check wires.
  4. Check relay.
  5. Check overload.
  6. Check compressor.
  7. Check high or low incoming voltage.
No cold water and compressor running
  1. Check condenser to see if it is blocked by dirt/lint.
  2. Check fan motor.
  3. Check for refrigerant leak.
  4. Check for restriction in cap line or strainer.
  5. Check compressor.
Water too cold or frozen
  1. Check cold control adjustment.
  2. Check to see if cold control bulb is installed completely in the thermobulb well, see Thermobulb Well.
Unit runs noisily
  1. Check for vibrations caused by loose fan blade.
  2. Check tubing rattle.
  3. Check compressor.
No hot water
  1. Is switch for thermostat turned off?
  2. Check voltage received by cooler - is unit plugged in?
  3. Check heater limiter.
  4. Check hot tank element.
  5. Check for open wire.
No water flow from bubbler valve
  1. Check to see if bubbler valve is defective or out of adjustment.
  2. Check solenoid valve.
Hot water too hot or boiling over Check hot thermostat control.
Continuous flow in all models EXCEPT EP8WM series
  1. Check solenoid valve.
  2. Check to see if bubbler valve is defective or out of adjustment.
Continuous flow in EP8WM series
  1. Check membrane switch.
  2. Check PC board.
  3. Check solenoid valve.
  4. Check to see if bubbler valve is defective or out of adjustment.

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