31Probe ErrorThis error message appears if the sensor input signal is outside of the normal range. This usuallyindicates that the sensor has been disconnected or is faulty. It could appear under normal conditions ifthe Cl2, ClO2 or Ozone is outside of the operating range of 0 to 10 ppm, or if the Peracetic Acid isoutside of the normal range of 0 to 100 ppm.Possible Causes Corrective Action1. Controller is faulty; fails self test(see section 5.2) Re-check sensor self test with the sensor cable disconnected.If it still fails, send controller back for repair. If it passes,sensor is faulty.2. Sensor has no power to it. Check +5V, -5V terminals vs COM terminal. Should read+5VDC ±5% and -4.6 VDC ±-5%.3. Sensor is faulty. Indicated if ±5VDC power out of spec w/sensor attached, butin spec without sensor attached. Repair or replace sensor.4. Sensor is faulty. Repair or replace sensor or cable.Refer to sensor instructions.InterlockThis error message indicates that control has been stopped because the dry contact signal from a flowswitch or level switch is now open and one or more control outputs have been programmed tointerlock.Possible Causes Corrective Action1. Flow has stopped, level too low. May be a normal condition, if not, restore flow or level.2. Flow, level switch disconnected. Reconnect.3. Flow, level switch faulty. Verify that switch closes using an ohmmeter. If not, repairor replace.4. Controller faulty. Check the flow switch input by removing the switch wiresand manually shorting the input using a short piece of wire.If the Interlock condition persists, repair the controller. If itgoes away, problem is in the switch or cable.Check Set PointsThis is a normal display if you have changed the type of sensor from one type of sensor to another.The default set points for each choice is different, and will not match what you need for yourapplication. Always select the sensor type before setting the control or auxiliary output set points.8.0 Service PolicyThe WDIS Series Disinfection Controller has a 2-year warranty on electronic components and a 1-year warranty on mechanical parts (keypad, terminal strip and relays).We stock circuit boards for immediate exchange after we have isolated the cause of the problem.Factory authorized repairs that are received by next-day-air will be repaired within 24 hours. Normalpriority for returns is two weeks.Out of warranty repairs or circuit board exchanges are done on a flat fee basis after the warranty isexpired.