Noritz NRCB199DV Owner's Manual

Also see for GHQ-C2801WX-FF US: Instructional manual Installation manual

Contents

32Troubleshooting-1Initial OperationUnit does not attempt to ignitewhen water is running.• Check for reversed plumbing or crossed pipes.• Check the water drain valve filter. ( p.29, p.30)Unit attempts to ignite but failsDHW TemperatureDHW is not available when afixture is opened.• Are the gas and water supply valves fully open?• Is the water supply cut off?• Is the hot water fixture/faucet sufficiently open?• Is the gas being cut off by the gas meter?(Can other gas devices such as stoves be used?)• (For LP) Is there enough gas in the tank?(Can other gas devices such as stoves be used?)• Is the water drain valve filter clogged? ( p.29)• Is the power button turned on?• Can the sound of the pump be heard?If not, there may be a malfunction.Contact your installer or a qualified service technician.• Are the gas and water supply valves fully open?• Is the water temperature setting appropriate? ( p.14)• If the water supply temperature is high, it is possible for the temperatureto be higher than the temperature set on the Operation Panel.• If only a small amount of hot water is demanded, it is possible for thetemperature to be higher than the temperature set on the Operation Panel.The water is too hot.• Have you allowed enough time for the cold water in thepipes to drain out?Water takes time to become hot whenturning the hot water fixture/faucet.No DHW is available whena fixture is opened.• Is the water supply cut off?• Is the unit frozen?The DHW is not the correcttemperature.• Is the hot water fixture/faucet sufficiently open?• Reset unit and try again. There may be air in the gas line.• Have a professional check the gas supply pressure.(Continued)• Are the gas and water supply valves fully open?• Is the water temperature setting appropriate? ( p.14)• If the amount of hot water required is very high, it is possiblefor the temperature to be lower than the temperature set onthe Operation Panel.Decrease the amount of hot water passing through the unitand the temperature should stabilize.The DHW is not hot enough.