Pulsating water will not get hot water from kitchen sink tankless water heater
I have a tankless water heater and in the past month my kitchen sink has been pulsating, so the tankless water heater will not send hot water to the kitchen sink, and only the kitchen sink. It has run fine for 4 years with no problems. Nothing in the house has changed. If I run the dish washer and turn on hot water tap I get hot water, but when dish washer goes off so does the hot water. Need help this is frustrating :(