allencanning
New Member
My Navien NPE-240s-NG has stopped providing hot water, the water that comes out is only lukewarm.
Here is the story. Started leaking water out the condenser pipe like crazy. Had a plumber confirm that the heat exchanger was bad. Bought a new heat exchanger and replaced it. Worked fine for about 2 weeks, then the water was only lukewarm. After reading some forums online, it was suggested that it might be the flow sensor. Replaced that. Still lukewarm. Replace the two mixer valves as well. Still lukewarm. After checking the front panel (B information setting), I can see that the water never goes above 94 degrees. I have descaled the unit for about 30 minutes but that did not help at all. I assume there is a sensor somewhere that needs replacing, but not sure what else there is in this thing that might have failed.
Any idea what other sensor might need replacing?
Here is the story. Started leaking water out the condenser pipe like crazy. Had a plumber confirm that the heat exchanger was bad. Bought a new heat exchanger and replaced it. Worked fine for about 2 weeks, then the water was only lukewarm. After reading some forums online, it was suggested that it might be the flow sensor. Replaced that. Still lukewarm. Replace the two mixer valves as well. Still lukewarm. After checking the front panel (B information setting), I can see that the water never goes above 94 degrees. I have descaled the unit for about 30 minutes but that did not help at all. I assume there is a sensor somewhere that needs replacing, but not sure what else there is in this thing that might have failed.
Any idea what other sensor might need replacing?
