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Navien boiler short cycling
I have a dual fuel Navien NHB-150 connected to an indirect water heater for domestic hot water with an electric boiler running off peak.
When the electric side runs all is normal including DHW. When the propane side kicks on it fires for about a minute or two then kicks off will not push hot water to my three zones for heat but still seems to make DHW.
E271 come up “temperature differential limit”.
I am wondering if some way some how a simple setting got messed up? I was suggested to clean flame sensor but since it’s making DHW does that make sense? I have read through the manual enough to get to menus to see what things are set at but I don’t quite understand the language of setting parameters.
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