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weil/mclain 3 399 goes off on high temp

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Fatrat12
Fatrat12 Member Posts: 1
in Gas Heating
has been going off on high temp often

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  • lchmb
    lchmb Member Posts: 2,997
    edited January 2017
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    Do you mean the ultra 399? series 3? If so, has the unit been serviced, how long has it been in service. Lp or natural gas? Has anyone looked at it? How often? once a day, every cycle? How about a picture of the system... This generally indicates a flow issue...

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