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Munchkin 199MLP R1 not heating
While doing research I came across this site and unfortunately due to my research turning up really no results I decided to go ahead and post.
I have a Munchkin unit (see post title) that is suddenly not heating the water (gauge shows ~75) and sounds like it's running or doing something which I never noticed before.
Either way - looking at the controller I don't see an error code but what looks to be a display of "nc" (see attachment). Sadly I'm not sure which product literature I'm to be looking at as this is all new to me and the product has been retired. From what I can tell it either means D5 is not connected or the boiler isn't connected to the bus. Either way, I can assure you that nothing has changed electrically in the house since last night.
I'm pretty handy when it comes to electronics etc (IT Director) but if you believe it's more than just replacing a simple part and requires complete tear down of the system could someone provide a good residential HVAC company in the Attleboro or Seekonk, MA area that would be able to service?