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Intermittent - No hot water
Natural gas 3 -zone Peerless boiler, with a 41 gallon Amtrol BOILERMATE®
Indirect-Fired Water Heater.
Last year occasionally we would loose hot water in the summer months. My buddy came over and checked things out, and showed me where the relay reset switch was. Once the reset with depressed, the burner came back on and we had hot water again.
It happened again, so I had a plumber come over. He noticed there was a piece of clay flue broken off in the chimney and possibly restricting partial air flow. He removed the broken piece, the chimney was clear of any obstructions. He replaced the reset switch, since it is a thermal bi-metal switch that if reset to many times will be ineffective. Unfortunately, the next day, we lost hot water again. Call him, and he said hit the reset. Reset, burner on, and hot water again. He mentioned other customers was also having issues...???
I also installed a chimney cap in the event creatures don't settle in...
So 1 year has passed without any issue. Now it has occurred again this past month. My buddy checked the chimney which is clean, the burner is clean (which we anticipated since it's natural gas), and the vent damper is working properly.
Here's the caveat:
Appears that the issue Occurs when our weather is hot and high humidity. The weather is back to temperate and everything is working as it should with hot water when called for.
Any thoughts on this would be greatly appreciated...