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    Navien CH-240 Combustion and Gas Leakage

    My Navien CH-240 has a gas odor smell that I was able to narrow down to the manifold. You can smell gas (tested with a gas detector) when it first starts and then it goes away at high fire (stage 3) and then comes back when it backs down to stage 1. Any thoughts on where to start? The unit is 10...
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    Navien Combi Boiler Error E002 - Where to start?

    Yes, I clean the system annually.
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    Navien Combi Boiler Error E002 - Where to start?

    Thanks to everyone for your input. I have noticed that after the unit turns off, I get the low pressure (E002 code) or a high pressure (E011 code). After 30 minutes they clear by themselves. I also notice when the unit is running on the heating side, water drips from the back side of the heat...
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    Navien Combi Boiler Error E002 - Where to start?

    I have a Navien CH 240 combi boiler set-up that was installed about 10 years ago. On the boiler side it is piped to a coil in my furnace. Recently it started to show code E002 code - low pressure. This occurs on the boiler side and it shuts down the DHW side. I am able to get it to reset by...
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