Quote from amazon site***Mine also showed H2. I had a suspicion that it was the remote causing it. Changed the remote battery (CR 2032), turned on the heater and let it circulate for 3 minutes, then I went and tested all remote buttons. It worked! No more H2 error code! Amazon Customer · September 11, 2018
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Quote from amazon site***Mine also showed H2. I had a suspicion that it was the remote causing it. Changed the remote battery (CR 2032), turned on the heater and let it circulate for 3 minutes, then I went and tested all remote buttons. It worked! No more H2 error code!
Amazon Customer · September 11, 2018