Mitsubishi heat pump defrost mode
I just had a Mitsubishi MXZ-4C36NAHZ with a 24kbtu and 9 kbtu unit installed in my house in Vermont. When the temp drops below freezing, my indoor units blow cold air (as in really cold. Not just a fan circulating air, but COLD). This is a quote from the brochure: “and because the system fan turns on only after the target temperature is reached, it NEVER BLOWS COLD AIR.”
1. First if that’s true, what’s happening?
2. I asked the contractor and he said it’s defrost mode. When the temp’s in the 20s, (which is all it’s been here in VT so far) the unit does this cycle every 15-25 minutes. I called Mitsubishi tech support and they said it should do the cycle only every 40-150 minutes and that if it does it more something is wrong. The defrost mode is especially annoying because THERE IS NO FROST ON THE UNIT OUTSIDE.
I am a tolerant person, so I have trouble believing that less tolerant people would be ok with this. Is there something wrong?
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