36RLXFZH

Matthew Moore

• 22 de diciembre de 2018 01:55

I have a 36RLXFZH installed with an 18k wall hung and an 18k AHU. It ran great for a few hours and now won't produce heat. The unit comes on and runs great outside, no heat from the AHU or the wall unit. Discharge line is frosting up in the ODU right out of the compressor. It appears that no hot gas is making it to the indoor units. Yet there is no error code and the outdoor unit would run with what seems no stress. I ran the unit in AC mode as well and no cooling. It acts like a service valve or something is not allowing refrigerant to flow. Any ideas?

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  Permanently deleted user

  • 19 de septiembre de 2019 20:28

  Did you find the problem?  Please report.   I have my speculations, with freon charge being the issue, maybe due to leak(s) at flares or improper setting of flare torque wrench.  Or maybe unit was not properly charged from factory.  Pull charge and weigh back in, is a good starting point.  Rule out what you can control, freon charge. Since it is a new installation.  

  But curious if compressor was near max amps, and or backing off every few minutes and then eventually stopping  If service valves were partially closed/blocked, then frosting would be present there first.  Compressor line(s) freezing is indication of lack of freon making it back to compressor to be compressed to a high pressure vapor. Obviously freon temp is way below dew point, which would be if lack thereof.  But regardless not enough info to make a diagnosis, hope someone helped you.

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