27 May '12, 9am

Split system headache: I bought a split system to replace my Addison package unit. The Bosch compressor now resides in

I bought a split system to replace my Addison package unit. The Bosch compressor now resides in my attic while the American Standard air handler sits where the package unit used to. This helps decrease the noise we had to deal with when the package unit came on. The 3.5 ton Addison had a half-horse blower motor, though and the 4 ton split has a one-horse motor. But this new system is experiencing a problem my old unit never had in its 17 years of service. Our rural power line goes off quite often. Last Tuesday it was off for two hours after lunch. By evening the thermostat showed 78, and I could hear the unit running to try to satisfy the 75 degree setting, but the compressor was short-cycling. The dealer who installed it in February sent his tech who found the compressor was cutting out under high head pressure. Diagnosis: the expansion valve was not opening. He did somet...

Full article: http://www.geoexchange.org/forum/maintenance-and-troubles...

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