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Monticello Ar | How fast does it build head pressure. If it builds head pressure quickly it could be an expansion valve. Ac is just a check list. Low pressure around 30 high pressure 250 to 300 condenser and evaporator clean with plenty of air flow fan working duct work in tact. Then let run and watch high pressure if building quickly like within 5 seconds exPansion valve is stopped up. Just remember if compressor is kicking in and out quickly and repeatedly it's not gonna cool. | |
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Case IH 2188 combine air conditioner not cooling...
