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Thread: Over Charge
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19-12-2007, 12:29 AM #1
Over Charge
Hope someone can help. I am not an air con engineer but work on the associated controls. I have been called to a job where a Mitsubishi P250YMFC 31.5kw outdoor unit is serving 13 Mitsubishi P25VMLA 3.2kw indoor units several times recently, usually when the night time outdoor temp has been below 0. The error code is 1500 overcharged. The problem has been suggested as a control problem despite testing correctly every time. Would the diversity be suspect in these conditions or has anyone any suggestions.
Thanks
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