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Found Mitsubishi mini split system has 2 indoor heads connected to one outdoor unit. Found bedroom indoor head working perfectly fine and living room head flashing error code 2 on operation light. Called Mitsubishi tech support case number 443788. Found it to be open thermistor error code. They recommended rempalcing indoor thermisters and indoor control board to solve issue. Distributors are closed at this time will call tomorrow to get availability.