Category Archives: Mrcool

MRCOOL Split AC Error Codes

E1:Actuation of high pressure switch*High pressure switch*Abnormality is detected when the contact of the high pressure switch opens for 3 sec. The system will be shut down. The unit will report this fault. For the first two faults within 30 minutes, the unit can be recovered automatically. If over three times, the unit cannot be recovered automatically.