Midea MGA-D16/SN1 User Manual

R410A Mini Split Chiller 50Hz MCAC-ATSM-2014-01
46
P1: High pressure protection
High pressure protection.
Whether the wiring between the high pressure switch
and main control board is connected well and
correctly.
Whether the high pressure switch is broken.
No
Connect it well.
Validate: Short connect the high pressure switch
socket, check whether the system can run normally.
No
Replace outdoor main board.
No
Check whether the outdoor ambient temperature is
too high.
Yes
Stop the unit.
No
Check whether the outdoor unit is bad ventilation.
Yes
Make the outdoor unit ventilate well.
No
Check whether the heat exchanger is dirty.
Yes
Clean the heat exchanger.
No
Check whether the refrigerant pipe is blocked.
Yes
Drop refrigerant, then use the high pressure
nitrogen or refrigerant to blow pipe,
vacuumize and add the refrigerant again.
LED indicates P1
Yes
Yes
Replace high pressure switch.
Whether the discharge temperature controller gets
faulty.
Yes
Replace discharge temperature controller.
No
Check whether the refrigerant system is ok.

Midea MGA-D16/SN1 Specifications

General

Brand	Midea
Model	MGA-D16/SN1
Category	Air Conditioner
Language	English