Midea V6 Series User Manual

V6 VRF 50Hz
115
Part 6 - Diagnosis and Troubleshooting
2.19 P1: Discharge pipe high pressure protection
Digital display output 2.19.1
Description 2.19.2
 Discharge pipe high pressure protection. If the system has a 3-phase protector and the 3-phase protector is connected
with the high pressure switch, the system will display P1 protection when initially powered on, and P1 protection will
disappear once the system reaches a steady state.
 All units stop running.
 Error code is only displayed on the unit with the error.
Trigger / recover condition 2.19.3
 Trigger condition: Discharge pressure ≥ 4.4MPa.
 Recover condition: Discharge pressure ≤ 3.2MPa.
 Reset method: Resume automatically.
Possible causes 2.19.4
 Outdoor unit stop valves are closed.
 Pressure sensor/switch not connected properly or has malfunctioned.
 Excess refrigerant.
 System contains air or nitrogen.
 High pressure side blockage.
 Poor condenser heat exchange.
 Main PCB damaged.
Procedure 2.19.5
P1
ODU stop valves are closed
Yes
Open the stop valves
No
High pressure sensor connection on main
PCB is loose
1
Yes
Ensure the sensor is connected properly
No
High pressure sensor has short-circuited
or failed
2
Yes
Replace the sensor
No
Flowchart continued on next page …

Midea V6 Series Specifications

General

Brand	Midea
Model	V6 Series
Category	Air Conditioner
Language	English