Midea MC-SU30-RN1L Service Manual

Aqua Tempo Super II
64 201709
Midea Aqua Tempo Super II
Service Manual
Procedure 4.9.4
P0
High pressure switch or discharge
temperature switch connection on main
PCB is loose
1
Yes
Ensure High pressure switch or discharge
temperature switch are connected
properly
No
High pressure switch or discharge
temperature switch have short-circuited
or failed
2
Yes
Replace the high pressure switch or
discharge temperature switch
No
The high pressure side is blocked, caused
by crushed or bent pipe or blocked EXV
3
Yes
Inspect the system and fix the error
No
The heat exchange is poor
4
Yes
Inspect the system and fix the error
No
The water flow rate is not sufficient in
cooling mode
Yes
Inspect the water system and fix the
error
No
Replace outdoor main PCB
Notes:
1. High pressure switch connection is port CN47 on the main PCB (labeled 29 in Figure 4-2.1 in Part 4, 2.2 “Outdoor unit main PCB”).
2. Measure the resistance among the three terminals of the pressure sensor. If the resistance is of the order of mega Ohms or infinite, the pressure sensor
has failed.
3. High pressure side blockage causes discharge temperature to be higher than normal, discharge pressure to be higher than normal and suction pressure to
be lower than normal.
4. In heating mode check water side heat exchanger, water piping, circulator pumps and water flow switch for dirt/blockages. In cooling mode check air side
heat exchanger, fan(s) and air outlets for dirt/blockages.

Midea MC-SU30-RN1L Specifications

General

Brand	Midea
Model	MC-SU30-RN1L
Category	Chiller
Language	English