Midea MC-SU30-RN1L Service Manual

Aqua Tempo Super II
28 201709
Midea Aqua Tempo Super II
Service Manual
6.11 Water Side Heat Exchanger Low Pressure Protection Control
This control protects the water side heat exchanger from ice formation.
Figure 3-6.14: Water side heat exchanger low pressure protection control in normal cooling mode
Note:
1. Pe: Suction pressure
In normal cooling mode, when the suction pressure drops below 0.6Mpa, the system displays PE protection and all the
units stop running. When the suction pressure is above 0.6Mpa or higher, the compressor enters re-start control. It will not
display the PC error when the suction pressure drops below 0.6Mpa for the first time until the suction pressure drops
below 0.6Mpa for the second time in 30 minutes.
Figure 3-6.15: Water side heat exchanger low pressure protection control in low water outlet cooling mode
Note:
1. Pe: Suction pressure
In low water outlet cooling mode, when the suction pressure drops below 0.4Mpa, the system displays PE protection and
all the units stop running. When the suction pressure is above 0.4Mpa or higher, the compressor enters re-start control. It
will not display the PC error when the suction pressure drops below 0.4Mpa for the first time until the suction pressure
drops below 0.4Mpa for the second time in 30 minutes.
Pe < 0.6Mpa
Pe ˃ 0.6Mpa
Normal operation
Low pressure protection, error code PC is
displayed
Pe < 0.4Mpa
Pe ˃ 0.4Mpa
Normal operation
Low pressure protection, error code PC is
displayed
When system displays PC protection
and a manual system restart is
required before the system can
resume operation.
When system displays PC protection
and a manual system restart is
required before the system can
resume operation.

Midea MC-SU30-RN1L Specifications

General

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