Midea MC-SU60-RN1L Service Manual

Aqua Tempo Super II
26 201709
Midea Aqua Tempo Super II
Service Manual
6.8 Air Side Heat Exchanger High Temperature Protection Control
This control protects the air side heat exchanger from high temperature.
Figure 3-6.9: Air side heat exchanger high temperature protection control 1
Note:
1. T3: Air side heat exchanger refrigerant outlet temperature
When the air side heat exchanger refrigerant outlet temperature (T3) rises above 65°C , the system displays P7 protection
and all the units stop running. When the air side heat exchanger refrigerant outlet temperature (T3) drops below 60°C, the
compressor enters re-start control.
Figure 3-6.10: Air side heat exchanger temperature protection control 2
Note:
1. Tz/7: Air side heat exchanger refrigerant total outlet temperature
When the air side heat exchanger refrigerant total outlet temperature (Tz/7) temperature rises at or above 62°C , the
system displays P7 protection and the unit stops running. When the air side heat exchanger refrigerant total outlet
temperature (Tz/7) temperature drops below 62°C, the compressor enters re-start control.
6.9 Water Side Heat Exchanger Temperature Difference Protection Control
This control protects the water side heat exchanger from ice formation.
Figure 3-6.11: Water side heat exchanger temperature difference protection control
Notes:
1. Twi: Water side heat exchanger inlet temperature
2. Two: Water side heat exchanger outlet temperature
When the temperature difference rises at or above 12°C , the system displays P9 protection and all the units stop running.
When the Temperature difference drops below 6°C, the compressor enters re-start control.
T3 > 65°C
T3 < 60°C
Normal operation
High temperature protection, error code P7 is displayed
Tz/7 ≥ 62°C
Tz/7 < 62°C
Normal operation
High temperature protection, error code P7 is displayed
∣Twi-Two∣≥ 12°C
∣Twi-Two∣< 6°C
Normal operation
Temperature difference protection, error code P9 is displayed
When P9 protection occurs 3 times
in 60 minutes, a manual system
restart is required before the system
can resume operation.

Midea MC-SU60-RN1L Specifications

General

Brand	Midea
Model	MC-SU60-RN1L
Category	Chiller
Language	English