M‐Thermal Split
201909 59
4.13
H8 Troubleshooting
Digital display output
Description
Pressure sensor error.
M‐Thermal Split stops running.
Error code is displayed on outdoor unit main PCB and user interface.
Possible causes
Pressure sensor not connected properly or has malfunctioned.
Outdoor unit main PCB is damaged.
Procedure
H8
No
High pressure sensor connection on
outdoor unit main PCB is loose
Yes
Ensure the sensor is connected properly
No
High pressure sensor has short‐circuited
or failed
1
Yes
Replace the sensor
No
Replace outdoor unit main PCB
Notes:
1.
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. The pressure sensor connection on each type of outdoor unit main PCB is labeled in Figure 4‐2.2 in Part4, 2.3 "Main PCBs for Refrigerant System,
Inverter Module".
Midea CAC Confidential
Содержание SMK-60/CGN8
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