mundoclima MUPR-09-H11-E, Руководство по обслуживанию

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TS11-S-INV: Top temperature protection of compressor or High temperature protection of
IPM module or High pressure protection diagnosis and solution
Description: For some models with overload protection, If the sampling voltage is not 5V, the LED will display the failure.
If the temperature of IPM module is higher than a certain value, the LED displays the failure code.
For some models with high pressure switch, outdoor pressure switch cut off the system because high pressure is higher
than 4.4 MPa, the LED displays the failure code.
Recommended parts to prepare:
• Connection wires
• Outdoor PCB
• IPM module board
• High pressure protector
• System blockages
Troubleshooting and repair:
Check if the air flow system
of indoor and outdoor units
are obstructed?
Clear up the air inlet and outlet or the heat
exchanger of indoor and outdoor units.
Yes
No
Yes
Yes
Turn off the power supply and turn
it on 10 minutes later.
Check if the temperature of
compressor Top
Is more than 90 ć˛
No
Check if the refrigerant
system
is normal?
Repair the refrigerant
system .
Replace the outdoor control PCB.
Yes
Check if all the connection, especially
the connection of OLP (Over Load
Protector) sensor is good.
Correct the connection. No
Measure the resistance
between the two ports of
the OLP. Is it zero?
Yes
Replace the OLP. No
Replace the outdoor control PCB. Yes
No
Note: For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric
control box should be replaced as a whole.
Service manual H11 series
e f
Troubleshooting 37