mundoclima Aerotherm V17 Series, Service Manual

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4.19 P6 Troubleshooting for single-phase models
Digital display output 4.19.1
Description 4.19.2
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Inverter module protection.
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M-Thermal Split stops running.
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Error code P6 is displayed on the user interface. Specific error code L0, L1, L2, L4, L5, L7, L8 or L9 is displayed on the
outdoor unit main PCB.
Possible causes 4.19.3
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Inverter module protection.
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DC bus low or high voltage protection.
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MCE error.
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Zero speed protection.
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Phase sequence error.
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Excessive compressor frequency variation.
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Actual compressor frequency differs from target frequency.
Specific error codes for P6 inverter module protection 4.19.4
If a P6 error code is displayed on the user interface, one of the following specific error codes is displayed on the outdoor
unit main PCB: L0, L1, L2, L4, L5, L7, L8, L9. Refer to Table 4-4.1.
Table 4-4.1: Specific error codes for error P6
Specific error code Content
L0 Inverter module protection
L1 DC bus low voltage protection
L2 DC bus high voltage protection
L4 MCE error
L5 Zero speed protection
L7 Phase sequence error
L8 Compressor frequency variation greater than 15Hz within one second protection
L9 Actual compressor frequency differs from target frequency by more than 15Hz protection
The specific error codes can also be obtained from the LED indicators LED1/LED2 on the inverter module. Refer to Figure
4-4.2 and Figure 4-2.4 or 4-2.6 in Part 4, 2.1 “Outdoor Unit PCBs”.
MUNDOCLIMA AEROTHERM V17 - BIBLOC