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Troubleshooting
Page 98
1.1 P6(Low pressure protection/High pressure protection(36k model)/ High temperature
protection of IPM module(<36k models) diagnosis and solution)
Description: When the pressure of system reach a certain value, the low pressure protector will switch off. After the
pressure resume to normal ,the protection code will disappear.
Recommended parts to prepare:
• Wiring mistake
• Pressure protector faulty
• Fan motor faulty
• System problems
• Faulty PCB
• Connection problems
Troubleshooting and repair:
For 12k~24k:
Check the fastening screws on the
PCB and IPM radiator.
Are they
fixed tightly?
Replace the outdoor
control PCB.
Tighten the screws and apply
silicon grease.
NO
YES
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