Service Manual

Troubleshooting by Error Codes SiUS281811E
180 Part 6 Service Diagnosis
U4 - 01 Indoor-outdoor transmission error Refer to the U4 flowchart.
UA - 13
Refrigerant type error The type of refrigerant used for the indoor unit is different from
that used for the outdoor unit.
UA - 15
Not applicable for self-cleaning decoration panel
[when the self-cleaning decoration panel
is mounted]
An outdoor unit is not applicable for the self-cleaning decoration
panel is connected.
UA - 17 Incorrect electric heater capacity setting Refer to page 256.
Error code
Troubleshooting
Description of error Description of diagnosis