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Error code reference
Heat Controller Air Conditioner Error Code 47
Constant discharge pipe thermistor sensor open/short circuit error.
SourceHeat Controller Multi-Split Air Conditioner - Service Manual: Wall Mounted Systemsp. 74
Diagnostic procedure
The full 47 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Measure resistance unplugged; normal is 200KΩ at 25°C (77°F). Measure voltage plugged; normal is 4.5Vdc at 25°C. If 0V or 5Vdc, sensor is abnormal.
SourceHeat Controller Multi-Split Air Conditioner - Service Manual: Wall Mounted Systemsp. 74
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented
1 manual in the MyPros+ library documents this code for Heat Controller air conditioner.
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